Hourly Weather Forecast - Cortland, IL

12 AM
38°F
0%
10mph
SW
Partly Cloudy
Humidity
92%
Feels like
31°F
Dew Point
35°F
1 AM
38°F
0%
10mph
SW
Mostly Cloudy
Humidity
94%
Feels like
31°F
Dew Point
36°F
2 AM
37°F
0%
10mph
SW
Mostly Cloudy
Humidity
95%
Feels like
30°F
Dew Point
36°F
3 AM
37°F
0%
10mph
WSW
Mostly Cloudy
Humidity
97%
Feels like
29°F
Dew Point
36°F
4 AM
36°F
0%
10mph
WSW
Foggy
Humidity
99%
Feels like
29°F
Dew Point
36°F
5 AM
35°F
0%
9mph
W
Foggy
Humidity
100%
Feels like
28°F
Dew Point
35°F
6 AM
35°F
0%
9mph
W
Cloudy
Humidity
96%
Feels like
27°F
Dew Point
33°F
7 AM
34°F
0%
9mph
W
Cloudy
Humidity
97%
Feels like
27°F
Dew Point
33°F
7:20 AM
8 AM
35°F
0%
9mph
WNW
Cloudy
Humidity
96%
Feels like
28°F
Dew Point
34°F
9 AM
37°F
0%
9mph
WNW
Cloudy
Humidity
94%
Feels like
30°F
Dew Point
35°F
10 AM
39°F
0%
9mph
NW
Mostly Cloudy
Humidity
89%
Feels like
33°F
Dew Point
36°F
11 AM
41°F
0%
9mph
NW
Mostly Cloudy
Humidity
83%
Feels like
35°F
Dew Point
36°F
12 PM
42°F
0%
9mph
NW
Partly Cloudy
Humidity
78%
Feels like
37°F
Dew Point
36°F
1 PM
42°F
0%
9mph
NW
Partly Cloudy
Humidity
76%
Feels like
37°F
Dew Point
35°F
2 PM
42°F
0%
8mph
NW
Partly Cloudy
Humidity
77%
Feels like
36°F
Dew Point
35°F
3 PM
40°F
0%
7mph
NW
Mostly Sunny
Humidity
80%
Feels like
35°F
Dew Point
35°F
4 PM
38°F
0%
7mph
NW
Mostly Sunny
Humidity
87%
Feels like
33°F
Dew Point
34°F
4:27 PM
5 PM
35°F
0%
6mph
NW
Hazy
Humidity
91%
Feels like
30°F
Dew Point
33°F
6 PM
34°F
0%
6mph
NW
Hazy
Humidity
92%
Feels like
28°F
Dew Point
31°F
7 PM
33°F
0%
6mph
NW
Hazy
Humidity
93%
Feels like
27°F
Dew Point
31°F
8 PM
32°F
0%
6mph
NNW
Hazy
Humidity
91%
Feels like
26°F
Dew Point
30°F
9 PM
32°F
0%
6mph
NNW
Hazy
Humidity
91%
Feels like
26°F
Dew Point
29°F
10 PM
31°F
0%
6mph
N
Mostly Clear
Humidity
90%
Feels like
25°F
Dew Point
29°F
11 PM
31°F
0%
6mph
NNE
Partly Cloudy
Humidity
91%
Feels like
25°F
Dew Point
28°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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