Hourly Weather Forecast - Lannon, WI

5 AM
23°F
10%
15mph
SSW
Cloudy
Humidity
92%
Feels like
10°F
Dew Point
21°F
6 AM
25°F
10%
15mph
SW
Cloudy
Humidity
91%
Feels like
12°F
Dew Point
22°F
7 AM
26°F
10%
14mph
SW
Cloudy
Humidity
89%
Feels like
15°F
Dew Point
24°F
7:12 AM
8 AM
29°F
10%
13mph
WSW
Cloudy
Humidity
85%
Feels like
18°F
Dew Point
24°F
9 AM
30°F
0%
13mph
WSW
Cloudy
Humidity
81%
Feels like
21°F
Dew Point
25°F
10 AM
32°F
0%
12mph
WSW
Cloudy
Humidity
78%
Feels like
23°F
Dew Point
26°F
11 AM
33°F
0%
12mph
WSW
Cloudy
Humidity
76%
Feels like
24°F
Dew Point
26°F
12 PM
34°F
0%
11mph
W
Cloudy
Humidity
74%
Feels like
25°F
Dew Point
26°F
1 PM
34°F
0%
10mph
WSW
Cloudy
Humidity
74%
Feels like
26°F
Dew Point
27°F
2 PM
34°F
10%
9mph
WSW
Cloudy
Humidity
75%
Feels like
27°F
Dew Point
27°F
3 PM
34°F
10%
7mph
WSW
Cloudy
Humidity
77%
Feels like
28°F
Dew Point
27°F
4 PM
34°F
20%
7mph
SW
Cloudy
Humidity
78%
Feels like
29°F
Dew Point
28°F
4:17 PM
5 PM
35°F
30%
7mph
SSW
30% Chance of Flurries
Humidity
80%
Feels like
29°F
Dew Point
29°F
6 PM
34°F
50%
7mph
S
50% Chance of Snow
Humidity
84%
Feels like
28°F
Dew Point
30°F
7 PM
34°F
60%
8mph
S
60% Chance of Snow
Humidity
88%
Feels like
27°F
Dew Point
31°F
8 PM
34°F
90%
10mph
S
Sleet
Humidity
90%
Feels like
26°F
Dew Point
31°F
9 PM
35°F
90%
11mph
S
Snow
Humidity
90%
Feels like
27°F
Dew Point
32°F
10 PM
36°F
70%
11mph
S
70% Chance Frozen Mix
Humidity
90%
Feels like
28°F
Dew Point
33°F
11 PM
37°F
70%
11mph
SW
70% Chance of Light Rain
Humidity
88%
Feels like
29°F
Dew Point
34°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy, Flooding Rain Impacts the Northwest

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

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Outdoor Sports Guide