Hourly Weather Forecast - Potomac, IL

12 AM
26°F
10%
3mph
ENE
Mostly Cloudy
Humidity
70%
Feels like
22°F
Dew Point
18°F
1 AM
26°F
10%
3mph
ENE
Mostly Cloudy
Humidity
69%
Feels like
22°F
Dew Point
17°F
2 AM
26°F
0%
4mph
ENE
Cloudy
Humidity
69%
Feels like
21°F
Dew Point
17°F
3 AM
26°F
0%
4mph
ENE
Cloudy
Humidity
69%
Feels like
20°F
Dew Point
17°F
4 AM
25°F
10%
5mph
ENE
Mostly Cloudy
Humidity
70%
Feels like
20°F
Dew Point
17°F
5 AM
25°F
10%
5mph
E
Mostly Cloudy
Humidity
71%
Feels like
19°F
Dew Point
17°F
6 AM
25°F
10%
5mph
E
Mostly Cloudy
Humidity
72%
Feels like
19°F
Dew Point
17°F
7 AM
26°F
10%
5mph
E
Mostly Cloudy
Humidity
72%
Feels like
20°F
Dew Point
18°F
7:10 AM
8 AM
27°F
10%
6mph
E
Mostly Cloudy
Humidity
71%
Feels like
21°F
Dew Point
19°F
9 AM
29°F
10%
6mph
E
Mostly Cloudy
Humidity
69%
Feels like
23°F
Dew Point
20°F
10 AM
31°F
10%
6mph
ESE
Partly Cloudy
Humidity
66%
Feels like
25°F
Dew Point
21°F
11 AM
33°F
10%
7mph
ESE
Partly Cloudy
Humidity
62%
Feels like
27°F
Dew Point
22°F
12 PM
35°F
10%
7mph
ESE
Partly Cloudy
Humidity
59%
Feels like
29°F
Dew Point
22°F
1 PM
37°F
10%
7mph
ESE
Partly Cloudy
Humidity
58%
Feels like
31°F
Dew Point
23°F
2 PM
38°F
10%
7mph
ESE
Mostly Sunny
Humidity
57%
Feels like
32°F
Dew Point
24°F
3 PM
38°F
10%
7mph
ESE
Mostly Sunny
Humidity
57%
Feels like
32°F
Dew Point
24°F
4 PM
37°F
10%
7mph
ESE
Mostly Sunny
Humidity
60%
Feels like
31°F
Dew Point
24°F
4:28 PM
5 PM
35°F
10%
6mph
ESE
Mostly Clear
Humidity
65%
Feels like
29°F
Dew Point
24°F
6 PM
33°F
10%
6mph
ESE
Partly Cloudy
Humidity
69%
Feels like
28°F
Dew Point
24°F
7 PM
33°F
30%
6mph
ESE
30% Chance Frozen Mix
Humidity
72%
Feels like
27°F
Dew Point
25°F
8 PM
33°F
30%
6mph
SE
30% Chance of Snow
Humidity
74%
Feels like
27°F
Dew Point
25°F
9 PM
32°F
30%
6mph
SE
30% Chance of Snow
Humidity
76%
Feels like
26°F
Dew Point
26°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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