Idaho Falls (ID)
August
Weather in Idaho Falls, Idaho for August 2025
Your guide to Idaho Falls weather in August - trends and predictions
In general, the average temperature in Idaho Falls at the beginning of August is 36.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.7 °F by the end of August.
With an average of 4 rainy days, Idaho Falls experiences minimal rainfall in August.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
31°/13°
Temperatures
22 km/h
Avg max wind
29 %
Avg humidity
Idaho Falls Weather August
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Temperatures trend during August in Idaho Falls
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August weather in Idaho Falls day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 36° /15° | 0 mm | 9 | |
| Aug. 2 | Sunny | 38° /17° | 0 mm | 9 | |
| Aug. 3 | Sunny | 38° /18° | 0 mm | 9 | |
| Aug. 4 |  Cloudy | 34° /19° | 0 mm | 7 | |
| Aug. 5 |  Partly cloudy | 36° /16° | 0.1 mm | 9 | |
| Aug. 6 | Partly cloudy | 36° /16° | 0 mm | 9 | |
| Aug. 7 | Sunny | 35° /16° | 0 mm | 9 | |
| Aug. 8 |  Overcast | 31° /15° | 0 mm | 7 | |
| Aug. 9 | Cloudy | 33° /14° | 0 mm | 7 | |
| Aug. 10 | Cloudy | 32° /12° | 0 mm | 7 | |
| Aug. 11 | Sunny | 32° /13° | 0 mm | 8 | |
| Aug. 12 |  Patchy rain possible | 31° /18° | 0.3 mm | 7 | |
| Aug. 13 |  Moderate or heavy rain shower | 28° /15° | 4.1 mm | 6 | |
| Aug. 14 |  Heavy rain at times | 26° /13° | 1.2 mm | 6 | |
| Aug. 15 | Overcast | 31° /11° | 0.1 mm | 7 | |
| Aug. 16 | Sunny | 30° /11° | 0 mm | 8 | |
| Aug. 17 | Sunny | 34° /13° | 0 mm | 8 | |
| Aug. 18 | Patchy rain possible | 32° /14° | 0.1 mm | 7 | |
| Aug. 19 | Overcast | 32° /15° | 0 mm | 7 | |
| Aug. 20 | Overcast | 33° /14° | 0 mm | 7 | |
| Aug. 21 | Sunny | 29° /14° | 0 mm | 7 | |
| Aug. 22 | Partly cloudy | 32° /12° | 0 mm | 8 | |
| Aug. 23 | Patchy rain possible | 30° /15° | 0.8 mm | 7 | |
| Aug. 24 | Overcast | 27° /11° | 0 mm | 6 | |
| Aug. 25 | Cloudy | 22° /8° | 0 mm | 5 | |
| Aug. 26 | Sunny | 24° /8° | 0 mm | 6 | |
| Aug. 27 | Sunny | 29° /9° | 0 mm | 7 | |
| Aug. 28 | Sunny | 24° /13° | 0 mm | 6 | |
| Aug. 29 | Sunny | 26° /7° | 0 mm | 7 | |
| Aug. 30 | Sunny | 30° /8° | 0 mm | 8 | |
| Aug. 31 | Sunny | 32° /12° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Idaho Falls in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Idaho Falls forecast closer to your planned date for the most up-to-date weather information.
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Idaho Falls in August - FAQ
What are the expected maximum and minimum temperatures in Idaho Falls during August?
Expect warm days with temperatures around 31°, cooling to mild conditions of 13° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Idaho Falls during August?
Rainfall in Idaho Falls during August is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 4 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Idaho Falls during August?
The average wind speed in Idaho Falls during August is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Idaho Falls
Explore the daily rainfall trends and prepare for Idaho Fallss August weather 💧
UV exposure in Idaho Falls during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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