Hourly Weather Forecast - Cortland, IL

12 AM
44°F
40%
6mph
N
40% Chance of Light Rain
Humidity
99%
Feels like
41°F
Dew Point
44°F
1 AM
44°F
20%
5mph
NNE
Cloudy
Humidity
98%
Feels like
41°F
Dew Point
43°F
2 AM
43°F
10%
5mph
ENE
Foggy
Humidity
99%
Feels like
40°F
Dew Point
43°F
3 AM
42°F
10%
5mph
E
Foggy
Humidity
100%
Feels like
39°F
Dew Point
42°F
4 AM
42°F
10%
5mph
E
Foggy
Humidity
100%
Feels like
39°F
Dew Point
42°F
5 AM
42°F
10%
6mph
E
Foggy
Humidity
100%
Feels like
39°F
Dew Point
42°F
6 AM
43°F
10%
6mph
E
Foggy
Humidity
100%
Feels like
39°F
Dew Point
43°F
7 AM
43°F
10%
6mph
ESE
Foggy
Humidity
100%
Feels like
39°F
Dew Point
43°F
7:20 AM
8 AM
44°F
10%
6mph
SE
Foggy
Humidity
100%
Feels like
40°F
Dew Point
44°F
9 AM
45°F
10%
7mph
SE
Cloudy
Humidity
98%
Feels like
41°F
Dew Point
45°F
10 AM
46°F
10%
7mph
SSE
Cloudy
Humidity
98%
Feels like
43°F
Dew Point
46°F
11 AM
47°F
10%
7mph
S
Foggy
Humidity
99%
Feels like
44°F
Dew Point
47°F
12 PM
49°F
10%
7mph
S
Foggy
Humidity
99%
Feels like
45°F
Dew Point
48°F
1 PM
49°F
10%
7mph
SSW
Foggy
Humidity
99%
Feels like
46°F
Dew Point
49°F
2 PM
49°F
10%
6mph
SSW
Foggy
Humidity
99%
Feels like
47°F
Dew Point
49°F
3 PM
50°F
10%
6mph
SW
Foggy
Humidity
99%
Feels like
47°F
Dew Point
49°F
4 PM
50°F
10%
6mph
SW
Foggy
Humidity
100%
Feels like
50°F
Dew Point
50°F
4:28 PM
5 PM
50°F
10%
6mph
SW
Foggy
Humidity
100%
Feels like
50°F
Dew Point
50°F
6 PM
51°F
10%
6mph
SW
Cloudy
Humidity
96%
Feels like
51°F
Dew Point
49°F
7 PM
51°F
10%
7mph
SW
Cloudy
Humidity
96%
Feels like
51°F
Dew Point
50°F
8 PM
52°F
10%
7mph
WSW
Mostly Cloudy
Humidity
96%
Feels like
52°F
Dew Point
51°F
9 PM
51°F
10%
7mph
WSW
Mostly Cloudy
Humidity
95%
Feels like
51°F
Dew Point
50°F
10 PM
51°F
10%
8mph
W
Mostly Cloudy
Humidity
96%
Feels like
51°F
Dew Point
49°F
11 PM
49°F
10%
9mph
W
Foggy
Humidity
99%
Feels like
46°F
Dew Point
49°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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