Sweetwater Weather in September

What's the weather like in Sweetwater (Texas) in September 2025?

The climate in Sweetwater during September can be summarized as hot and a little damp.

September is in the fall / autumn in Sweetwater and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 30°C (86°F), whilst at night 17°C (63°F) is normal.

Sweetwater weather averages (imperial / metric)
Daytime temperature 29.9°C 85.8°F
Nightly temperature 17.1°C 62.8°F
Average temperature 23.5°C 74.3°F
Daily sunshine 9 hrs
Avg rainfall 81 mm 3.2 ins
Rainy days 7 days
Sea temperature 25.1°C 77.1°F
Humidity 63%
Windspeed 17.3kph 11 mph

On average September is the 2nd wettest month of the year in Sweetwater with around 81mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 9 hours of sunshine per day.

September temperatures in Sweetwater

Sweetwater average temperature in September

September rainfall

Sweetwater average rain in September

September hourly sunshine

Sweetwater average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sweetwater in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Sweetwater weather stats

Sweetwater weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: January 23mm 0.9ins
Sunniest month: July 11.6hrs
Coldest month: January 12.6°C 54.7°F
Wettest month: May 90mm 3.5ins
Map showing location of Sweetwater (32.47095, -100.40594) Sweetwater map pin © Google

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