Unlock deeper multi-jurisdiction research
Full sub-pages, saves, and alerts are available on paid plans.
Weather & Climate
Arco, Idaho, United States
Overview
Climate data and monthly weather averages for Arco.
Key Metrics
Annual Avg
7.2°C
Summer Avg
20.9°C
Winter Avg
-6.1°C
Record High
39.3°C
Record Low
-28.7°C
Annual Precipitation
374.8 mm
Avg Humidity
59%
Summer Humidity
38%
Winter Humidity
84%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 11.6° | -7.4° | -28.7° | 36.3 | 88% | 58 | 48.2 |
| Feb | 12.4° | -4.6° | -24.1° | 30 | 80% | 79 | 59.4 |
| Mar | 20° | 1.6° | -17.6° | 39.4 | 68% | 125 | 53.9 |
| Apr | 27.5° | 5.9° | -7.4° | 37.8 | 59% | 161 | 49.7 |
| May | 34.3° | 11.7° | -5.4° | 41.9 | 53% | 201 | 54.6 |
| Jun | 37.6° | 17.3° | -2.2° | 28.2 | 45% | 224 | 48.9 |
| Jul | 39.3° | 23.4° | 4.7° | 13.6 | 35% | 236 | 46.6 |
| Aug | 38.4° | 21.9° | 4° | 17.1 | 33% | 203 | 46.2 |
| Sep | 36° | 15.8° | -2.5° | 24.6 | 39% | 155 | 60.2 |
| Oct | 29.4° | 7.4° | -12.8° | 31.3 | 53% | 109 | 56.4 |
| Nov | 19.3° | -0.1° | -27.9° | 30.3 | 69% | 65 | 51.1 |
| Dec | 9.6° | -6.4° | -28.6° | 44.3 | 84% | 47 | 49.9 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
Subscribe to unlock the full sub-page depth for additional jurisdictions.
You can keep discovering Oyster publicly, but full multi-jurisdiction depth, tracking, alerts, and exports are part of paid access.