Princeton Rainfall Forecast

Today 3 Aug
No Rain
Tue 4 Aug
No Rain
Wed 5 Aug
70%
Thu 6 Aug
80%
Fri 7 Aug
10%
Sat 8 Aug
10%
Sun 9 Aug
15%

Princeton Rainfall Statistics

August Rainfall

Illinois Valley Regional Airport (16.2 miles)

Total Rainfall 2026
27.7in
Daily Average 2026
0.1in
Wettest Day 1 August, 2026
2.4in
Wet Days 2026
49/215 (23%)
Total Rainfall July
4.7in
Daily Average July
0.2in
Wettest Day 4 July, 2026
2.1in
Wet Days July
6/31 (19%)
Total Rainfall August
2.4in
Daily Average August
2.4in
Wettest Day 1 August, 2026
2.4in
Wet Days August
1/3 (33%)

Climate (2021–2025)

Illinois Valley Regional Airport (16.2 miles)

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Annual Average 2021–2025
34.5in
Monthly Average 2021–2026
3.1in
Daily Average 2021–2026
0.1in
Wettest Day 14 December, 2022
3.4in

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