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United States weather

Weather in Idaho Falls, Idaho for August 2026

Your guide to Idaho Falls weather in August - trends and predictions

    Temperatures

  • In general, the average temperature in Idaho Falls at the beginning of August is 33.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.1 °F by the end of August.

    • Rain 🌧️

  • With an average of 2 rainy days, Idaho Falls experiences minimal rainfall in August.

    • More

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Average dry days
29
Dry days
Average rainy days
2
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/13°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
28 %
Avg humidity

Idaho Falls Weather August

Move between months or click on a day
July
September
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
34°
2
Sunny
35°
3
Sunny
34°
4
Cloudy
32°
5
Partly cloudy
32°
6
Partly cloudy
35°
7
Sunny
31°
8
Overcast
29°
9
Cloudy
29°
10
Cloudy
31°
11
Sunny
32°
12
Patchy rain possible
33°
13
Moderate or heavy rain shower
32°
14
Heavy rain at times
30°
15
Overcast
32°
16
Sunny
32°
17
Sunny
31°
18
Patchy rain possible
33°
19
Overcast
34°
20
Overcast
33°
21
Sunny
31°
22
Partly cloudy
33°
23
Patchy rain possible
32°
24
Overcast
30°
25
Cloudy
27°
26
Sunny
26°
27
Sunny
25°
28
Sunny
25°
29
Sunny
27°
30
Sunny
29°
31
Sunny
31°

Temperatures trend during August in Idaho Falls

See the weather trend as well as the moving average line

August weather in Idaho Falls day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
 34° /12° 0 mm 9
Aug. 2 Sunny
Sunny
 35° /13° 0 mm 9
Aug. 3 Sunny
Sunny
 34° /13° 0 mm 8
Aug. 4 Cloudy
Cloudy
 32° /15° 0 mm 8
Aug. 5 Partly cloudy
Partly cloudy
 32° /12° 0.1 mm 8
Aug. 6 Partly cloudy
Partly cloudy
 35° /12° 0 mm 9
Aug. 7 Sunny
Sunny
 31° /13° 0 mm 8
Aug. 8 Overcast
Overcast
 29° /12° 0 mm 7
Aug. 9 Cloudy
Cloudy
 29° /9° 0 mm 7
Aug. 10 Cloudy
Cloudy
 31° /9° 0 mm 7
Aug. 11 Sunny
Sunny
 32° /12° 0 mm 8
Aug. 12 Patchy rain possible
Patchy rain possible
 33° /14° 0.2 mm 8
Aug. 13 Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /13° 2 mm 8
Aug. 14 Heavy rain at times
Heavy rain at times
 30° /12° 0.6 mm 7
Aug. 15 Overcast
Overcast
 32° /11° 0.1 mm 8
Aug. 16 Sunny
Sunny
 32° /11° 0 mm 8
Aug. 17 Sunny
Sunny
 31° /12° 0 mm 7
Aug. 18 Patchy rain possible
Patchy rain possible
 33° /11° 0.1 mm 8
Aug. 19 Overcast
Overcast
 34° /10° 0 mm 8
Aug. 20 Overcast
Overcast
 33° /14° 0 mm 7
Aug. 21 Sunny
Sunny
 31° /13° 0 mm 8
Aug. 22 Partly cloudy
Partly cloudy
 33° /11° 0 mm 8
Aug. 23 Patchy rain possible
Patchy rain possible
 32° /10° 0.4 mm 7
Aug. 24 Overcast
Overcast
 30° /11° 0 mm 7
Aug. 25 Cloudy
Cloudy
 27° /9° 0 mm 6
Aug. 26 Sunny
Sunny
 26° /10° 2.5 mm 6
Aug. 27 Sunny
Sunny
 25° /12° 30.2 mm 6
Aug. 28 Sunny
Sunny
 25° /14° 0 mm 6
Aug. 29 Sunny
Sunny
 27° /7° 0 mm 7
Aug. 30 Sunny
Sunny
 29° /8° 0 mm 8
Aug. 31 Sunny
Sunny
 31° /10° 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 2 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 ☀️

Quick links

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Location coordinates Where is Idaho Falls?

Get accurate weather forecasts for Idaho Falls, located at latitude 43.467 and longitude -112.034. Stay updated with localized weather information tailored for Idaho Falls.

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