National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Thomaston, Thomaston-Upson County Airport (KOPN)

Lat: 32.96°NLon: 84.26°WElev: 797ft.

Overcast

46°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Last update 23 Jan 5:35 am EST
Extended Forecast for

4 Miles SW Williamson GA

  • Overnight

    Overnight: A 30 percent chance of showers. Cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 10am. Cloudy, with a high near 53. North wind around 5 mph.

    High: 53 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Cloudy, with a low around 39. North wind around 5 mph.

    Low: 39 °F

    Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after 1pm. Cloudy, with a high near 45. East wind around 10 mph, with gusts as high as 20 mph.

    High: 45 °F

    Cloudy then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 34. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 34 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 4pm. High near 50. Chance of precipitation is 100%.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers. Cloudy, with a low around 44. Calm wind.
Friday
A 30 percent chance of showers, mainly before 10am. Cloudy, with a high near 53. North wind around 5 mph.
Friday Night
Cloudy, with a low around 39. North wind around 5 mph.
Saturday
A 40 percent chance of showers after 1pm. Cloudy, with a high near 45. East wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Showers. Low around 34. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Sunday
Showers, with thunderstorms also possible after 4pm. High near 50. Chance of precipitation is 100%.
Sunday Night
Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Sunny, with a high near 41.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Williamson GA
 33.14°N 84.41°W (Elev. 810 ft)
Last Update:
1:41 am EST Jan 23, 2026
Forecast Valid:
5am EST Jan 23, 2026-6pm EST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation