Rigby Weather in September

What's the weather like in Rigby (Idaho) in September 2025?

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

September is in the fall / autumn in Rigby and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 4°C (40°F) is normal.

Rigby weather averages (imperial / metric)
Daytime temperature 22.2°C 71.9°F
Nightly temperature 4.3°C 39.7°F
Average temperature 13.2°C 55.8°F
Daily sunshine 10.2 hrs
Avg rainfall 23 mm 0.9 ins
Rainy days 6 days
Sea temperature 15.2°C 59.4°F
Humidity 49%
Windspeed 14.4kph 9 mph

On average September is the 5th driest month of the year in Rigby with around 23mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.2 hours of sunshine per day.

September temperatures in Rigby

Rigby average temperature in September

September rainfall

Rigby average rain in September

September hourly sunshine

Rigby 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 Rigby 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

Rigby weather stats

Rigby weather statistics
Hottest month: July 28.7°C 83.7°F
Driest month: July 17mm 0.7ins
Sunniest month: July 13hrs
Coldest month: January -3°C 26.6°F
Wettest month: June 40mm 1.6ins
Map showing location of Rigby (43.67241, -111.91497) Rigby map pin © Google

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