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Weather & Climate
Sierra County, California, United States
Overview
Available climate summaries for Sierra County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
9.2°C
Summer Avg
19.5°C
Winter Avg
0.4°C
Record High
38.8°C
Record Low
-18.1°C
Annual Precipitation
1002 mm
Avg Humidity
61%
Summer Humidity
37%
Winter Humidity
81%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.7° | 0.3° | -17.6° | 145.7 | 82% | 73 | 35.7 |
| Feb | 19.6° | 0.9° | -15.6° | 160.2 | 81% | 89 | 27.3 |
| Mar | 20.9° | 3.2° | -13.8° | 157.8 | 80% | 136 | 28.3 |
| Apr | 24.3° | 5.8° | -10.5° | 84.9 | 75% | 174 | 30 |
| May | 31.5° | 10.6° | -4.3° | 49.6 | 66% | 219 | 23 |
| Jun | 36.4° | 16.1° | -2.7° | 14.4 | 50% | 249 | 20.5 |
| Jul | 38.8° | 21.6° | 4° | 3.4 | 33% | 257 | 19.6 |
| Aug | 37.5° | 20.7° | 3.3° | 4.3 | 29% | 230 | 18.8 |
| Sep | 36.5° | 16.8° | -2.8° | 10.8 | 35% | 178 | 24.4 |
| Oct | 32.1° | 10.4° | -6.3° | 57.4 | 49% | 131 | 26.9 |
| Nov | 24.9° | 4.1° | -18.1° | 109.5 | 68% | 81 | 26.8 |
| Dec | 16.6° | 0° | -18° | 204 | 81% | 61 | 31.7 |
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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