Weather & Climate
Washington County, Colorado, United States
Overview
Available climate summaries for Washington County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
11.2°C
Summer Avg
23.9°C
Winter Avg
-0.4°C
Record High
43°C
Record Low
-21.4°C
Annual Precipitation
417.9 mm
Avg Humidity
53%
Summer Humidity
49%
Winter Humidity
59%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 21.5° | -0.5° | -19.4° | 7.4 | 59% | 80 | 58.5 |
| Feb | 25.4° | 0.1° | -21.4° | 10.4 | 58% | 95 | 64.4 |
| Mar | 28.4° | 5.5° | -18.8° | 20.5 | 52% | 147 | 65.6 |
| Apr | 32.9° | 9.9° | -10.7° | 43.8 | 50% | 174 | 67.4 |
| May | 38.1° | 15.3° | -5° | 69.4 | 52% | 206 | 71 |
| Jun | 43° | 22.2° | 3.9° | 63 | 48% | 223 | 60.1 |
| Jul | 42.2° | 25.7° | 10.3° | 65.1 | 48% | 225 | 41.5 |
| Aug | 41.3° | 23.7° | 8.1° | 60.1 | 51% | 202 | 44.8 |
| Sep | 38.7° | 19° | -0.4° | 31.8 | 48% | 162 | 60.2 |
| Oct | 31.7° | 10.5° | -11.9° | 25.4 | 53% | 123 | 59.2 |
| Nov | 26.5° | 4.3° | -17.1° | 11.1 | 55% | 85 | 64 |
| Dec | 19.9° | -0.8° | -20.3° | 9.9 | 60% | 68 | 64 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.