Starved Rock State Park Rainfall Forecast

Today 14 Jul
No Rain
Wed 15 Jul
No Rain
Thu 16 Jul
10%
Fri 17 Jul
50%
Sat 18 Jul
30%
Sun 19 Jul
35%
Mon 20 Jul
20%

Starved Rock State Park Rainfall Statistics

July Rainfall

Illinois Valley Regional Airport (7.5 miles)

Total Rainfall 2026
24.6in
Daily Average 2026
0.1in
Wettest Day 2 April, 2026
2.3in
Wet Days 2026
46/195 (24%)
Total Rainfall June
7.6in
Daily Average June
0.3in
Wettest Day 7 June, 2026
1.9in
Wet Days June
12/30 (40%)
Total Rainfall July
3.8in
Daily Average July
0.3in
Wettest Day 4 July, 2026
2.1in
Wet Days July
4/14 (29%)

Climate (2021–2025)

Illinois Valley Regional Airport (7.5 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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