Britton Weather in September

What's the weather like in Britton (South Dakota) in September 2025?

The climate in Britton during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Britton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 7°C (45°F) is normal.

Britton weather averages (imperial / metric)
Daytime temperature 22.1°C 71.8°F
Nightly temperature 7.3°C 45.1°F
Average temperature 14.7°C 58.5°F
Daily sunshine 8.8 hrs
Avg rainfall 45 mm 1.8 ins
Rainy days 7 days
Sea temperature 15.8°C 60.4°F
Humidity 68%
Windspeed 18.4kph 11 mph

On average September is the 6th wettest month of the year in Britton with around 45mm 1.8 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 8.8 hours of sunshine per day.

September temperatures in Britton

Britton average temperature in September

September rainfall

Britton average rain in September

September hourly sunshine

Britton 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 Britton 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

Britton weather stats

Britton weather statistics
Hottest month: July 29°C 84.2°F
Driest month: December 11mm 0.4ins
Sunniest month: July 12.3hrs
Coldest month: January -7.4°C 18.7°F
Wettest month: June 89mm 3.5ins
Map showing location of Britton (45.79162, -97.75094) Britton map pin © Google

Locations nearby

Top United States locations