Hourly Weather Forecast - Sullivan, WI

12 AM
18°F
10%
15mph
NW
Partly Cloudy
Humidity
77%
Feels like
4°F
Dew Point
12°F
1 AM
16°F
10%
14mph
NW
Partly Cloudy
Humidity
76%
Feels like
2°F
Dew Point
10°F
2 AM
15°F
10%
13mph
WNW
Partly Cloudy
Humidity
76%
Feels like
0°F
Dew Point
9°F
3 AM
13°F
10%
13mph
WNW
Partly Cloudy
Humidity
76%
Feels like
-1°F
Dew Point
7°F
4 AM
12°F
0%
12mph
WNW
Partly Cloudy
Humidity
76%
Feels like
-2°F
Dew Point
6°F
5 AM
11°F
0%
11mph
WNW
Partly Cloudy
Humidity
77%
Feels like
-3°F
Dew Point
5°F
6 AM
10°F
0%
10mph
WNW
Mostly Clear
Humidity
78%
Feels like
-4°F
Dew Point
4°F
7 AM
10°F
0%
9mph
WNW
Mostly Clear
Humidity
78%
Feels like
-3°F
Dew Point
4°F
7:21 AM
8 AM
10°F
0%
8mph
WNW
Sunny
Humidity
78%
Feels like
-2°F
Dew Point
4°F
9 AM
10°F
0%
7mph
WNW
Sunny
Humidity
78%
Feels like
-1°F
Dew Point
5°F
10 AM
11°F
10%
7mph
WNW
Mostly Sunny
Humidity
75%
Feels like
1°F
Dew Point
5°F
11 AM
13°F
10%
6mph
WNW
Partly Cloudy
Humidity
72%
Feels like
3°F
Dew Point
5°F
12 PM
14°F
10%
6mph
WNW
Mostly Cloudy
Humidity
69%
Feels like
5°F
Dew Point
6°F
1 PM
15°F
10%
4mph
WSW
Mostly Cloudy
Humidity
67%
Feels like
8°F
Dew Point
6°F
2 PM
16°F
10%
5mph
SW
Cloudy
Humidity
66%
Feels like
8°F
Dew Point
7°F
3 PM
17°F
10%
6mph
SSW
Cloudy
Humidity
65%
Feels like
8°F
Dew Point
7°F
4 PM
17°F
10%
7mph
S
Cloudy
Humidity
67%
Feels like
8°F
Dew Point
8°F
4:21 PM
5 PM
17°F
10%
6mph
S
Cloudy
Humidity
69%
Feels like
8°F
Dew Point
9°F
6 PM
18°F
10%
7mph
SSE
Cloudy
Humidity
71%
Feels like
9°F
Dew Point
10°F
7 PM
18°F
10%
7mph
SSE
Cloudy
Humidity
72%
Feels like
9°F
Dew Point
11°F
8 PM
19°F
10%
8mph
S
Cloudy
Humidity
72%
Feels like
9°F
Dew Point
12°F
9 PM
20°F
10%
9mph
S
Cloudy
Humidity
73%
Feels like
10°F
Dew Point
13°F
10 PM
21°F
20%
9mph
S
Cloudy
Humidity
73%
Feels like
11°F
Dew Point
14°F
11 PM
22°F
30%
10mph
SSE
30% Chance of Flurries
Humidity
73%
Feels like
12°F
Dew Point
15°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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