Hourly Weather Forecast - Arnold, MO

12 AM
28°F
0%
5mph
NNW
Partly Cloudy
Humidity
79%
Feels like
22°F
Dew Point
23°F
1 AM
28°F
0%
5mph
NNW
Partly Cloudy
Humidity
79%
Feels like
22°F
Dew Point
22°F
2 AM
27°F
0%
4mph
NNW
Partly Cloudy
Humidity
79%
Feels like
22°F
Dew Point
21°F
3 AM
26°F
0%
4mph
NNW
Partly Cloudy
Humidity
80%
Feels like
22°F
Dew Point
21°F
4 AM
26°F
0%
4mph
N
Partly Cloudy
Humidity
81%
Feels like
22°F
Dew Point
21°F
5 AM
26°F
0%
3mph
N
Partly Cloudy
Humidity
82%
Feels like
22°F
Dew Point
21°F
6 AM
25°F
0%
3mph
NNE
Partly Cloudy
Humidity
83%
Feels like
25°F
Dew Point
21°F
7 AM
26°F
0%
2mph
NE
Partly Cloudy
Humidity
77%
Feels like
26°F
Dew Point
20°F
7:10 AM
8 AM
27°F
0%
3mph
ENE
Partly Cloudy
Humidity
76%
Feels like
27°F
Dew Point
21°F
9 AM
30°F
0%
3mph
E
Partly Cloudy
Humidity
71%
Feels like
27°F
Dew Point
22°F
10 AM
32°F
0%
3mph
E
Partly Cloudy
Humidity
67%
Feels like
29°F
Dew Point
23°F
11 AM
35°F
0%
3mph
E
Partly Cloudy
Humidity
66%
Feels like
32°F
Dew Point
24°F
12 PM
37°F
0%
4mph
ENE
Partly Cloudy
Humidity
63%
Feels like
34°F
Dew Point
26°F
1 PM
38°F
0%
4mph
NE
Partly Cloudy
Humidity
60%
Feels like
36°F
Dew Point
26°F
2 PM
38°F
10%
5mph
NE
Mostly Cloudy
Humidity
61%
Feels like
35°F
Dew Point
26°F
3 PM
37°F
10%
5mph
NNE
Mostly Cloudy
Humidity
63%
Feels like
33°F
Dew Point
26°F
4 PM
35°F
10%
6mph
NNE
Mostly Cloudy
Humidity
66%
Feels like
30°F
Dew Point
25°F
4:41 PM
5 PM
33°F
20%
6mph
NNE
Cloudy
Humidity
67%
Feels like
28°F
Dew Point
23°F
6 PM
31°F
20%
6mph
NNE
Cloudy
Humidity
66%
Feels like
25°F
Dew Point
22°F
7 PM
30°F
20%
7mph
N
Cloudy
Humidity
65%
Feels like
23°F
Dew Point
19°F
8 PM
28°F
20%
7mph
N
Cloudy
Humidity
63%
Feels like
20°F
Dew Point
17°F
9 PM
25°F
20%
7mph
N
Cloudy
Humidity
63%
Feels like
17°F
Dew Point
15°F
10 PM
23°F
10%
8mph
N
Mostly Cloudy
Humidity
65%
Feels like
14°F
Dew Point
13°F
11 PM
21°F
10%
7mph
N
Partly Cloudy
Humidity
67%
Feels like
12°F
Dew Point
12°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 Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday'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

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide