Hourly Weather Forecast - Mercersburg, PA

12 AM
26°F
0%
9mph
W
Mostly Clear
Humidity
52%
Feels like
18°F
Dew Point
11°F
1 AM
26°F
0%
8mph
W
Clear
Humidity
53%
Feels like
18°F
Dew Point
11°F
2 AM
26°F
0%
8mph
W
Clear
Humidity
52%
Feels like
17°F
Dew Point
10°F
3 AM
25°F
0%
8mph
W
Mostly Clear
Humidity
51%
Feels like
17°F
Dew Point
10°F
4 AM
25°F
0%
7mph
W
Partly Cloudy
Humidity
51%
Feels like
17°F
Dew Point
10°F
5 AM
25°F
0%
7mph
WSW
Partly Cloudy
Humidity
52%
Feels like
17°F
Dew Point
10°F
6 AM
25°F
0%
6mph
WSW
Partly Cloudy
Humidity
50%
Feels like
17°F
Dew Point
9°F
7 AM
26°F
0%
6mph
WSW
Partly Cloudy
Humidity
49%
Feels like
18°F
Dew Point
9°F
7:32 AM
8 AM
27°F
0%
7mph
WSW
Partly Cloudy
Humidity
48%
Feels like
20°F
Dew Point
10°F
9 AM
29°F
0%
8mph
WSW
Partly Cloudy
Humidity
45%
Feels like
22°F
Dew Point
11°F
10 AM
32°F
0%
9mph
WSW
Mostly Cloudy
Humidity
45%
Feels like
24°F
Dew Point
13°F
11 AM
33°F
0%
10mph
WSW
Mostly Cloudy
Humidity
45%
Feels like
25°F
Dew Point
14°F
12 PM
35°F
0%
11mph
WSW
Mostly Cloudy
Humidity
45%
Feels like
27°F
Dew Point
16°F
1 PM
36°F
0%
11mph
W
Mostly Cloudy
Humidity
45%
Feels like
28°F
Dew Point
17°F
2 PM
37°F
0%
11mph
W
Cloudy
Humidity
44%
Feels like
29°F
Dew Point
17°F
3 PM
37°F
0%
11mph
WSW
Cloudy
Humidity
42%
Feels like
29°F
Dew Point
16°F
4 PM
36°F
0%
10mph
WSW
Cloudy
Humidity
43%
Feels like
29°F
Dew Point
16°F
4:56 PM
5 PM
35°F
10%
9mph
WSW
Cloudy
Humidity
47%
Feels like
28°F
Dew Point
17°F
6 PM
33°F
10%
7mph
W
Mostly Cloudy
Humidity
51%
Feels like
27°F
Dew Point
17°F
7 PM
32°F
10%
6mph
W
Mostly Cloudy
Humidity
59%
Feels like
26°F
Dew Point
19°F
8 PM
31°F
10%
6mph
W
Mostly Cloudy
Humidity
60%
Feels like
25°F
Dew Point
19°F
9 PM
30°F
10%
6mph
W
Mostly Cloudy
Humidity
60%
Feels like
24°F
Dew Point
18°F
10 PM
29°F
10%
6mph
W
Mostly Cloudy
Humidity
60%
Feels like
22°F
Dew Point
17°F
11 PM
28°F
10%
6mph
W
Mostly Cloudy
Humidity
58%
Feels like
22°F
Dew Point
15°F

Snow Forecast Through Monday

Powerful Winter Storm Taking Shape Across the Upper Midwest

A major winter storm is taking aim at the Upper Midwest and Great Lakes.

Snow and Ice Forecast through Saturday

Heavy Snow, Dangerous Icy Mix Eye Mid-Atlantic to New England

Saturday's Weather Outlook

Weekend Weather Outlook

Photos and videos from the Palisades Fire that started in the City of Los Angeles, January 8, 2025. (CAL FIRE_Official via Wikimedia Commons)

2025 Year in Review: Billion Dollar Disasters - The California Wildfires

Hurricane Erick at its peak intensity before making landfall on Guerrero, Mexico on June 19, 2025 (NOAA/Wikimedia Commons)

2025 Year in Review: Active Tropical Season for The Pacific

Christmas Tree via Pixabay

How Drought Impacts Your Christmas Trees

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide