Hourly Weather Forecast - South Mountain, PA

12 AM
23°F
20%
4mph
SW
Mostly Cloudy
Humidity
89%
Feels like
18°F
Dew Point
20°F
1 AM
23°F
10%
4mph
SW
Cloudy
Humidity
90%
Feels like
18°F
Dew Point
21°F
2 AM
24°F
10%
4mph
SW
Cloudy
Humidity
90%
Feels like
18°F
Dew Point
21°F
3 AM
24°F
10%
5mph
SW
Cloudy
Humidity
89%
Feels like
18°F
Dew Point
21°F
4 AM
24°F
10%
5mph
SW
Mostly Cloudy
Humidity
89%
Feels like
18°F
Dew Point
22°F
5 AM
24°F
10%
6mph
WSW
Mostly Cloudy
Humidity
89%
Feels like
17°F
Dew Point
22°F
6 AM
24°F
10%
7mph
WSW
Cloudy
Humidity
90%
Feels like
17°F
Dew Point
22°F
7 AM
25°F
10%
7mph
WSW
Cloudy
Humidity
89%
Feels like
17°F
Dew Point
22°F
7:22 AM
8 AM
26°F
10%
8mph
WSW
Mostly Cloudy
Humidity
85%
Feels like
18°F
Dew Point
22°F
9 AM
27°F
0%
8mph
WSW
Mostly Cloudy
Humidity
80%
Feels like
19°F
Dew Point
22°F
10 AM
29°F
0%
9mph
W
Partly Cloudy
Humidity
76%
Feels like
20°F
Dew Point
22°F
11 AM
30°F
0%
10mph
W
Partly Cloudy
Humidity
72%
Feels like
21°F
Dew Point
22°F
12 PM
31°F
0%
10mph
W
Partly Cloudy
Humidity
69%
Feels like
22°F
Dew Point
22°F
1 PM
31°F
0%
11mph
W
Partly Cloudy
Humidity
67%
Feels like
23°F
Dew Point
22°F
2 PM
31°F
0%
10mph
W
Partly Cloudy
Humidity
67%
Feels like
23°F
Dew Point
22°F
3 PM
31°F
0%
9mph
W
Mostly Cloudy
Humidity
68%
Feels like
23°F
Dew Point
22°F
4 PM
30°F
0%
8mph
W
Cloudy
Humidity
69%
Feels like
23°F
Dew Point
22°F
4:45 PM
5 PM
29°F
0%
8mph
W
Cloudy
Humidity
72%
Feels like
22°F
Dew Point
21°F
6 PM
28°F
0%
8mph
W
Cloudy
Humidity
75%
Feels like
20°F
Dew Point
21°F
7 PM
26°F
0%
8mph
W
Cloudy
Humidity
78%
Feels like
18°F
Dew Point
21°F
8 PM
26°F
0%
8mph
W
Cloudy
Humidity
80%
Feels like
18°F
Dew Point
20°F
9 PM
26°F
10%
8mph
W
Cloudy
Humidity
81%
Feels like
17°F
Dew Point
20°F
10 PM
25°F
10%
7mph
W
Cloudy
Humidity
81%
Feels like
17°F
Dew Point
20°F
11 PM
25°F
20%
7mph
WSW
Cloudy
Humidity
82%
Feels like
17°F
Dew Point
21°F

Snow and ice forecast through Thursday A.M.

Snow Barrels Across the Northern U.S.

Low pressure will produce a swath of snow from Minnesota to Maine into Thursday.

Rainfall Forecast for Northwest through Thursday

Heavy Rain, Flooding Soaks The Northwest

Wednesday's Weather Outlook

Wednesday'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