James Island State Park Rainfall Forecast

Today 18 Apr
5%
Sun 19 Apr
5%
Mon 20 Apr
5%
Tue 21 Apr
30%
Wed 22 Apr
30%
Thu 23 Apr
5%
Fri 24 Apr
No Rain

James Island State Park Rainfall Statistics

April Rainfall

Friday Harbor Airport (11.2 miles)

Total Rainfall 2026
8.1in
Daily Average 2026
0.1in
Wettest Day 12 January, 2026
0.8in
Wet Days 2026
50/108 (46%)
Total Rainfall March
3.5in
Daily Average March
0.1in
Wettest Day 4 March, 2026
0.6in
Wet Days March
19/31 (61%)
Total Rainfall April
0.4in
Daily Average April
0.03in
Wettest Day 1 April, 2026
0.3in
Wet Days April
5/18 (28%)

Climate (2010–Present)

Friday Harbor Airport (11.2 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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