San Juan Island - Roche Harbor Rainfall Forecast

Today 29 Jun
No Rain
Tue 30 Jun
5%
Wed 1 Jul
10%
Thu 2 Jul
20%
Fri 3 Jul
5%
Sat 4 Jul
5%
Sun 5 Jul
No Rain

San Juan Island - Roche Harbor Rainfall Statistics

June Rainfall

Friday Harbor Airport (8.1 miles)

Total Rainfall 2026
9.5in
Daily Average 2026
0.1in
Wettest Day 12 January, 2026
0.8in
Wet Days 2026
63/180 (35%)
Total Rainfall May
0.5in
Daily Average May
0.02in
Wettest Day 25 May, 2026
0.2in
Wet Days May
5/31 (16%)
Total Rainfall June
0.8in
Daily Average June
0.03in
Wettest Day 8 June, 2026
0.4in
Wet Days June
6/29 (21%)

Climate (2021–2025)

Friday Harbor Airport (8.1 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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