Brown Island Rainfall Forecast
- No Rain
- No Rain
- No Rain
- 15%
- 45%
- 50%
- 40%
Brown Island Rainfall Statistics
December Rainfall
Friday Harbor Airport (1.2 miles)
Total Rainfall December
6.5inDaily Average December
0.3inWettest Day 10 December, 2025
1.8inWet Days December
20/27 (74%)
Climate (2010–Present)
Friday Harbor Airport (1.2 miles)
Annual Average 2020–2024
20.9inMonthly Average 2020–2025
1.7inDaily Average 2020–2025
0.1inWettest Day 15 November, 2021
1.9in