Rock Hill, South Carolina Weather Conditions

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Current Conditions

  • 77°
  • Clear
  • Wind: South 7 mph
  • Humidity: 71%
  • Visibility: 10.0 miles
  • Dew Point: 67°
  • Pressure: 30.12 in. 0

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Next 12 Hours

11  pm
2  am
5  am
8  am
11  am
Partly Cloudy
Partly Cloudy
Clear
Clear
Fog
Fog
Fog
Fog
Partly Cloudy
Partly Cloudy
77°
73°
70°
72°
81°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 72 °
  • Chance of a Thunderstorm
  • Monday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 68 °
  • Chance of a Thunderstorm
  • Tuesday
  • Chance of a Thunderstorm
  • High: 91 °
  • Low: 68 °
  • Chance of a Thunderstorm
  • Wednesday
  • Partly Cloudy
  • High: 90 °
  • Low: 68 °
  • Partly Cloudy
  • Thursday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 66 °
  • Chance of T-Storms

Forecast for Rock Hill, South Carolina

Updated: 11:00 PM EDT on August 30, 2014

  • Sunday

    Overcast in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. Fog early. High of 90F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy. Low of 72F. Winds less than 5 mph.

  • Monday

    Mostly cloudy in the morning, then clear with a chance of a thunderstorm and a chance of rain. High of 90F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 68F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Clear in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 91F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.

  • Wednesday

    Partly cloudy in the morning, then clear. High of 90F. Winds less than 5 mph.

  • Wednesday Night

    Clear with a chance of a thunderstorm and rain in the evening, then partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the SSW at 5 to 10 mph. Chance of rain 50%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and rain in the morning, then clear with a chance of a thunderstorm and rain. High of 88F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday Night

    Clear with a chance of a thunderstorm. Low of 66F. Winds from the South at 5 to 10 mph. Chance of rain 40%.

  • Friday

    Clear with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm. Low of 66F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Saturday

    Clear. High of 86F. Winds from the SW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm. Low of 70F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Sunday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 68F. Winds less than 5 mph. Chance of rain 40%.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 50%.

  • Monday Night

    Partly cloudy. Fog overnight. Low of 68F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday

    Clear with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Clear. Fog overnight. Low of 61F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Winthrop University, Rock Hill, SC

Updated: 12:27 AM EDT

Temperature: 77.9 °F Dew Point: 63 °F Humidity: 61% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Twinoaks Observatory, Rock Hill, SC

Updated: 12:00 AM EDT

Temperature: 74.2 °F Dew Point: 69 °F Humidity: 85% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Walter Elisha Park Area, Fort Mill, SC

Updated: 12:16 AM EDT

Temperature: 75.9 °F Dew Point: 67 °F Humidity: 74% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Derby Downs, York, SC

Updated: 12:23 AM EDT

Temperature: 69.8 °F Dew Point: 67 °F Humidity: 92% Wind: Calm Pressure: 30.05 in Hourly Precipitation: - Heat Index: - Graphs

Location: Bartlett Tree Research Laboratories, Charlotte, NC

Updated: 12:24 AM EDT

Temperature: 76.7 °F Dew Point: 69 °F Humidity: 78% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Van Wyck, SC

Updated: 12:27 AM EDT

Temperature: 76.0 °F Dew Point: 69 °F Humidity: 80% Wind: SSE at 1.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: River Hills Plantation, Lake Wylie, SC

Updated: 12:23 AM EDT

Temperature: 80.2 °F Dew Point: 72 °F Humidity: 75% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: Bridgehampton, Charlotte, NC

Updated: 12:26 AM EDT

Temperature: 76.1 °F Dew Point: 69 °F Humidity: 79% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Hilton Pond Center for Piedmont Natural History, York, SC

Updated: 12:27 AM EDT

Temperature: 73.5 °F Dew Point: 69 °F Humidity: 87% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Firethorne Country Club, Waxhaw, NC

Updated: 12:27 AM EDT

Temperature: 74.2 °F Dew Point: 68 °F Humidity: 81% Wind: Calm Pressure: 29.48 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Cardinal Woods, Pineville, NC

Updated: 12:27 AM EDT

Temperature: 76.9 °F Dew Point: 70 °F Humidity: 79% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Chastain Village, Fort Mill, SC

Updated: 12:16 AM EDT

Temperature: 73.8 °F Dew Point: 69 °F Humidity: 86% Wind: Calm Pressure: 29.89 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: Riverpointe, Charlotte, NC

Updated: 12:24 AM EDT

Temperature: 73.2 °F Dew Point: 68 °F Humidity: 84% Wind: Calm Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Oakbrook, Marvin, NC

Updated: 12:23 AM EDT

Temperature: 70.5 °F Dew Point: 68 °F Humidity: 93% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Walnut Creek, Charlotte, NC

Updated: 12:27 AM EDT

Temperature: 77.9 °F Dew Point: -30 °F Humidity: - Wind: SW at 4.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Hunter Oaks, Waxhaw, NC

Updated: 12:27 AM EDT

Temperature: 77.0 °F Dew Point: 49 °F Humidity: 37% Wind: Calm Pressure: 29.51 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Ballantyne, Charlotte, NC

Updated: 12:27 AM EDT

Temperature: 78.0 °F Dew Point: 71 °F Humidity: 78% Wind: ENE at 3.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Innisfree, Charlotte, NC

Updated: 12:26 AM EDT

Temperature: 77.4 °F Dew Point: 68 °F Humidity: 72% Wind: NE at 1.6 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Inverness at Piper Glen, Charlotte, NC

Updated: 12:21 AM EDT

Temperature: 77.2 °F Dew Point: 66 °F Humidity: 69% Wind: Calm Pressure: 30.02 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Providence Grove, Waxhaw, NC

Updated: 12:27 AM EDT

Temperature: 74.7 °F Dew Point: 69 °F Humidity: 82% Wind: Calm Pressure: 30.07 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Johnson Land & Cattle Co, Richburg, SC

Updated: 12:23 AM EDT

Temperature: 73.9 °F Dew Point: 70 °F Humidity: 86% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: Farmbrook, Waxhaw, NC

Updated: 12:26 AM EDT

Temperature: 71.1 °F Dew Point: 68 °F Humidity: 91% Wind: Calm Pressure: 30.03 in Hourly Precipitation: - Heat Index: - Graphs

Location: Beverly Woods Neighborhood (PWS), Charlotte, NC

Updated: 12:24 AM EDT

Temperature: 78.5 °F Dew Point: 70 °F Humidity: 74% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Yorkmount, Charlotte, NC

Updated: 12:24 AM EDT

Temperature: 80.8 °F Dew Point: 39 °F Humidity: 73% Wind: Calm Pressure: 29.41 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: SoCltColRea, Charlotte, NC

Updated: 12:23 AM EDT

Temperature: 77.2 °F Dew Point: 69 °F Humidity: 75% Wind: Calm Pressure: 30.11 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Roney SouthPark Mountainbrook, Charlotte, NC

Updated: 12:27 AM EDT

Temperature: 74.1 °F Dew Point: 66 °F Humidity: 76% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Providence Springs, Charlotte, NC

Updated: 12:25 AM EDT

Temperature: 77.6 °F Dew Point: 67 °F Humidity: 71% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Madison Park, Charlotte, NC

Updated: 12:27 AM EDT

Temperature: 78.4 °F Dew Point: 70 °F Humidity: 75% Wind: Calm Pressure: 29.42 in Hourly Precipitation: - Heat Index: 81 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Greenville-Spartanburg SC 
1000 PM EDT Sat Aug 30 2014 


Synopsis... 
a Bermuda high will develop and linger into early next week... 
resulting in typical summertime heat and scattered afternoon 
thunderstorms each day. 


&& 


Near term /through Sunday/... 
evening update...made a notable change to the pop/wx/qpf grids 
overnight. The last few runs of the hrrr have been consistent and 
the latest op models have caught onto the idea of a line of 
-shra/thunderstorms and rain organizing across the SW/rn zones around 06z then pushing 
NE through 12z before dissipating. Wont anticipate strong weather with this 
line as it moves underneath strong ridging aloft and instability 
will be weak through a deep layer. Otherwise...a fog threat across 
the mountains and NC fthills will be curtailed with continued broken/overcast 
cloud cover...yet patchy visibilities in the one mile or less range could 
develop across the NC mountain valleys before daybreak as clouds thin 
from the SW after 09z. Min temperatures were bumped up a degree or two most 
locale based on latest trends and anticipated slow cooling rates. 


730 PM EDT update...conv activity has waned across the County warning forecast area with the 
best lift remaining west of the ulvl ridge. The hrrr and NAM both 
have a line of -shra/thunderstorms and rain developing around 06z or so across the SW/rn 
zones and sweeping east through the morning hours. This has been 
picked up by the latest 18z GFS as well. Anyway...this scenario will 
be looked at more closely with the evening update. For the remainder 
of the evening...expect isolate conv activity across the SW/rn NC mountains 
and NE Georgia. The main threat with these storms will be ctg lightning 
with gusty outflows probable as well. 


430 PM EDT update...latest comp radar trends show conv activity 
confined across the western zones of the County warning forecast area. A 4 degree f drop of surface 
dew point/S in the past 3 hours has kept SBCAPE values low east of this area 
while strong 500 mb ridging has nullified mlvl lapse rates. This general 
pattern will change little over the next few hours and the best 850 mb 
moist transport will remain across western Tennessee. Thus...isolate to scattered conv 
will continue west aligned in mech lift and some measure of ulvl 
DPVA...with isolate cells likely developing east across the upstate and 
NC fthills. Not expecting anything strong nor severe through 800 PM 
with echo tops only reaching 35-40 kft associated with fairly weak 
updrafts. 


As of 215 PM...latest cam's showing a little more convective 
response this afternoon so have nudged the probability of precipitation higher over the 
western upstate and the mountains. It still looks like convective 
coverage will increase as the afternoon progresses over NE Georgia and 
the SW mountains...with coverage then spreading NE into the central 
mountains/northern mountains during the evening hours as a weak 
short wave moves through Tennessee. Can't rule out some showers/storms 
affecting the adjacent foothills/Piedmont during the evening so have 
bumped probability of precipitation upward there per latest cams. Have discounted the 
spurious deep convection and heavy quantitative precipitation forecast that the NAM develops in the 
NC Piedmont overnight. Do not see the triggering mechanism for such 
a response and there is no support from any other model. 


In regard to the big picture...the upper high will be gradually 
suppressed to the southeast as a series of short waves move through the Tennessee 
Valley into the Middle-Atlantic States. The first of these short waves 
will move by this evening and then another on Sunday. As the first 
wave moves by to the west tonight...scattered showers and storms will 
occur mainly over the mountains...possibly continuing into the early 
morning hours of Sunday. With moist profiles and weak wind fields... 
severe storms are not expected. However...some locally heavy is 
possible. 


On Sunday...scattered showers and storms are expected to develop again as 
another short wave moves by to the west coinciding with maximum heating. 
The models have been trending away from showing much quantitative precipitation forecast response 
outside the mountains on Sunday. Hence...have dialed back probability of precipitation to the 
slight chance/chance range over the Piedmont. The best coverage 
should be along The Spine of the mountains where numerous storms may 
occur. 


Used our consall blend to populate most fields. Temperatures will continue 
above climatology. Maximum temperatures on Sunday will be close to today's 
numbers...though perhaps a couple degrees less warm in the mountains 
due to more convective coverage. 


&& 


Short term /Sunday night through Tuesday/... 
as of 200 PM Saturday...fairly Standard late Summer weather is 
expected through the short term...as subtropical/Bermuda high 
pressure remains as the dominant synoptic scale feature across the 
southeast. This should generally support warm and humid conditions 
through the period...with chances for diurnal convection generally 
expected to be near to slightly above climatology (30 percent mountains/20 
percent across the lower terrain) Monday and Tuesday afternoons. Convective 
chances may increase slightly across our western areas by Tuesday 
evening...as deep layer moisture increases ahead of a weak frontal 
zone. Temperatures are expected to remain about a category above 
normal through the period. 


&& 


Long term /Tuesday night through Saturday/... 
as of 230 PM EDT Saturday...the latest global models indicate that 
500 mb heights will continue to rise over the forecast area Tuesday night 
into Friday as a broad upper ridging amplifies across the southeast and 
Gulf states. By Sat...weak upper northwesterly flow will set up as the center 
of upper anticyclone retrogrades toward the western Continental U.S.. at the 
surface...high pressure will weaken and slide south of the area Tuesday 
night as a weak cold front approaches from the northwest. The front will 
push through the area on Wednesday and becomes stationary just to our south 
by Thursday. A Bermuda high will then build back in from the southeast by Friday 
and remain in place through day 7. As for our sensible weather...have 
mentioned 30/40 probability of precipitation Wednesday/Thursday due to increasing moisture and buoyancy 
along and ahead of the front. Fri/Sat...diurnal buoyancy and 
moisture under the influence of Bermuda high will be supportive of 
scattered afternoon showers and thunderstorms on each 
day...maintaining probability of precipitation in the 30/40 range. Temperatures will stay 
around 2-5 degrees above normal Wednesday/Thursday before cooling to near 
normal by Friday. 


&& 


Aviation /02z Sunday through Thursday/... 
at kclt...VFR conds through most of the overnight until around 10z or so 
when MVFR visibility may form through 14z. Actual cloud cover will be the 
limiting factor. There is a low chance of a line of -shra or thunderstorms and rain 
reaching the terminal vicinity around 10z...but it will probably 
disipate to the west. Another low chance for conv sun late afternoon 
and will mention with a prob30 at 20z. 


Elsewhere...good cloud cover across the mountains will limit radiational 
cooling at kavl and khky...but MVFR/IFR visibility is not out of the 
question after 08z....will go MVFR for this issuance. A line of 
-shra/thunderstorms and rain could work across the mountains and into the upstate after 08z 
as well and this will be covered with vcsh at all terminals...except 
thunderstorms in the vicinity at kavl through 12z/13z. Conv activity will affect mainly kavl 
and khky Sun afternoon...but all sites have high enough chances to 
warrant a late period prob30 thunderstorms and rain. 


Outlook...generally VFR conditions are expected through early next 
week with the exception for restrictions in the early morning due to 
low clouds and fog...primarily in the mountain valleys. Diurnal 
convection is expected each afternoon with the most coverage over 
the mountains. 


Confidence table... 


02-08z 08-14z 14-20z 20-02z 
kclt high 100% high 83% high 100% high 100% 
kgsp high 100% medium 73% high 96% high 100% 
kavl high 100% high 81% high 100% high 100% 
khky high 100% high 87% high 96% high 100% 
kgmu high 99% high 84% high 96% high 100% 
kand high 100% high 82% high 98% high 100% 


The percentage reflects the number of guidance members agreeing 
with the scheduled taf issuance flight rule category. Complete 
hourly experimental aviation forecast consistency tables and ensemble 
forecasts are available at the following link: (must be lower case) 


Www.Weather.Gov/gsp/aviation_tables 


&& 


Gsp watches/warnings/advisories... 
Georgia...none. 
NC...none. 
SC...none. 


&& 


$$ 
Synopsis...joh 
near term...lg/sbk 
short term...jdl 
long term...joh 
aviation...sbk 












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