Hourly Weather Forecast - Mercersburg, PA

2 AM
27°F
0%
11mph
W
Partly Cloudy
Humidity
77%
Feels like
17°F
Dew Point
21°F
3 AM
26°F
70%
11mph
W
70% Chance Snow Showers
Humidity
70%
Feels like
16°F
Dew Point
18°F
4 AM
26°F
0%
11mph
W
Partly Cloudy
Humidity
71%
Feels like
15°F
Dew Point
17°F
5 AM
25°F
0%
10mph
W
Partly Cloudy
Humidity
68%
Feels like
15°F
Dew Point
16°F
6 AM
25°F
0%
10mph
W
Mostly Clear
Humidity
67%
Feels like
15°F
Dew Point
15°F
7 AM
25°F
0%
9mph
W
Mostly Clear
Humidity
67%
Feels like
15°F
Dew Point
15°F
7:20 AM
8 AM
26°F
0%
9mph
W
Mostly Sunny
Humidity
66%
Feels like
17°F
Dew Point
16°F
9 AM
27°F
0%
9mph
W
Partly Cloudy
Humidity
63%
Feels like
18°F
Dew Point
17°F
10 AM
29°F
0%
10mph
W
Partly Cloudy
Humidity
58%
Feels like
21°F
Dew Point
17°F
11 AM
31°F
0%
10mph
W
Mostly Cloudy
Humidity
52%
Feels like
22°F
Dew Point
16°F
12 PM
32°F
0%
10mph
W
Mostly Cloudy
Humidity
49%
Feels like
24°F
Dew Point
15°F
1 PM
33°F
10%
9mph
W
Mostly Cloudy
Humidity
46%
Feels like
25°F
Dew Point
15°F
2 PM
34°F
10%
9mph
W
Mostly Cloudy
Humidity
43%
Feels like
26°F
Dew Point
13°F
3 PM
34°F
30%
9mph
W
30% Chance of Snow
Humidity
44%
Feels like
26°F
Dew Point
14°F
4 PM
34°F
30%
10mph
W
30% Chance of Snow
Humidity
44%
Feels like
26°F
Dew Point
14°F
5 PM
33°F
30%
9mph
W
30% Chance of Snow
Humidity
42%
Feels like
25°F
Dew Point
13°F
6 PM
32°F
30%
9mph
WNW
30% Chance of Snow
Humidity
44%
Feels like
24°F
Dew Point
13°F
7 PM
30°F
10%
7mph
WNW
Mostly Cloudy
Humidity
47%
Feels like
23°F
Dew Point
13°F
7:20 PM
8 PM
29°F
0%
6mph
WNW
Partly Cloudy
Humidity
51%
Feels like
23°F
Dew Point
13°F
9 PM
28°F
0%
6mph
WNW
Mostly Cloudy
Humidity
55%
Feels like
22°F
Dew Point
14°F
10 PM
27°F
0%
5mph
WNW
Mostly Cloudy
Humidity
51%
Feels like
21°F
Dew Point
11°F
11 PM
26°F
0%
4mph
WNW
Partly Cloudy
Humidity
52%
Feels like
21°F
Dew Point
11°F

Today's Severe Weather Outlook

Dangerous Storms Rumble Through Mid-Atlantic

Dangerous storms will quickly dart through the Mid-Atlantic this evening.

Snow Forecast Through Tuesday Evening

Snow, High Winds Plague Great Lakes With Blizzard Conditions

Tuesday's Weather Outlook

Today's Weather Outlook

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

Weekly Drought Map for March 12, 2026

Widespread Drought Improvement For The South, Midwest

Blizzard: Its True Definition

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