Griswold Island Rainfall Forecast

Today 3 May
20%
Mon 4 May
No Rain
Tue 5 May
No Rain
Wed 6 May
45%
Thu 7 May
85%
Fri 8 May
60%
Sat 9 May
25%

Griswold Island Rainfall Statistics

May Rainfall

Groton / New London, Groton / New London Airport (9.3 miles)

Total Rainfall 2026
6.8in
Daily Average 2026
0.1in
Wettest Day 16 March, 2026
0.8in
Wet Days 2026
31/123 (25%)
Total Rainfall April
1.2in
Daily Average April
0.1in
Wettest Day 17 April, 2026
0.7in
Wet Days April
5/30 (17%)
Total Rainfall May
–
Daily Average May
–
Wettest Day 3 May, 2026
–
Wet Days May
–

Climate (2010–Present)

Groton / New London, Groton / New London Airport (9.3 miles)

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Annual Average 2021–2025
37.8in
Monthly Average 2021–2026
3.1in
Daily Average 2021–2026
0.1in
Wettest Day 11 December, 2024
3in

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