Hourly Weather Forecast - Cortland, IL

12 AM
25°F
20%
15mph
S
Cloudy
Humidity
63%
Feels like
13°F
Dew Point
15°F
1 AM
26°F
10%
15mph
S
Cloudy
Humidity
60%
Feels like
14°F
Dew Point
14°F
2 AM
27°F
10%
15mph
S
Cloudy
Humidity
60%
Feels like
14°F
Dew Point
15°F
3 AM
27°F
0%
16mph
S
Cloudy
Humidity
62%
Feels like
15°F
Dew Point
16°F
4 AM
28°F
0%
16mph
S
Cloudy
Humidity
65%
Feels like
16°F
Dew Point
17°F
5 AM
28°F
10%
16mph
S
Mostly Cloudy
Humidity
67%
Feels like
16°F
Dew Point
19°F
6 AM
29°F
10%
16mph
S
Mostly Cloudy
Humidity
68%
Feels like
17°F
Dew Point
19°F
7 AM
30°F
10%
16mph
SSW
Mostly Cloudy
Humidity
67%
Feels like
19°F
Dew Point
20°F
7:18 AM
8 AM
32°F
10%
15mph
SSW
Mostly Cloudy
Humidity
65%
Feels like
22°F
Dew Point
22°F
9 AM
35°F
10%
15mph
SSW
Mostly Cloudy
Humidity
62%
Feels like
25°F
Dew Point
23°F
10 AM
37°F
10%
15mph
SSW
Cloudy
Humidity
59%
Feels like
28°F
Dew Point
24°F
11 AM
39°F
10%
15mph
SW
Cloudy
Humidity
59%
Feels like
30°F
Dew Point
25°F
12 PM
40°F
10%
15mph
SW
Cloudy
Humidity
59%
Feels like
31°F
Dew Point
26°F
1 PM
40°F
10%
13mph
SW
Cloudy
Humidity
59%
Feels like
33°F
Dew Point
27°F
2 PM
40°F
10%
12mph
SW
Cloudy
Humidity
62%
Feels like
33°F
Dew Point
28°F
3 PM
39°F
10%
10mph
WSW
Cloudy
Humidity
66%
Feels like
33°F
Dew Point
29°F
4 PM
38°F
10%
9mph
WSW
Cloudy
Humidity
73%
Feels like
31°F
Dew Point
30°F
4:26 PM
5 PM
36°F
10%
9mph
WSW
Cloudy
Humidity
81%
Feels like
29°F
Dew Point
31°F
6 PM
35°F
10%
9mph
W
Cloudy
Humidity
86%
Feels like
28°F
Dew Point
31°F
7 PM
35°F
10%
9mph
W
Cloudy
Humidity
90%
Feels like
28°F
Dew Point
32°F
8 PM
35°F
10%
9mph
WNW
Cloudy
Humidity
88%
Feels like
27°F
Dew Point
31°F
9 PM
34°F
10%
10mph
NW
Cloudy
Humidity
87%
Feels like
26°F
Dew Point
31°F
10 PM
33°F
10%
9mph
NW
Cloudy
Humidity
88%
Feels like
26°F
Dew Point
30°F
11 PM
32°F
10%
9mph
NW
Cloudy
Humidity
88%
Feels like
25°F
Dew Point
29°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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