Harman US

Thomaston, GA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Thomaston, a city in Upson County, Georgia.

Overnight
71°F
Mostly Clear
Mostly clear, with a low around 71. Wind around 0 mph.

7-day forecast for Thomaston

WhenTempForecastWindPrecip
Overnight 71°F Mostly Clear 0 mph 2%
Saturday 94°F Sunny then Chance Showers And Thunderstorms 0 mph 39%
Saturday Night 70°F Chance Showers And Thunderstorms then Partly Cloudy 0 mph 35%
Sunday 90°F Mostly Sunny 0 mph 14%
Sunday Night 69°F Mostly Clear 0 mph 7%
Monday 91°F Mostly Sunny then Chance Showers And Thunderstorms 0 mph 26%
Monday Night 69°F Chance Showers And Thunderstorms 0 mph 43%
Tuesday 89°F Chance Rain Showers then Chance Showers And Thunderstorms 0 to 5 mph NE 48%
Tuesday Night 69°F Chance Showers And Thunderstorms 5 mph NE 48%
Wednesday 86°F Slight Chance Rain Showers then Chance Showers And Thunderstorms 5 to 10 mph NE 32%
Wednesday Night 66°F Chance Showers And Thunderstorms then Mostly Clear 5 to 10 mph NE 32%
Thursday 83°F Mostly Sunny 5 to 10 mph NE 9%
Thursday Night 63°F Mostly Clear 5 to 10 mph NE 9%
Friday 83°F Mostly Sunny 5 mph N 6%

Forecast source: National Weather Service (api.weather.gov) for Thomaston (32.892, -84.327). Updated through the day.

Growing snapshot for Thomaston

Last spring frost
Mar 23
First fall frost
Nov 12
Growing season
234 days
Hardiness zone
8b

More local growing data for Thomaston: nearby ZIP 30286 weather · frost dates · planting calendar · Georgia frost dates

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Climate data from the nearest NOAA station, Thomaston 4Se, Ga (4.1 mi from Thomaston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.