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Weather & Climate
New Castle, Colorado, United States
Overview
Available climate summaries for New Castle. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
5.2°C
Summer Avg
17.8°C
Winter Avg
-7°C
Record High
33.7°C
Record Low
-31.8°C
Annual Precipitation
491.5 mm
Avg Humidity
59%
Summer Humidity
43%
Winter Humidity
81%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 9° | -7.6° | -31.8° | 43.1 | 83% | 78 | 34.6 |
| Feb | 11° | -6° | -29.8° | 40 | 79% | 94 | 42.6 |
| Mar | 18.4° | -0.7° | -22.5° | 42.2 | 67% | 151 | 46.6 |
| Apr | 23° | 3.6° | -13.7° | 49.8 | 59% | 171 | 42.8 |
| May | 30.6° | 9.1° | -7.7° | 43.7 | 52% | 200 | 38.3 |
| Jun | 33° | 15.9° | -2.8° | 22.2 | 40% | 232 | 37.7 |
| Jul | 33.7° | 19.6° | 2.9° | 37.2 | 44% | 218 | 28.7 |
| Aug | 32.4° | 17.9° | 1.1° | 37.8 | 45% | 191 | 27.8 |
| Sep | 31.4° | 13.3° | -5° | 44.1 | 46% | 159 | 42.6 |
| Oct | 24.5° | 5.5° | -14.9° | 45.3 | 54% | 119 | 35.8 |
| Nov | 17.6° | -0.9° | -26.2° | 40.2 | 64% | 81 | 37.4 |
| Dec | 9° | -7.3° | -27.9° | 45.9 | 80% | 65 | 35.8 |
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.
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