Hourly Weather Forecast - South Mountain, PA

12 AM
23°F
0%
12mph
WNW
Mostly Clear
Humidity
61%
Feels like
12°F
Dew Point
12°F
1 AM
23°F
0%
11mph
WNW
Clear
Humidity
61%
Feels like
12°F
Dew Point
12°F
2 AM
23°F
0%
10mph
WNW
Partly Cloudy
Humidity
62%
Feels like
13°F
Dew Point
12°F
3 AM
23°F
0%
8mph
WNW
Mostly Cloudy
Humidity
62%
Feels like
13°F
Dew Point
12°F
4 AM
22°F
0%
7mph
W
Cloudy
Humidity
64%
Feels like
14°F
Dew Point
12°F
5 AM
22°F
0%
6mph
W
Cloudy
Humidity
65%
Feels like
15°F
Dew Point
12°F
6 AM
22°F
0%
5mph
W
Cloudy
Humidity
67%
Feels like
15°F
Dew Point
13°F
7 AM
22°F
0%
4mph
W
Cloudy
Humidity
68%
Feels like
16°F
Dew Point
13°F
7:27 AM
8 AM
23°F
0%
4mph
WSW
Cloudy
Humidity
66%
Feels like
18°F
Dew Point
13°F
9 AM
25°F
0%
5mph
SW
Cloudy
Humidity
63%
Feels like
19°F
Dew Point
14°F
10 AM
27°F
0%
5mph
SW
Mostly Cloudy
Humidity
60%
Feels like
20°F
Dew Point
15°F
11 AM
29°F
0%
6mph
SSW
Mostly Cloudy
Humidity
57%
Feels like
22°F
Dew Point
15°F
12 PM
31°F
0%
7mph
SSW
Partly Cloudy
Humidity
54%
Feels like
24°F
Dew Point
16°F
1 PM
33°F
0%
8mph
S
Partly Cloudy
Humidity
53%
Feels like
26°F
Dew Point
17°F
2 PM
33°F
0%
8mph
S
Partly Cloudy
Humidity
53%
Feels like
27°F
Dew Point
18°F
3 PM
34°F
0%
8mph
S
Mostly Sunny
Humidity
56%
Feels like
27°F
Dew Point
20°F
4 PM
33°F
0%
8mph
S
Partly Cloudy
Humidity
58%
Feels like
27°F
Dew Point
20°F
4:47 PM
5 PM
33°F
0%
9mph
S
Partly Cloudy
Humidity
62%
Feels like
25°F
Dew Point
21°F
6 PM
31°F
0%
10mph
S
Mostly Cloudy
Humidity
66%
Feels like
23°F
Dew Point
21°F
7 PM
31°F
0%
10mph
S
Cloudy
Humidity
69%
Feels like
22°F
Dew Point
22°F
8 PM
31°F
0%
11mph
S
Cloudy
Humidity
69%
Feels like
22°F
Dew Point
22°F
9 PM
32°F
0%
11mph
S
Cloudy
Humidity
68%
Feels like
23°F
Dew Point
23°F
10 PM
33°F
0%
12mph
S
Cloudy
Humidity
67%
Feels like
24°F
Dew Point
23°F
11 PM
33°F
0%
11mph
SSW
Cloudy
Humidity
66%
Feels like
25°F
Dew Point
23°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

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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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