Mason Weather in September

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

The climate in Mason during September can be summarized as hot and reasonably dry.

September is in the fall / autumn in Mason and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 31°C (88°F), whilst at night 18°C (64°F) is normal.

Mason weather averages (imperial / metric)
Daytime temperature 31.1°C 88°F
Nightly temperature 17.9°C 64.2°F
Average temperature 24.5°C 76.1°F
Daily sunshine 8.4 hrs
Avg rainfall 77 mm 3 ins
Rainy days 7 days
Sea temperature 28.3°C 82.9°F
Humidity 66%
Windspeed 15.5kph 10 mph

On average September is the 2nd wettest month of the year in Mason with around 77mm 3 inches of rain making it a reasonably dry 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 8.4 hours of sunshine per day.

September temperatures in Mason

Mason average temperature in September

September rainfall

Mason average rain in September

September hourly sunshine

Mason 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 Mason 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

Mason weather stats

Mason weather statistics
Hottest month: July 34.5°C 94.1°F
Driest month: January 31mm 1.2ins
Sunniest month: July 10.8hrs
Coldest month: January 14.3°C 57.7°F
Wettest month: May 89mm 3.5ins
Map showing location of Mason (30.74879, -99.23061) Mason map pin © Google

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