Hourly Weather Forecast - Cortland, IL

12 AM
48°F
10%
10mph
WNW
Foggy
Humidity
99%
Feels like
44°F
Dew Point
48°F
1 AM
47°F
10%
11mph
WNW
Mostly Cloudy
Humidity
98%
Feels like
42°F
Dew Point
47°F
2 AM
46°F
10%
12mph
NW
Mostly Cloudy
Humidity
98%
Feels like
40°F
Dew Point
45°F
3 AM
45°F
10%
12mph
NW
Mostly Cloudy
Humidity
97%
Feels like
39°F
Dew Point
44°F
4 AM
44°F
10%
12mph
NW
Mostly Cloudy
Humidity
97%
Feels like
37°F
Dew Point
43°F
5 AM
42°F
20%
11mph
NW
Mostly Cloudy
Humidity
97%
Feels like
36°F
Dew Point
42°F
6 AM
42°F
10%
11mph
NW
Cloudy
Humidity
96%
Feels like
36°F
Dew Point
41°F
7 AM
42°F
10%
11mph
NNW
Cloudy
Humidity
96%
Feels like
35°F
Dew Point
41°F
7:21 AM
8 AM
42°F
10%
11mph
NNW
Cloudy
Humidity
93%
Feels like
35°F
Dew Point
40°F
9 AM
42°F
10%
11mph
NNW
Cloudy
Humidity
89%
Feels like
36°F
Dew Point
39°F
10 AM
43°F
10%
11mph
NNW
Cloudy
Humidity
85%
Feels like
37°F
Dew Point
39°F
11 AM
44°F
10%
11mph
N
Cloudy
Humidity
82%
Feels like
38°F
Dew Point
38°F
12 PM
44°F
10%
11mph
N
Cloudy
Humidity
80%
Feels like
38°F
Dew Point
38°F
1 PM
44°F
10%
11mph
N
Cloudy
Humidity
80%
Feels like
38°F
Dew Point
38°F
2 PM
43°F
0%
10mph
N
Cloudy
Humidity
81%
Feels like
38°F
Dew Point
38°F
3 PM
42°F
10%
9mph
NNE
Cloudy
Humidity
83%
Feels like
37°F
Dew Point
38°F
4 PM
42°F
10%
8mph
NNE
Cloudy
Humidity
86%
Feels like
37°F
Dew Point
38°F
4:29 PM
5 PM
41°F
10%
7mph
NE
Cloudy
Humidity
88%
Feels like
36°F
Dew Point
38°F
6 PM
41°F
10%
7mph
NE
Cloudy
Humidity
89%
Feels like
36°F
Dew Point
38°F
7 PM
40°F
10%
6mph
ENE
Cloudy
Humidity
90%
Feels like
35°F
Dew Point
37°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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