Hourly Weather Forecast - South Mountain, PA

1 PM
37°F
20%
10mph
SSW
Cloudy
Humidity
81%
Feels like
31°F
Dew Point
32°F
2 PM
37°F
70%
9mph
SSW
70% Chance of Light Rain
Humidity
84%
Feels like
31°F
Dew Point
33°F
3 PM
37°F
60%
8mph
SW
60% Chance of Light Rain
Humidity
89%
Feels like
31°F
Dew Point
34°F
4 PM
37°F
40%
7mph
SW
40% Chance of Light Rain
Humidity
93%
Feels like
31°F
Dew Point
35°F
4:45 PM
5 PM
36°F
30%
8mph
SW
30% Chance of Light Rain
Humidity
96%
Feels like
30°F
Dew Point
35°F
6 PM
36°F
10%
9mph
SW
Cloudy
Humidity
98%
Feels like
29°F
Dew Point
35°F
7 PM
35°F
10%
10mph
WSW
Foggy
Humidity
99%
Feels like
27°F
Dew Point
35°F
8 PM
35°F
10%
11mph
WSW
Partly Cloudy
Humidity
98%
Feels like
26°F
Dew Point
34°F
9 PM
34°F
0%
12mph
WSW
Partly Cloudy
Humidity
95%
Feels like
25°F
Dew Point
33°F
10 PM
33°F
0%
12mph
W
Partly Cloudy
Humidity
93%
Feels like
24°F
Dew Point
31°F
11 PM
32°F
0%
12mph
W
Partly Cloudy
Humidity
89%
Feels like
23°F
Dew Point
29°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Thursday's Weather Outlook

Thursday's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide