Idaho Falls Climate: Weather by Month and Best Time to Visit
Best months for Idaho Falls: September, June, August, July.
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 |