0.1in

Rain Today

Rain Last Hour
0in

Recorded at Mattoon / Charleston, Coles County Memorial Airport Updated 17 mins ago (8 miles away)

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Real-Time Extremes

Hottest 84.1 °F
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Coldest -34.7 °F
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Windiest 89.7mph
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Wettest (Last Hour) 0.1in
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Most Humid 100%
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Least Humid 11%
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Highest Pressure 1042.7 hPa
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Lowest Pressure 985 hPa
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Johnstown Rainfall Forecast

Today 12 Dec
100%
Sat 13 Dec
80%
Sun 14 Dec
10%
Mon 15 Dec
No Rain
Tue 16 Dec
No Rain
Wed 17 Dec
5%
Thu 18 Dec
35%

Johnstown Rainfall Statistics

December Rainfall

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

Total Rainfall 2025
30in
Daily Average 2025
0.1in
Wettest Day 4 April, 2025
2.9in
Wet Days 2025
94/346 (27%)
Total Rainfall November
2in
Daily Average November
0.1in
Wettest Day 18 November, 2025
0.8in
Wet Days November
8/30 (27%)
Total Rainfall December
0.3in
Daily Average December
0.03in
Wettest Day 1 December, 2025
0.2in
Wet Days December
2/12 (17%)

Climate (2010–Present)

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

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Annual Average 2020–2024
36.6in
Monthly Average 2020–2025
3in
Daily Average 2020–2025
0.1in
Wettest Day 9 July, 2024
3.6in

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