Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Idaho Falls Weather in September
September is one of the excellent 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 excellent 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.
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
Idaho Falls Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Idaho Falls - and find the best time to visit.
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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
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Cycling10/10 -
Walking10/10 -
Camping5/10 -
Outdoor sports10/10
Idaho Falls 3-Day Forecast
More climate data for Idaho Falls
See the full Idaho Falls climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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