Flat Rock, South Carolina Weather
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Weather Forecast for Flat Rock, South Carolina : Union County
Issued: 1:33 am EDT Jul 18, 2025 Latitude: 34.8617989 Longitude: -81.5948197 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
20% chance of thunderstorms on Today Mostly Clear on Tonight 30% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 30% chance of thunderstorms on Monday 30% chance of thunderstorms on Tuesday 30% chance of thunderstorms on Wednesday Mostly Sunny on Thursday
High: 95°F Low: 74°F High: 96°F High: 95°F High: 95°F High: 88°F High: 89°F High: 93°F
Low: 75°F Low: 74°F Low: 73°F Low: 70°F Low: 71°F  
Thunderstorms Mostly Clear Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms Mostly Sunny
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Current Conditions at
SHELBY MUNI ARPT - (KEHO)
75°
Mostly Cloudy
as of 4:05 AM EDST
Rel. Humidity: 83%
Dew Point: 70°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Broken at 8000ft
Current Conditions at
ROCK HILL - (KUZA)
75°
Clear
as of 3:54 AM EDST
Rel. Humidity: 94%
Dew Point: 73°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
6 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
GASTONIA - (KAKH)
75°
Clear
as of 3:54 AM EDST
Rel. Humidity: 88%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
GREENVILLE SPARTANBURG - (KGSP)
77°
Mostly Clear
as of 3:53 AM EDST
Rel. Humidity: 73%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
6 MPH
240° Southwest
Cloud Level(s): Few at 9000ft
20% chance of thunderstorms Today Today... A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 95. Heat index values as high as 101. Calm wind becoming southwest around 6 mph in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 74. Calm wind.
30% chance of thunderstorms Saturday Saturday... A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 100. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
30% chance of thunderstorms Saturday Night Saturday Night... A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Calm wind.
30% chance of thunderstorms Sunday Sunday... A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 95. Calm wind becoming west around 5 mph.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 74.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 95.
30% chance of thunderstorms Monday Night Monday Night... A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73.
30% chance of thunderstorms Tuesday Tuesday... A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88.
30% chance of thunderstorms Tuesday Night Tuesday Night... A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.
30% chance of thunderstorms Wednesday Wednesday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 71.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 93.
Current Radar Image


Sun Almanac for Flat Rock, South Carolina
Sunrise: 06:27 AM
Sunset: 8:39 PM
Civil Sunrise:05:58 AM
Civil Sunset: 9:08 PM
Nautical Sunrise: 05:23 AM
Nautical Sunset: 9:43 PM
Astro Sunrise: 04:45 AM
Astro Sunset: 10:21 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.