Hourly Weather Forecast - Arnold, MD

12 AM
33°F
0%
3mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
33°F
Dew Point
22°F
1 AM
33°F
10%
3mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
30°F
Dew Point
22°F
2 AM
34°F
10%
3mph
SSW
Mostly Cloudy
Humidity
64%
Feels like
31°F
Dew Point
23°F
3 AM
34°F
10%
4mph
SSW
Mostly Cloudy
Humidity
65%
Feels like
31°F
Dew Point
24°F
4 AM
35°F
10%
4mph
SSW
Cloudy
Humidity
66%
Feels like
31°F
Dew Point
24°F
5 AM
35°F
10%
4mph
S
Cloudy
Humidity
66%
Feels like
32°F
Dew Point
25°F
6 AM
35°F
20%
4mph
S
Cloudy
Humidity
68%
Feels like
32°F
Dew Point
26°F
7 AM
36°F
20%
5mph
S
Cloudy
Humidity
68%
Feels like
32°F
Dew Point
26°F
7:22 AM
8 AM
37°F
20%
5mph
SSW
Cloudy
Humidity
66%
Feels like
32°F
Dew Point
26°F
9 AM
38°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
64%
Feels like
34°F
Dew Point
27°F
10 AM
39°F
30%
6mph
SSW
30% Chance of Light Rain
Humidity
64%
Feels like
34°F
Dew Point
28°F
11 AM
39°F
30%
6mph
SSW
30% Chance of Light Rain
Humidity
65%
Feels like
34°F
Dew Point
29°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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