Swan River Mouth Rainfall Forecast

Today 8 May
20%
Sat 9 May
65%
Sun 10 May
100%
Mon 11 May
95%
Tue 12 May
75%
Wed 13 May
15%
Thu 14 May
55%

Swan River Mouth Rainfall Statistics

May Rainfall

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

Total Rainfall 2026
9.7in
Daily Average 2026
0.1in
Wettest Day 16 March, 2026
1.1in
Wet Days 2026
43/128 (34%)
Total Rainfall April
1.5in
Daily Average April
0.1in
Wettest Day 1 April, 2026
0.4in
Wet Days April
12/30 (40%)
Total Rainfall May
0.5in
Daily Average May
0.1in
Wettest Day 2 May, 2026
0.3in
Wet Days May
2/8 (25%)

Climate (2010–Present)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

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Annual Average 2021–2025
38.8in
Monthly Average 2021–2026
3.2in
Daily Average 2021–2026
0.1in
Wettest Day 8 August, 2023
3.8in

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