Hourly Weather Forecast - Arnold, MO

12 AM
29°F
10%
4mph
SW
Cloudy
Humidity
60%
Feels like
24°F
Dew Point
17°F
1 AM
28°F
10%
4mph
SW
Cloudy
Humidity
62%
Feels like
23°F
Dew Point
17°F
2 AM
28°F
10%
4mph
SSW
Cloudy
Humidity
65%
Feels like
24°F
Dew Point
18°F
3 AM
28°F
10%
4mph
SSW
Cloudy
Humidity
67%
Feels like
23°F
Dew Point
18°F
4 AM
27°F
10%
4mph
SSW
Cloudy
Humidity
69%
Feels like
23°F
Dew Point
18°F
5 AM
27°F
10%
4mph
SSW
Mostly Cloudy
Humidity
72%
Feels like
23°F
Dew Point
19°F
6 AM
27°F
10%
4mph
S
Mostly Cloudy
Humidity
73%
Feels like
23°F
Dew Point
20°F
7 AM
28°F
10%
4mph
S
Mostly Cloudy
Humidity
68%
Feels like
24°F
Dew Point
19°F
7:12 AM
8 AM
30°F
10%
4mph
S
Mostly Cloudy
Humidity
68%
Feels like
27°F
Dew Point
21°F
9 AM
33°F
10%
4mph
S
Mostly Cloudy
Humidity
65%
Feels like
29°F
Dew Point
22°F
10 AM
35°F
10%
4mph
S
Mostly Cloudy
Humidity
65%
Feels like
32°F
Dew Point
25°F
11 AM
38°F
10%
5mph
S
Cloudy
Humidity
64%
Feels like
34°F
Dew Point
27°F
12 PM
40°F
10%
6mph
S
Mostly Cloudy
Humidity
64%
Feels like
36°F
Dew Point
29°F
1 PM
41°F
0%
6mph
S
Mostly Cloudy
Humidity
63%
Feels like
36°F
Dew Point
29°F
2 PM
40°F
0%
6mph
S
Mostly Cloudy
Humidity
65%
Feels like
36°F
Dew Point
30°F
3 PM
40°F
0%
6mph
SSE
Cloudy
Humidity
66%
Feels like
35°F
Dew Point
29°F
4 PM
39°F
0%
7mph
SSE
Cloudy
Humidity
70%
Feels like
34°F
Dew Point
30°F
4:42 PM
5 PM
38°F
0%
7mph
SSE
Cloudy
Humidity
72%
Feels like
33°F
Dew Point
30°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday'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