Hourly Weather Forecast - Cortland, IL

12 AM
19°F
0%
7mph
SW
Partly Cloudy
Humidity
88%
Feels like
9°F
Dew Point
16°F
1 AM
18°F
0%
6mph
SW
Partly Cloudy
Humidity
89%
Feels like
9°F
Dew Point
15°F
2 AM
17°F
0%
6mph
SW
Partly Cloudy
Humidity
89%
Feels like
8°F
Dew Point
14°F
3 AM
17°F
0%
6mph
SSW
Partly Cloudy
Humidity
89%
Feels like
8°F
Dew Point
14°F
4 AM
17°F
0%
7mph
SSW
Partly Cloudy
Humidity
88%
Feels like
8°F
Dew Point
14°F
5 AM
17°F
0%
7mph
SSW
Mostly Cloudy
Humidity
90%
Feels like
7°F
Dew Point
14°F
6 AM
17°F
0%
8mph
S
Mostly Cloudy
Humidity
89%
Feels like
7°F
Dew Point
14°F
7 AM
18°F
0%
9mph
S
Mostly Cloudy
Humidity
90%
Feels like
7°F
Dew Point
15°F
7:16 AM
8 AM
20°F
0%
9mph
SSW
Partly Cloudy
Humidity
89%
Feels like
10°F
Dew Point
18°F
9 AM
23°F
0%
10mph
SSW
Partly Cloudy
Humidity
89%
Feels like
13°F
Dew Point
20°F
10 AM
26°F
0%
11mph
SSW
Partly Cloudy
Humidity
87%
Feels like
16°F
Dew Point
22°F
11 AM
28°F
0%
11mph
SSW
Mostly Sunny
Humidity
86%
Feels like
18°F
Dew Point
24°F
12 PM
30°F
0%
12mph
SSW
Sunny
Humidity
85%
Feels like
20°F
Dew Point
26°F
1 PM
31°F
0%
12mph
SSW
Sunny
Humidity
85%
Feels like
22°F
Dew Point
27°F
2 PM
32°F
0%
13mph
SSW
Sunny
Humidity
86%
Feels like
22°F
Dew Point
28°F
3 PM
32°F
0%
13mph
SSW
Sunny
Humidity
87%
Feels like
22°F
Dew Point
28°F
4 PM
31°F
0%
13mph
SSW
Sunny
Humidity
89%
Feels like
22°F
Dew Point
29°F
4:24 PM
5 PM
31°F
0%
13mph
SSW
Hazy
Humidity
91%
Feels like
21°F
Dew Point
29°F
6 PM
31°F
0%
14mph
SSW
Hazy
Humidity
94%
Feels like
21°F
Dew Point
29°F
7 PM
31°F
0%
14mph
SSW
Hazy
Humidity
91%
Feels like
20°F
Dew Point
29°F
8 PM
31°F
0%
14mph
SSW
Partly Cloudy
Humidity
92%
Feels like
21°F
Dew Point
29°F
9 PM
31°F
0%
13mph
SSW
Cloudy
Humidity
91%
Feels like
22°F
Dew Point
29°F
10 PM
32°F
0%
13mph
SW
Cloudy
Humidity
91%
Feels like
23°F
Dew Point
30°F
11 PM
33°F
0%
13mph
SW
Cloudy
Humidity
92%
Feels like
23°F
Dew Point
31°F

Snowfall forecast through Saturday A.M.

More Snow Across the Northern U.S. into the Midwest

The parade of snow will continue across the northern U.S. and Midwest through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Rains Finally Easing Across the Northwest

Friday's Weather Outlook

Friday's Weather Outlook

Weekend Weather Preview

Weekend Weather Preview

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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