Princeton Rainfall Forecast

Today 7 Sep
No Rain
Tue 8 Sep
No Rain
Wed 9 Sep
75%
Thu 10 Sep
15%
Fri 11 Sep
5%
Sat 12 Sep
25%
Sun 13 Sep
30%

Princeton Rainfall Statistics

September Rainfall

Illinois Valley Regional Airport (16.2 miles)

Total Rainfall 2026
34.2in
Daily Average 2026
0.1in
Wettest Day 1 August, 2026
2.4in
Wet Days 2026
63/250 (25%)
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
0in
Daily Average September
0in
Wettest Day 1 September, 2026
0in
Wet Days September
–

Climate (2021–2025)

Illinois Valley Regional Airport (16.2 miles)

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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

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