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Weather & Climate
Thief River Falls, Minnesota, United States
Overview
Climate data and monthly weather averages for Thief River Falls.
Key Metrics
Annual Avg
4.8°C
Summer Avg
20.2°C
Winter Avg
-12.4°C
Record High
40.1°C
Record Low
-45.4°C
Annual Precipitation
578.1 mm
Avg Humidity
74%
Summer Humidity
65%
Winter Humidity
90%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 5.3° | -14.4° | -45.4° | 14 | 92% | 51 | 58 |
| Feb | 9.8° | -12.5° | -37.3° | 14.3 | 90% | 82 | 61.7 |
| Mar | 26.2° | -3° | -37.4° | 27 | 77% | 125 | 63.3 |
| Apr | 29.8° | 5.5° | -16.1° | 38.1 | 65% | 145 | 55 |
| May | 32.8° | 12.6° | -5.3° | 78.4 | 65% | 173 | 55.7 |
| Jun | 35.1° | 18.5° | 1.5° | 103.8 | 68% | 180 | 53.7 |
| Jul | 40.1° | 21.8° | 5.7° | 73.8 | 64% | 197 | 52.5 |
| Aug | 38.7° | 20.3° | 1.9° | 66.6 | 63% | 163 | 51.5 |
| Sep | 35.7° | 14.9° | -3.1° | 67.2 | 67% | 115 | 52.9 |
| Oct | 29.9° | 5.9° | -10.7° | 55.2 | 73% | 73 | 57.2 |
| Nov | 21° | -2° | -22.7° | 18.3 | 79% | 42 | 57.8 |
| Dec | 7° | -10.4° | -38.4° | 21.4 | 89% | 33 | 55.4 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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