Hourly Weather Forecast - Arnold, PA

12 AM
21°F
0%
3mph
W
Partly Cloudy
Humidity
61%
Feels like
17°F
Dew Point
10°F
1 AM
21°F
10%
3mph
WSW
Partly Cloudy
Humidity
60%
Feels like
21°F
Dew Point
10°F
2 AM
22°F
10%
2mph
WSW
Partly Cloudy
Humidity
58%
Feels like
22°F
Dew Point
9°F
3 AM
22°F
10%
2mph
WSW
Partly Cloudy
Humidity
58%
Feels like
22°F
Dew Point
9°F
4 AM
22°F
10%
2mph
SW
Partly Cloudy
Humidity
60%
Feels like
22°F
Dew Point
10°F
5 AM
23°F
10%
2mph
SW
Partly Cloudy
Humidity
57%
Feels like
23°F
Dew Point
10°F
6 AM
23°F
10%
2mph
SSW
Partly Cloudy
Humidity
56%
Feels like
23°F
Dew Point
10°F
7 AM
24°F
10%
2mph
SSW
Partly Cloudy
Humidity
56%
Feels like
24°F
Dew Point
11°F
7:38 AM
8 AM
26°F
10%
2mph
S
Mostly Cloudy
Humidity
57%
Feels like
26°F
Dew Point
13°F
9 AM
28°F
10%
2mph
S
Cloudy
Humidity
56%
Feels like
28°F
Dew Point
15°F
10 AM
31°F
10%
2mph
S
Cloudy
Humidity
52%
Feels like
31°F
Dew Point
16°F
11 AM
35°F
10%
3mph
S
Cloudy
Humidity
47%
Feels like
35°F
Dew Point
17°F
12 PM
37°F
10%
3mph
SSW
Cloudy
Humidity
44%
Feels like
35°F
Dew Point
18°F
1 PM
40°F
20%
4mph
SSW
Cloudy
Humidity
42%
Feels like
37°F
Dew Point
18°F
2 PM
41°F
30%
4mph
SSW
30% Chance of Light Rain
Humidity
39%
Feels like
38°F
Dew Point
18°F
3 PM
41°F
30%
4mph
SSW
30% Chance of Light Rain
Humidity
37%
Feels like
39°F
Dew Point
17°F
4 PM
41°F
30%
4mph
SSW
30% Chance of Light Rain
Humidity
38%
Feels like
38°F
Dew Point
18°F
4:54 PM
5 PM
40°F
30%
4mph
SSW
30% Chance of Light Rain
Humidity
42%
Feels like
37°F
Dew Point
19°F
6 PM
39°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
47%
Feels like
36°F
Dew Point
21°F
7 PM
39°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
49%
Feels like
35°F
Dew Point
21°F
8 PM
38°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
61%
Feels like
34°F
Dew Point
26°F
9 PM
38°F
30%
5mph
SSW
30% Chance of Light Rain
Humidity
63%
Feels like
35°F
Dew Point
27°F
10 PM
38°F
30%
5mph
SW
30% Chance of Light Rain
Humidity
64%
Feels like
35°F
Dew Point
28°F
11 PM
39°F
40%
5mph
SW
40% Chance of Light Rain
Humidity
63%
Feels like
35°F
Dew Point
28°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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