Dennis Rainfall Forecast

Today 26 Sep
100%
Sun 27 Sep
100%
Mon 28 Sep
75%
Tue 29 Sep
40%
Wed 30 Sep
No Rain
Thu 1 Oct
5%
Fri 2 Oct
10%

Dennis Rainfall Statistics

September Rainfall

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

Total Rainfall 2026
25.4in
Daily Average 2026
0.1in
Wettest Day 13 September, 2026
2.5in
Wet Days 2026
89/269 (33%)
Total Rainfall August
1.8in
Daily Average August
0.1in
Wettest Day 21 August, 2026
0.6in
Wet Days August
8/31 (26%)
Total Rainfall September
3.8in
Daily Average September
0.2in
Wettest Day 13 September, 2026
2.5in
Wet Days September
8/26 (31%)

Climate (2021–2025)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

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Annual Average 2021–2025
38.8in
Monthly Average 2021–2026
3.3in
Daily Average 2021–2026
0.1in
Wettest Day 8 August, 2023
3.8in

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