Grafton Rainfall Forecast

Today 20 May
100%
Wed 21 May
60%
Thu 22 May
60%
Fri 23 May
5%
Sat 24 May
25%
Sun 25 May
35%
Mon 26 May
45%

Grafton Rainfall Statistics

May Rainfall

Mason City Municipal Airport (17.4 miles)

Total Rainfall 2025
8.8in
Daily Average 2025
0.1in
Wettest Day 18 April, 2025
1.3in
Wet Days 2025
31/140 (22%)
Total Rainfall April
4.6in
Daily Average April
0.2in
Wettest Day 18 April, 2025
1.3in
Wet Days April
12/30 (40%)
Total Rainfall May
0.1in
Daily Average May
0in
Wettest Day 1 May, 2025
0.03in
Wet Days May
3/20 (15%)

Climate (2010–Present)

Mason City Municipal Airport (17.4 miles)

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Annual Average 2020–2024
28.3in
Monthly Average 2020–2025
2.4in
Daily Average 2020–2025
0.1in
Wettest Day 27 August, 2021
3.1in

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