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Weather & Climate
Friday Harbor, Washington, United States
Overview
Available climate summaries for Friday Harbor. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
10.5°C
Summer Avg
16.2°C
Winter Avg
5.4°C
Record High
32.3°C
Record Low
-7.6°C
Annual Precipitation
989.7 mm
Avg Humidity
81%
Summer Humidity
76%
Winter Humidity
85%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 12.8° | 5.4° | -7.5° | 146.6 | 87% | 30 | 46.1 |
| Feb | 13.6° | 5.5° | -5.2° | 83.7 | 83% | 52 | 56.8 |
| Mar | 17.8° | 7.1° | -2.7° | 106 | 82% | 90 | 53 |
| Apr | 23.1° | 9.1° | 2.2° | 70.2 | 80% | 130 | 45.3 |
| May | 28.4° | 12.1° | 3.5° | 51.8 | 79% | 171 | 39.1 |
| Jun | 28.6° | 14.3° | 6.8° | 36.9 | 78% | 180 | 33.4 |
| Jul | 32.3° | 16.9° | 9.7° | 18.3 | 75% | 203 | 30.5 |
| Aug | 29.9° | 17.3° | 9.7° | 27 | 74% | 171 | 36.3 |
| Sep | 27.1° | 15° | 7.6° | 50.4 | 77% | 117 | 42.5 |
| Oct | 20.8° | 10.9° | 1.4° | 108.5 | 83% | 68 | 45.6 |
| Nov | 16.2° | 7.5° | -6.3° | 153.6 | 86% | 34 | 48.8 |
| Dec | 13.8° | 5.2° | -7.6° | 136.7 | 86% | 24 | 64.4 |
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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