Idaho Falls Weather in October

What's the weather like in Idaho Falls (Idaho) in October 2025?

The climate in Idaho Falls during October can be summarized as cool and dry.

October is in the fall / autumn in Idaho Falls and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night -1°C (31°F) is normal.

Idaho Falls weather averages (imperial / metric)
Daytime temperature 15.7°C 60.3°F
Nightly temperature -0.5°C 31.1°F
Average temperature 7.6°C 45.7°F
Daily sunshine 8.3 hrs
Avg rainfall 21 mm 0.8 ins
Rainy days 6 days
Sea temperature 13.3°C 55.9°F
Humidity 55%
Windspeed 14.4kph 9 mph

On average October is the 4th driest month of the year in Idaho Falls with around 21mm 0.8 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 8.3 hours of sunshine per day.

October temperatures in Idaho Falls

Idaho Falls average temperature in October

October rainfall

Idaho Falls average rain in October

October hourly sunshine

Idaho Falls average rain in October

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 Idaho Falls in October 2025.

Other monthly averages

Best places to visit in October

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Idaho Falls weather stats

Idaho Falls weather statistics
Hottest month: July 29.6°C 85.3°F
Driest month: July 16mm 0.6ins
Sunniest month: July 13hrs
Coldest month: January -3°C 26.6°F
Wettest month: May 35mm 1.4ins
Map showing location of Idaho Falls (43.46658, -112.03414) Idaho Falls map pin © Google

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