Sister Island Rainfall Forecast

Today 18 Jun
100%
Fri 19 Jun
30%
Sat 20 Jun
20%
Sun 21 Jun
40%
Mon 22 Jun
50%
Tue 23 Jun
55%
Wed 24 Jun
10%

Sister Island Rainfall Statistics

June Rainfall

Portland, Portland International Jetport (17.4 miles)

Total Rainfall 2026
20.4in
Daily Average 2026
0.1in
Wettest Day 14 May, 2026
2in
Wet Days 2026
73/169 (43%)
Total Rainfall May
7in
Daily Average May
0.2in
Wettest Day 14 May, 2026
2in
Wet Days May
13/31 (42%)
Total Rainfall June
2.3in
Daily Average June
0.1in
Wettest Day 11 June, 2026
1.5in
Wet Days June
7/18 (39%)

Climate (2021–2025)

Portland, Portland International Jetport (17.4 miles)

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Annual Average 2021–2025
46.1in
Monthly Average 2021–2026
3.9in
Daily Average 2021–2026
0.1in
Wettest Day 14 October, 2022
2.8in

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