Idaho Falls Weather in September
September is one of the perfect months to visit Idaho Falls, with daytime temperatures of 24°C (75°F) and lows of 6°C (43°F) at night. Some rainfall is typical for this time of year.
Rainfall in Idaho Falls in September
Looking at the last 30 years, the data shows about 5 days with rain, averaging 26 mm (1 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Idaho Falls in September
Weather in Idaho Falls is at its perfect in September. Highs reach 24°C (75°F), while nights settle around 6°C (43°F). This kind of day-to-night contrast is typical for this time of year. At 6°C (43°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Idaho Falls's climate page.
Idaho Falls Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
24°C (75°F)
Chance of Rain
17%
Precipitation
26 mm (1 in)
Rainy days
5 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Idaho Falls in September
For Idaho Falls in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers.What To Do in Idaho Falls in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Idaho Falls's climate page.
See the full Idaho Falls climate overview or explore weather in the United States of America.
