Idaho Falls in August
8.2out of 10
Yes, a good time to go
Hot: daytime highs around 30°C. Some rain: about 4 rainy days.
30°CAvg high
13°CAvg low
4Rainy days (14 mm)
13:48 hDaylight
06:38Sunrise · 20:26 Sunset
Why this score
- Hot: daytime highs around 30°C
- Some rain: about 4 rainy days
What to wear and pack
- Light, breathable clothing
- A light jacket for cooler evenings
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rainfall in August is fairly consistent from year to year (2.8 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 0°C | -8°C | 36 mm | 10 | – | – | 3.8 |
| February | 3°C | -6°C | 28 mm | 8 | – | – | 4.4 |
| March | 9°C | -2°C | 36 mm | 9 | – | – | 5.6 |
| April | 14°C | 2°C | 45 mm | 11 | – | – | 6.3 |
| May | 20°C | 6°C | 53 mm | 10 | – | – | 7.4 |
| June | 26°C | 10°C | 31 mm | 6 | – | – | 8.3 |
| July | 31°C | 14°C | 12 mm | 4 | – | – | 8.0 |
| August | 30°C | 13°C | 14 mm | 4 | – | – | 8.2 |
| September | 24°C | 8°C | 24 mm | 4 | – | – | 8.5 |
| October | 16°C | 3°C | 33 mm | 6 | – | – | 7.2 |
| November | 6°C | -3°C | 30 mm | 8 | – | – | 5.2 |
| December | 0°C | -8°C | 38 mm | 9 | – | – | 3.8 |
Frequently asked questions
How hot is Idaho Falls in August?
Daytime highs average 30°C and nights about 13°C.
When is the best time to visit Idaho Falls?
The best months are September, June, August, July.