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Weather & Climate
Franklin County, Idaho, United States
Overview
Climate data and monthly weather averages for Franklin County.
Key Metrics
Annual Avg
7.3°C
Summer Avg
20.4°C
Winter Avg
-5.4°C
Record High
38.3°C
Record Low
-30.1°C
Annual Precipitation
551 mm
Avg Humidity
62%
Summer Humidity
44%
Winter Humidity
85%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 11° | -6.3° | -26.3° | 58 | 88% | 60 | 40.3 |
| Feb | 13.8° | -4.2° | -27.4° | 50.7 | 82% | 78 | 44.7 |
| Mar | 22° | 1.7° | -20.3° | 54.6 | 68% | 128 | 47.7 |
| Apr | 26.7° | 5.6° | -9.4° | 61.5 | 61% | 161 | 45.7 |
| May | 32.7° | 11.3° | -6.7° | 58.3 | 55% | 196 | 48.6 |
| Jun | 35.9° | 17.3° | -1.1° | 32.7 | 48% | 225 | 41.4 |
| Jul | 38.3° | 22.8° | 4° | 14.6 | 42% | 236 | 33.8 |
| Aug | 36.8° | 21.2° | 4.3° | 21.7 | 42% | 204 | 33.5 |
| Sep | 32.9° | 15.4° | -3.4° | 39.9 | 47% | 155 | 41.2 |
| Oct | 28.7° | 7.4° | -15.4° | 46.2 | 57% | 106 | 42.6 |
| Nov | 18.6° | 0.4° | -25.2° | 47.4 | 70% | 63 | 42 |
| Dec | 12.6° | -5.7° | -30.1° | 65.4 | 84% | 47 | 42.4 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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