Wallace Weather in September

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

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

September is in the fall / autumn in Wallace and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 20°C (69°F), whilst at night 2°C (36°F) is normal.

Wallace weather averages (imperial / metric)
Daytime temperature 20.3°C 68.5°F
Nightly temperature 2.3°C 36.1°F
Average temperature 11.3°C 52.3°F
Daily sunshine 9.2 hrs
Avg rainfall 46 mm 1.8 ins
Rainy days 8 days
Sea temperature 13°C 55.4°F
Humidity 59%
Windspeed 11.9kph 7 mph

On average September is the 3rd driest month of the year in Wallace with around 46mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.2 hours of sunshine per day.

September temperatures in Wallace

Wallace average temperature in September

September rainfall

Wallace average rain in September

September hourly sunshine

Wallace 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 Wallace 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

Wallace weather stats

Wallace weather statistics
Hottest month: July 25.7°C 78.3°F
Driest month: July 28mm 1.1ins
Sunniest month: July 13.3hrs
Coldest month: January -1.1°C 30°F
Wettest month: January 124mm 4.9ins
Map showing location of Wallace (47.47409, -115.92794) Wallace map pin © Google

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