Houston Weather in September

What's the weather like in Houston (Missouri) in September 2025?

The climate in Houston during September can be summarized as warm and a little damp.

September is in the fall / autumn in Houston and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 26°C (79°F), whilst at night 14°C (56°F) is normal.

Houston weather averages (imperial / metric)
Daytime temperature 26.1°C 79°F
Nightly temperature 13.5°C 56.3°F
Average temperature 19.8°C 67.6°F
Daily sunshine 8.4 hrs
Avg rainfall 97 mm 3.8 ins
Rainy days 9 days
Sea temperature 21.9°C 71.5°F
Humidity 73%
Windspeed 14kph 9 mph

On average September is the 6th wettest month of the year in Houston with around 97mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.4 hours of sunshine per day.

September temperatures in Houston

Houston average temperature in September

September rainfall

Houston average rain in September

September hourly sunshine

Houston 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 Houston 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

Houston weather stats

Houston weather statistics
Hottest month: July 31.2°C 88.2°F
Driest month: January 53mm 2.1ins
Sunniest month: July 10.9hrs
Coldest month: January 4.5°C 40.1°F
Wettest month: May 122mm 4.8ins
Map showing location of Houston (37.32616, -91.95599) Houston map pin © Google

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