San Juan Island - Point Joe Rainfall Forecast

Today 8 Sep
No Rain
Wed 9 Sep
No Rain
Thu 10 Sep
No Rain
Fri 11 Sep
30%
Sat 12 Sep
30%
Sun 13 Sep
10%
Mon 14 Sep
5%

San Juan Island - Point Joe Rainfall Statistics

September Rainfall

Friday Harbor Airport (3.7 miles)

Total Rainfall 2026
10.9in
Daily Average 2026
0.04in
Wettest Day 12 January, 2026
0.8in
Wet Days 2026
72/251 (29%)
Total Rainfall August
0.6in
Daily Average August
0.02in
Wettest Day 29 August, 2026
0.4in
Wet Days August
3/31 (10%)
Total Rainfall September
0.1in
Daily Average September
0.01in
Wettest Day 2 September, 2026
0.1in
Wet Days September
1/8 (13%)

Climate (2021–2025)

Friday Harbor Airport (3.7 miles)

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Annual Average 2021–2025
20.6in
Monthly Average 2021–2026
1.8in
Daily Average 2021–2026
0.1in
Wettest Day 15 November, 2021
1.9in

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