Hourly Weather Forecast - Arnold, MO

12 AM
16°F
0%
4mph
ESE
Clear
Humidity
52%
Feels like
9°F
Dew Point
1°F
1 AM
15°F
0%
4mph
ESE
Clear
Humidity
53%
Feels like
8°F
Dew Point
1°F
2 AM
15°F
0%
4mph
SE
Clear
Humidity
55%
Feels like
8°F
Dew Point
2°F
3 AM
14°F
0%
4mph
SE
Clear
Humidity
57%
Feels like
7°F
Dew Point
2°F
4 AM
14°F
0%
4mph
SE
Clear
Humidity
57%
Feels like
7°F
Dew Point
2°F
5 AM
14°F
0%
4mph
SE
Clear
Humidity
58%
Feels like
7°F
Dew Point
2°F
6 AM
14°F
0%
4mph
SSE
Clear
Humidity
58%
Feels like
7°F
Dew Point
2°F
7 AM
15°F
10%
5mph
SSE
Mostly Clear
Humidity
61%
Feels like
7°F
Dew Point
4°F
7:11 AM
8 AM
17°F
10%
5mph
SSE
Partly Cloudy
Humidity
60%
Feels like
9°F
Dew Point
5°F
9 AM
20°F
10%
5mph
SSE
Mostly Cloudy
Humidity
54%
Feels like
12°F
Dew Point
6°F
10 AM
23°F
10%
6mph
S
Cloudy
Humidity
50%
Feels like
16°F
Dew Point
7°F
11 AM
26°F
10%
6mph
S
Cloudy
Humidity
47%
Feels like
20°F
Dew Point
9°F
12 PM
29°F
10%
6mph
S
Cloudy
Humidity
45%
Feels like
22°F
Dew Point
10°F
1 PM
30°F
10%
6mph
S
Cloudy
Humidity
46%
Feels like
24°F
Dew Point
12°F
2 PM
31°F
10%
6mph
S
Mostly Cloudy
Humidity
48%
Feels like
25°F
Dew Point
14°F
3 PM
31°F
10%
6mph
S
Mostly Cloudy
Humidity
50%
Feels like
26°F
Dew Point
15°F
4 PM
31°F
10%
5mph
S
Partly Cloudy
Humidity
53%
Feels like
26°F
Dew Point
16°F
4:41 PM
5 PM
31°F
10%
4mph
S
Mostly Clear
Humidity
54%
Feels like
27°F
Dew Point
16°F
6 PM
31°F
10%
3mph
S
Clear
Humidity
56%
Feels like
27°F
Dew Point
17°F
7 PM
31°F
10%
3mph
S
Clear
Humidity
57%
Feels like
28°F
Dew Point
17°F
8 PM
30°F
10%
3mph
S
Clear
Humidity
60%
Feels like
27°F
Dew Point
18°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