Unlock deeper multi-jurisdiction research
Full sub-pages, saves, and alerts are available on paid plans.
Weather & Climate
Brown County, South Dakota, United States
Overview
Climate data and monthly weather averages for Brown County.
Key Metrics
Annual Avg
7.5°C
Summer Avg
22.4°C
Winter Avg
-8.2°C
Record High
45°C
Record Low
-40.7°C
Annual Precipitation
593.9 mm
Avg Humidity
69%
Summer Humidity
60%
Winter Humidity
84%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 10° | -9.7° | -40.7° | 12.4 | 86% | 60 | 53.6 |
| Feb | 18.9° | -8° | -36° | 16 | 80% | 84 | 61.8 |
| Mar | 27.7° | 0.1° | -31.1° | 26.7 | 70% | 123 | 61.6 |
| Apr | 31.4° | 7.4° | -14° | 51.9 | 62% | 151 | 62.8 |
| May | 37.3° | 14.3° | -5.1° | 83.4 | 61% | 181 | 54.6 |
| Jun | 41.8° | 20.6° | 5.1° | 100.2 | 63% | 196 | 53.4 |
| Jul | 45° | 24.2° | 7.9° | 79.7 | 58% | 209 | 48 |
| Aug | 42.3° | 22.3° | 7.3° | 69.4 | 59% | 174 | 50.6 |
| Sep | 38.1° | 17.1° | -0.5° | 64.2 | 61% | 130 | 56.5 |
| Oct | 30.6° | 7.8° | -15.5° | 53.3 | 67% | 88 | 62.1 |
| Nov | 22.8° | 0.3° | -20.3° | 16.2 | 74% | 57 | 58.8 |
| Dec | 11° | -6.9° | -30.8° | 20.5 | 85% | 44 | 62.2 |
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.