South Portland Rainfall Forecast

Today 14 May
90%
Fri 15 May
100%
Sat 16 May
15%
Sun 17 May
25%
Mon 18 May
10%
Tue 19 May
20%
Wed 20 May
40%

South Portland Rainfall Statistics

May Rainfall

Portland, Portland International Jetport (3.1 miles)

Total Rainfall 2026
11.9in
Daily Average 2026
0.1in
Wettest Day 16 March, 2026
1.5in
Wet Days 2026
58/134 (43%)
Total Rainfall April
3.1in
Daily Average April
0.1in
Wettest Day 30 April, 2026
0.9in
Wet Days April
15/30 (50%)
Total Rainfall May
0.8in
Daily Average May
0.1in
Wettest Day 9 May, 2026
0.4in
Wet Days May
5/14 (36%)

Climate (2010–Present)

Portland, Portland International Jetport (3.1 miles)

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Annual Average 2021–2025
46.1in
Monthly Average 2021–2026
3.8in
Daily Average 2021–2026
0.1in
Wettest Day 14 October, 2022
2.8in

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