Hourly Weather Forecast - South Mountain, PA

11 AM
45°F
0%
9mph
WSW
Mostly Cloudy
Humidity
69%
Feels like
41°F
Dew Point
35°F
12 PM
47°F
0%
9mph
WSW
Partly Cloudy
Humidity
64%
Feels like
42°F
Dew Point
35°F
1 PM
47°F
0%
9mph
WSW
Partly Cloudy
Humidity
62%
Feels like
43°F
Dew Point
35°F
2 PM
47°F
0%
9mph
W
Mostly Cloudy
Humidity
62%
Feels like
43°F
Dew Point
35°F
3 PM
46°F
10%
9mph
W
Mostly Cloudy
Humidity
64%
Feels like
42°F
Dew Point
35°F
4 PM
45°F
10%
8mph
W
Partly Cloudy
Humidity
66%
Feels like
41°F
Dew Point
34°F
4:46 PM
5 PM
42°F
10%
8mph
WNW
Partly Cloudy
Humidity
71%
Feels like
38°F
Dew Point
34°F
6 PM
39°F
10%
7mph
WNW
Partly Cloudy
Humidity
76%
Feels like
34°F
Dew Point
32°F
7 PM
36°F
10%
6mph
NW
Partly Cloudy
Humidity
81%
Feels like
31°F
Dew Point
31°F
8 PM
34°F
10%
6mph
NW
Partly Cloudy
Humidity
84%
Feels like
29°F
Dew Point
30°F
9 PM
33°F
10%
4mph
NW
Partly Cloudy
Humidity
87%
Feels like
29°F
Dew Point
29°F
10 PM
31°F
10%
3mph
NW
Mostly Cloudy
Humidity
89%
Feels like
31°F
Dew Point
28°F
11 PM
30°F
10%
2mph
NW
Partly Cloudy
Humidity
90%
Feels like
30°F
Dew Point
27°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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