Groton Rainfall Forecast

Today 12 Sep
No Rain
Sun 13 Sep
100%
Mon 14 Sep
25%
Tue 15 Sep
No Rain
Wed 16 Sep
No Rain
Thu 17 Sep
35%
Fri 18 Sep
25%

Groton Rainfall Statistics

September Rainfall

Fitchburg, Fitchburg Municipal Airport (9.9 miles)

Total Rainfall 2026
26.4in
Daily Average 2026
0.1in
Wettest Day 3 August, 2026
4in
Wet Days 2026
87/255 (34%)
Total Rainfall August
5.5in
Daily Average August
0.2in
Wettest Day 3 August, 2026
4in
Wet Days August
7/31 (23%)
Total Rainfall September
1.4in
Daily Average September
0.1in
Wettest Day 5 September, 2026
0.6in
Wet Days September
5/12 (42%)

Climate (2021–2025)

Fitchburg, Fitchburg Municipal Airport (9.9 miles)

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Annual Average 2021–2025
43.2in
Monthly Average 2021–2026
3.5in
Daily Average 2021–2026
0.1in
Wettest Day 11 September, 2023
5.1in

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