Portland Island Rainfall Forecast

Today 31 May
45%
Mon 1 Jun
5%
Tue 2 Jun
No Rain
Wed 3 Jun
30%
Thu 4 Jun
55%
Fri 5 Jun
35%
Sat 6 Jun
15%

Portland Island Rainfall Statistics

May Rainfall

Juneau, Juneau International Airport (5.6 miles)

Total Rainfall 2026
24.2in
Daily Average 2026
0.2in
Wettest Day 9 January, 2026
1.6in
Wet Days 2026
96/151 (64%)
Total Rainfall April
2.6in
Daily Average April
0.1in
Wettest Day 5 April, 2026
0.4in
Wet Days April
19/31 (61%)
Total Rainfall May
4.8in
Daily Average May
0.2in
Wettest Day 17 May, 2026
0.9in
Wet Days May
19/31 (61%)

Climate (2010–Present)

Juneau, Juneau International Airport (5.6 miles)

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Annual Average 2021–2025
76.8in
Monthly Average 2021–2026
6.3in
Daily Average 2021–2026
0.2in
Wettest Day 21 January, 2022
3.5in

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