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Weather & Climate
Fairfield, Idaho, United States
Overview
Climate data and monthly weather averages for Fairfield.
Key Metrics
Annual Avg
4.7°C
Summer Avg
17.2°C
Winter Avg
-7°C
Record High
35.8°C
Record Low
-30.4°C
Annual Precipitation
548.4 mm
Avg Humidity
65%
Summer Humidity
44%
Winter Humidity
87%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 4.8° | -7.3° | -30.3° | 70.7 | 87% | 61 | 38.2 |
| Feb | 8.2° | -6.4° | -27° | 52.9 | 87% | 81 | 42.1 |
| Mar | 16.1° | -1.9° | -21.9° | 66.3 | 80% | 126 | 45.2 |
| Apr | 23.2° | 2.4° | -14.3° | 47.4 | 70% | 163 | 41.9 |
| May | 29.1° | 8.3° | -9.3° | 45.9 | 62% | 200 | 43.4 |
| Jun | 34.4° | 13.4° | -3.4° | 28.8 | 54% | 225 | 35.6 |
| Jul | 35.8° | 19.7° | 1.6° | 11.2 | 41% | 238 | 31.1 |
| Aug | 34.5° | 18.6° | -0.4° | 12.1 | 38% | 205 | 33.2 |
| Sep | 32.4° | 13.2° | -4.9° | 21.9 | 42% | 154 | 42.8 |
| Oct | 27.5° | 5.3° | -13.1° | 40.6 | 57% | 109 | 43.7 |
| Nov | 17.5° | -1.8° | -30.4° | 57.6 | 74% | 64 | 43.9 |
| Dec | 7.7° | -7.4° | -28° | 93 | 87% | 48 | 37.6 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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