Hourly Weather Forecast - Arnold, MD

12 AM
40°F
0%
9mph
SSW
Cloudy
Humidity
65%
Feels like
34°F
Dew Point
29°F
1 AM
40°F
0%
9mph
SSW
Cloudy
Humidity
64%
Feels like
34°F
Dew Point
29°F
2 AM
40°F
0%
8mph
SW
Cloudy
Humidity
63%
Feels like
35°F
Dew Point
29°F
3 AM
40°F
0%
8mph
SW
Cloudy
Humidity
64%
Feels like
35°F
Dew Point
29°F
4 AM
40°F
0%
7mph
SW
Cloudy
Humidity
65%
Feels like
35°F
Dew Point
29°F
5 AM
40°F
0%
6mph
SW
Mostly Cloudy
Humidity
67%
Feels like
35°F
Dew Point
30°F
6 AM
40°F
0%
5mph
WSW
Partly Cloudy
Humidity
69%
Feels like
36°F
Dew Point
30°F
7 AM
40°F
0%
5mph
WSW
Partly Cloudy
Humidity
69%
Feels like
37°F
Dew Point
31°F
7:21 AM
8 AM
42°F
0%
4mph
W
Mostly Sunny
Humidity
68%
Feels like
40°F
Dew Point
32°F
9 AM
45°F
0%
5mph
W
Partly Cloudy
Humidity
64%
Feels like
42°F
Dew Point
33°F
10 AM
47°F
0%
6mph
W
Partly Cloudy
Humidity
59%
Feels like
44°F
Dew Point
33°F
11 AM
48°F
0%
7mph
W
Mostly Sunny
Humidity
54%
Feels like
45°F
Dew Point
32°F
12 PM
49°F
0%
9mph
W
Sunny
Humidity
47%
Feels like
45°F
Dew Point
30°F
1 PM
49°F
0%
10mph
WNW
Sunny
Humidity
43%
Feels like
45°F
Dew Point
28°F
2 PM
48°F
10%
10mph
WNW
Sunny
Humidity
41%
Feels like
44°F
Dew Point
26°F
3 PM
46°F
10%
10mph
WNW
Sunny
Humidity
41%
Feels like
41°F
Dew Point
24°F
4 PM
44°F
10%
9mph
WNW
Sunny
Humidity
42%
Feels like
38°F
Dew Point
22°F
4:46 PM
5 PM
41°F
10%
9mph
WNW
Clear
Humidity
44%
Feels like
36°F
Dew Point
21°F
6 PM
39°F
10%
8mph
WNW
Clear
Humidity
46%
Feels like
33°F
Dew Point
20°F
7 PM
37°F
10%
7mph
NW
Clear
Humidity
48%
Feels like
31°F
Dew Point
19°F
8 PM
35°F
10%
7mph
NW
Clear
Humidity
50%
Feels like
29°F
Dew Point
18°F
9 PM
33°F
10%
7mph
NW
Clear
Humidity
51%
Feels like
27°F
Dew Point
17°F
10 PM
32°F
10%
6mph
NW
Clear
Humidity
53%
Feels like
26°F
Dew Point
16°F
11 PM
30°F
10%
6mph
NW
Clear
Humidity
54%
Feels like
24°F
Dew Point
16°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday'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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