Johnstown Rainfall Forecast

Today 10 Jun
20%
Thu 11 Jun
60%
Fri 12 Jun
90%
Sat 13 Jun
5%
Sun 14 Jun
75%
Mon 15 Jun
20%
Tue 16 Jun
15%

Johnstown Rainfall Statistics

June Rainfall

Mattoon / Charleston, Coles County Memorial Airport (7.5 miles)

Total Rainfall 2026
22.8in
Daily Average 2026
0.1in
Wettest Day 8 June, 2026
4.2in
Wet Days 2026
45/161 (28%)
Total Rainfall May
3.8in
Daily Average May
0.1in
Wettest Day 5 May, 2026
1.5in
Wet Days May
10/31 (32%)
Total Rainfall June
4.2in
Daily Average June
0.5in
Wettest Day 8 June, 2026
4.2in
Wet Days June
1/10 (10%)

Climate (2010–Present)

Mattoon / Charleston, Coles County Memorial Airport (7.5 miles)

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

Annual Average 2021–2025
35.9in
Monthly Average 2021–2026
3in
Daily Average 2021–2026
0.1in
Wettest Day 8 June, 2026
4.2in

Get WillyWeather+ to remove ads