Grantham Rainfall Forecast

Today 1 Sep
No Rain
Tue 2 Sep
No Rain
Wed 3 Sep
5%
Thu 4 Sep
60%
Fri 5 Sep
65%
Sat 6 Sep
25%
Sun 7 Sep
15%

Grantham Rainfall Statistics

September Rainfall

Harrisburg, Capital City Airport (8.1 miles)

Total Rainfall 2025
25.9in
Daily Average 2025
0.1in
Wettest Day 13 July, 2025
1.8in
Wet Days 2025
87/244 (36%)
Total Rainfall August
1in
Daily Average August
0.04in
Wettest Day 20 August, 2025
0.8in
Wet Days August
5/31 (16%)
Total Rainfall September
–
Daily Average September
–
Wettest Day 1 September, 2025
–
Wet Days September
–

Climate (2010–Present)

Harrisburg, Capital City Airport (8.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2020–2024
36.1in
Monthly Average 2020–2025
3.1in
Daily Average 2020–2025
0.1in
Wettest Day 1 September, 2021
5.3in

Get WillyWeather+ to remove ads