Hourly Weather Forecast - Union, IL

12 AM
29°F
0%
8mph
WNW
Mostly Clear
Humidity
74%
Feels like
22°F
Dew Point
22°F
1 AM
28°F
0%
8mph
WNW
Partly Cloudy
Humidity
73%
Feels like
21°F
Dew Point
21°F
2 AM
27°F
0%
8mph
NW
Partly Cloudy
Humidity
73%
Feels like
19°F
Dew Point
20°F
3 AM
26°F
0%
7mph
NW
Partly Cloudy
Humidity
73%
Feels like
18°F
Dew Point
19°F
4 AM
25°F
0%
7mph
NW
Partly Cloudy
Humidity
72%
Feels like
17°F
Dew Point
17°F
5 AM
23°F
0%
6mph
NW
Partly Cloudy
Humidity
71%
Feels like
16°F
Dew Point
15°F
6 AM
23°F
0%
6mph
NW
Partly Cloudy
Humidity
67%
Feels like
15°F
Dew Point
14°F
7 AM
24°F
10%
6mph
NW
Partly Cloudy
Humidity
73%
Feels like
16°F
Dew Point
17°F
7:19 AM
8 AM
25°F
10%
6mph
NW
Mostly Cloudy
Humidity
67%
Feels like
17°F
Dew Point
15°F
9 AM
26°F
10%
7mph
NW
Cloudy
Humidity
64%
Feels like
18°F
Dew Point
15°F
10 AM
26°F
10%
7mph
NW
Cloudy
Humidity
61%
Feels like
19°F
Dew Point
15°F
11 AM
27°F
10%
6mph
NW
Cloudy
Humidity
60%
Feels like
20°F
Dew Point
15°F
12 PM
28°F
10%
6mph
NW
Cloudy
Humidity
59%
Feels like
21°F
Dew Point
15°F
1 PM
28°F
10%
6mph
NW
Mostly Cloudy
Humidity
59%
Feels like
21°F
Dew Point
15°F
2 PM
28°F
30%
6mph
NW
30% Chance of Heavy Snow
Humidity
60%
Feels like
21°F
Dew Point
16°F
3 PM
28°F
30%
6mph
NW
30% Chance of Heavy Snow
Humidity
63%
Feels like
21°F
Dew Point
16°F
4 PM
27°F
10%
6mph
NW
Mostly Cloudy
Humidity
65%
Feels like
20°F
Dew Point
17°F
4:24 PM
5 PM
26°F
10%
6mph
NNW
Mostly Cloudy
Humidity
70%
Feels like
19°F
Dew Point
17°F
6 PM
25°F
10%
5mph
NNW
Partly Cloudy
Humidity
71%
Feels like
18°F
Dew Point
17°F
7 PM
24°F
10%
5mph
NNW
Mostly Cloudy
Humidity
77%
Feels like
18°F
Dew Point
19°F
8 PM
24°F
10%
5mph
N
Cloudy
Humidity
77%
Feels like
18°F
Dew Point
18°F
9 PM
24°F
10%
5mph
N
Cloudy
Humidity
76%
Feels like
18°F
Dew Point
18°F
10 PM
24°F
10%
3mph
NNE
Cloudy
Humidity
76%
Feels like
24°F
Dew Point
17°F
11 PM
23°F
10%
1mph
E
Mostly Cloudy
Humidity
76%
Feels like
23°F
Dew Point
17°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday'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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