Dupree Weather in September

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

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

September is in the fall / autumn in Dupree and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 7°C (45°F) is normal.

Dupree weather averages (imperial / metric)
Daytime temperature 23.4°C 74.1°F
Nightly temperature 7.4°C 45.3°F
Average temperature 15.4°C 59.7°F
Daily sunshine 9.3 hrs
Avg rainfall 31 mm 1.2 ins
Rainy days 7 days
Sea temperature 15.4°C 59.6°F
Humidity 59%
Windspeed 17.3kph 11 mph

On average September is the 6th wettest month of the year in Dupree with around 31mm 1.2 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 9.3 hours of sunshine per day.

September temperatures in Dupree

Dupree average temperature in September

September rainfall

Dupree average rain in September

September hourly sunshine

Dupree 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 Dupree 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

Dupree weather stats

Dupree weather statistics
Hottest month: July 30.5°C 86.9°F
Driest month: January 6mm 0.2ins
Sunniest month: August 11.3hrs
Coldest month: January -2.8°C 27°F
Wettest month: June 81mm 3.2ins
Map showing location of Dupree (45.04748, -101.60099) Dupree map pin © Google

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