Princeton Rainfall Forecast

Today 21 Sep
30%
Tue 22 Sep
30%
Wed 23 Sep
No Rain
Thu 24 Sep
No Rain
Fri 25 Sep
5%
Sat 26 Sep
10%
Sun 27 Sep
20%

Princeton Rainfall Statistics

September Rainfall

Illinois Valley Regional Airport (16.2 miles)

Total Rainfall 2026
35.8in
Daily Average 2026
0.1in
Wettest Day 1 August, 2026
2.4in
Wet Days 2026
68/264 (26%)
Total Rainfall August
8.8in
Daily Average August
0.3in
Wettest Day 1 August, 2026
2.4in
Wet Days August
15/31 (48%)
Total Rainfall September
1.6in
Daily Average September
0.1in
Wettest Day 19 September, 2026
0.7in
Wet Days September
5/21 (24%)

Climate (2021–2025)

Illinois Valley Regional Airport (16.2 miles)

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

Annual Average 2021–2025
34.5in
Monthly Average 2021–2026
3.2in
Daily Average 2021–2026
0.1in
Wettest Day 14 December, 2022
3.4in

Get WillyWeather+ to remove ads