Hourly Weather Forecast - Mercersburg, PA

2 AM
37°F
10%
3mph
N
Partly Cloudy
Humidity
82%
Feels like
34°F
Dew Point
32°F
3 AM
37°F
70%
4mph
N
70% Chance Rain Showers
Humidity
80%
Feels like
33°F
Dew Point
31°F
4 AM
36°F
70%
5mph
N
70% Chance of Light Rain
Humidity
78%
Feels like
31°F
Dew Point
30°F
5 AM
35°F
30%
6mph
N
30% Chance of Light Rain
Humidity
78%
Feels like
30°F
Dew Point
29°F
6 AM
34°F
30%
6mph
N
30% Chance Rain Showers
Humidity
78%
Feels like
29°F
Dew Point
28°F
6:45 AM
7 AM
34°F
20%
7mph
N
Partly Cloudy
Humidity
78%
Feels like
29°F
Dew Point
28°F
8 AM
35°F
10%
6mph
N
Partly Cloudy
Humidity
74%
Feels like
30°F
Dew Point
28°F
9 AM
36°F
10%
6mph
N
Partly Cloudy
Humidity
69%
Feels like
31°F
Dew Point
27°F
10 AM
38°F
10%
6mph
N
Partly Cloudy
Humidity
65%
Feels like
33°F
Dew Point
27°F
11 AM
39°F
0%
5mph
N
Partly Cloudy
Humidity
60%
Feels like
35°F
Dew Point
26°F
12 PM
40°F
0%
5mph
N
Partly Cloudy
Humidity
55%
Feels like
37°F
Dew Point
26°F
1 PM
42°F
0%
5mph
N
Partly Cloudy
Humidity
50%
Feels like
38°F
Dew Point
24°F
2 PM
43°F
0%
5mph
N
Partly Cloudy
Humidity
45%
Feels like
40°F
Dew Point
23°F
3 PM
44°F
0%
6mph
NNW
Partly Cloudy
Humidity
41%
Feels like
40°F
Dew Point
22°F
4 PM
43°F
0%
6mph
NNW
Sunny
Humidity
39%
Feels like
40°F
Dew Point
20°F
5 PM
42°F
0%
5mph
NNW
Sunny
Humidity
39%
Feels like
38°F
Dew Point
19°F
6 PM
39°F
0%
4mph
N
Sunny
Humidity
41%
Feels like
36°F
Dew Point
17°F
6:03 PM
7 PM
36°F
0%
3mph
N
Clear
Humidity
44%
Feels like
34°F
Dew Point
16°F
8 PM
35°F
0%
3mph
N
Clear
Humidity
45%
Feels like
32°F
Dew Point
15°F
9 PM
33°F
0%
3mph
N
Clear
Humidity
46%
Feels like
30°F
Dew Point
15°F
10 PM
32°F
0%
3mph
NNE
Clear
Humidity
47%
Feels like
29°F
Dew Point
14°F
11 PM
31°F
0%
3mph
NNE
Clear
Humidity
48%
Feels like
27°F
Dew Point
13°F

Sunday's Weather Outlook

Sunday's Weather Outlook

The first day of March will feature wintry weather in the Lower Midwest and parts of the Northeast.

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

Flooding Can Happen in the Winter Too!

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