Williamsport Rainfall Forecast

Today 18 May
40%
Tue 19 May
20%
Wed 20 May
75%
Thu 21 May
40%
Fri 22 May
55%
Sat 23 May
80%
Sun 24 May
65%

Williamsport Rainfall Statistics

May Rainfall

Petersburg, Grant County Airport (16.2 miles)

Total Rainfall 2026
15.1in
Daily Average 2026
0.1in
Wettest Day 5 March, 2026
3.3in
Wet Days 2026
39/138 (28%)
Total Rainfall April
2.1in
Daily Average April
0.1in
Wettest Day 29 April, 2026
0.5in
Wet Days April
7/30 (23%)
Total Rainfall May
0.3in
Daily Average May
0.02in
Wettest Day 10 May, 2026
0.2in
Wet Days May
4/18 (22%)

Climate (2010–Present)

Petersburg, Grant County Airport (16.2 miles)

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Annual Average 2021–2025
23.7in
Monthly Average 2021–2026
2.2in
Daily Average 2021–2026
0.1in
Wettest Day 5 March, 2026
3.3in

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