Hourly Weather Forecast - Arnold, PA

12 AM
42°F
40%
5mph
SW
40% Chance of Light Rain
Humidity
55%
Feels like
39°F
Dew Point
27°F
1 AM
43°F
40%
5mph
SW
40% Chance Rain Showers
Humidity
55%
Feels like
40°F
Dew Point
28°F
2 AM
43°F
40%
5mph
SW
40% Chance of Light Rain
Humidity
58%
Feels like
40°F
Dew Point
29°F
3 AM
42°F
40%
5mph
SW
40% Chance of Light Rain
Humidity
63%
Feels like
39°F
Dew Point
30°F
4 AM
41°F
40%
5mph
WSW
40% Chance of Light Rain
Humidity
67%
Feels like
38°F
Dew Point
31°F
5 AM
40°F
30%
5mph
WSW
30% Chance of Light Rain
Humidity
68%
Feels like
37°F
Dew Point
31°F
6 AM
40°F
30%
4mph
WSW
30% Chance of Light Rain
Humidity
71%
Feels like
37°F
Dew Point
31°F
7 AM
39°F
30%
4mph
WSW
30% Chance of Light Rain
Humidity
72%
Feels like
37°F
Dew Point
31°F
7:39 AM
8 AM
40°F
30%
4mph
WSW
30% Chance of Light Rain
Humidity
74%
Feels like
37°F
Dew Point
32°F
9 AM
40°F
20%
3mph
WSW
Cloudy
Humidity
74%
Feels like
38°F
Dew Point
33°F
10 AM
42°F
20%
3mph
W
Cloudy
Humidity
73%
Feels like
40°F
Dew Point
33°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday'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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