Hourly Weather Forecast - Cortland, IL

12 AM
27°F
10%
10mph
S
Mostly Cloudy
Humidity
66%
Feels like
17°F
Dew Point
17°F
1 AM
27°F
10%
10mph
S
Mostly Cloudy
Humidity
67%
Feels like
18°F
Dew Point
18°F
2 AM
28°F
10%
10mph
S
Cloudy
Humidity
68%
Feels like
18°F
Dew Point
18°F
3 AM
28°F
0%
10mph
S
Cloudy
Humidity
68%
Feels like
19°F
Dew Point
19°F
4 AM
28°F
0%
10mph
S
Cloudy
Humidity
68%
Feels like
19°F
Dew Point
19°F
5 AM
28°F
0%
10mph
S
Cloudy
Humidity
66%
Feels like
19°F
Dew Point
18°F
6 AM
29°F
0%
11mph
S
Mostly Cloudy
Humidity
65%
Feels like
20°F
Dew Point
19°F
7 AM
30°F
0%
11mph
S
Cloudy
Humidity
62%
Feels like
20°F
Dew Point
19°F
7:19 AM
8 AM
31°F
0%
13mph
SSE
Cloudy
Humidity
61%
Feels like
21°F
Dew Point
19°F
9 AM
33°F
0%
13mph
SSE
Cloudy
Humidity
60%
Feels like
23°F
Dew Point
20°F
10 AM
34°F
0%
13mph
S
Cloudy
Humidity
58%
Feels like
25°F
Dew Point
21°F
11 AM
35°F
0%
13mph
S
Cloudy
Humidity
55%
Feels like
27°F
Dew Point
21°F
12 PM
36°F
0%
13mph
S
Cloudy
Humidity
55%
Feels like
28°F
Dew Point
22°F
1 PM
37°F
0%
13mph
S
Cloudy
Humidity
56%
Feels like
28°F
Dew Point
22°F
2 PM
37°F
0%
12mph
S
Mostly Cloudy
Humidity
57%
Feels like
29°F
Dew Point
23°F
3 PM
37°F
0%
11mph
S
Mostly Cloudy
Humidity
61%
Feels like
29°F
Dew Point
25°F
4 PM
36°F
0%
11mph
S
Mostly Cloudy
Humidity
68%
Feels like
29°F
Dew Point
27°F
4:27 PM
5 PM
36°F
0%
10mph
S
Mostly Cloudy
Humidity
75%
Feels like
28°F
Dew Point
29°F
6 PM
36°F
10%
10mph
S
Cloudy
Humidity
78%
Feels like
29°F
Dew Point
30°F
7 PM
36°F
10%
10mph
S
Partly Cloudy
Humidity
78%
Feels like
29°F
Dew Point
30°F
8 PM
37°F
10%
10mph
S
Partly Cloudy
Humidity
76%
Feels like
30°F
Dew Point
30°F
9 PM
37°F
10%
10mph
SSW
Mostly Clear
Humidity
78%
Feels like
30°F
Dew Point
31°F
10 PM
37°F
10%
10mph
SSW
Mostly Clear
Humidity
82%
Feels like
30°F
Dew Point
32°F
11 PM
37°F
0%
10mph
SSW
Partly Cloudy
Humidity
87%
Feels like
31°F
Dew Point
34°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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