Hourly Weather Forecast - Lake Forest, IL

12 AM
38°F
10%
1mph
SW
Partly Cloudy
Humidity
83%
Feels like
38°F
Dew Point
33°F
1 AM
38°F
10%
2mph
SW
Partly Cloudy
Humidity
84%
Feels like
38°F
Dew Point
34°F
2 AM
38°F
0%
2mph
SW
Partly Cloudy
Humidity
87%
Feels like
38°F
Dew Point
35°F
3 AM
38°F
0%
2mph
WSW
Partly Cloudy
Humidity
89%
Feels like
38°F
Dew Point
35°F
4 AM
37°F
0%
2mph
WSW
Partly Cloudy
Humidity
91%
Feels like
37°F
Dew Point
35°F
5 AM
37°F
0%
2mph
WSW
Partly Cloudy
Humidity
92%
Feels like
37°F
Dew Point
35°F
6 AM
36°F
0%
2mph
W
Partly Cloudy
Humidity
93%
Feels like
36°F
Dew Point
35°F
7 AM
37°F
0%
2mph
W
Partly Cloudy
Humidity
92%
Feels like
37°F
Dew Point
35°F
7:17 AM
8 AM
38°F
0%
2mph
W
Hazy
Humidity
92%
Feels like
38°F
Dew Point
36°F
9 AM
40°F
0%
2mph
W
Mostly Sunny
Humidity
88%
Feels like
40°F
Dew Point
37°F
10 AM
42°F
0%
2mph
WNW
Mostly Sunny
Humidity
84%
Feels like
42°F
Dew Point
37°F
11 AM
43°F
0%
2mph
WNW
Mostly Sunny
Humidity
79%
Feels like
43°F
Dew Point
37°F
12 PM
44°F
0%
2mph
WNW
Mostly Sunny
Humidity
76%
Feels like
44°F
Dew Point
37°F
1 PM
45°F
0%
2mph
WNW
Mostly Sunny
Humidity
74%
Feels like
45°F
Dew Point
37°F
2 PM
44°F
0%
2mph
WNW
Mostly Sunny
Humidity
71%
Feels like
44°F
Dew Point
35°F
3 PM
42°F
0%
2mph
WNW
Mostly Sunny
Humidity
71%
Feels like
42°F
Dew Point
34°F
4 PM
41°F
0%
1mph
WNW
Mostly Sunny
Humidity
72%
Feels like
41°F
Dew Point
33°F
4:23 PM
5 PM
39°F
0%
1mph
WNW
Clear
Humidity
76%
Feels like
39°F
Dew Point
32°F
6 PM
37°F
0%
1mph
WNW
Clear
Humidity
78%
Feels like
37°F
Dew Point
30°F
7 PM
35°F
0%
1mph
NW
Clear
Humidity
79%
Feels like
35°F
Dew Point
29°F
8 PM
34°F
0%
1mph
NW
Clear
Humidity
81%
Feels like
34°F
Dew Point
29°F
9 PM
33°F
0%
1mph
NW
Mostly Clear
Humidity
82%
Feels like
33°F
Dew Point
28°F
10 PM
32°F
0%
1mph
NNW
Mostly Clear
Humidity
83%
Feels like
32°F
Dew Point
28°F
11 PM
31°F
0%
0mph
N
Partly Cloudy
Humidity
84%
Feels like
31°F
Dew Point
27°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

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

NOAA, NCDC

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Today's Weather Outlook

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During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

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Watch vs. Warning

Flash Flood Watch and Warning Defined

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