Granite Bay State Marine Park Rainfall Forecast

Today 21 May
100%
Thu 22 May
95%
Fri 23 May
20%
Sat 24 May
15%
Sun 25 May
30%
Mon 26 May
60%
Tue 27 May
60%

Granite Bay State Marine Park Rainfall Statistics

May Rainfall

Portage, Portage Glacier (25.5 miles)

Total Rainfall 2025
92.1in
Daily Average 2025
0.7in
Wettest Day 16 April, 2025
6.1in
Wet Days 2025
92/141 (65%)
Total Rainfall April
33.5in
Daily Average April
1.1in
Wettest Day 16 April, 2025
6.1in
Wet Days April
26/30 (87%)
Total Rainfall May
13.3in
Daily Average May
0.7in
Wettest Day 4 May, 2025
3.6in
Wet Days May
11/21 (52%)

Climate (2010–Present)

Portage, Portage Glacier (25.5 miles)

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Annual Average 2020–2024
92.9in
Monthly Average 2020–2025
9.1in
Daily Average 2020–2025
0.3in
Wettest Day 30 October, 2021
10.3in

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