Hourly Weather Forecast - Mercersburg, PA

1 PM
59°F
0%
3mph
N
Mostly Sunny
Humidity
51%
Feels like
59°F
Dew Point
41°F
2 PM
60°F
0%
2mph
NNE
Mostly Sunny
Humidity
47%
Feels like
60°F
Dew Point
40°F
3 PM
62°F
0%
2mph
NE
Mostly Sunny
Humidity
45%
Feels like
62°F
Dew Point
40°F
4 PM
63°F
0%
2mph
E
Mostly Sunny
Humidity
45%
Feels like
63°F
Dew Point
41°F
5 PM
63°F
0%
2mph
ESE
Partly Cloudy
Humidity
42%
Feels like
63°F
Dew Point
39°F
6 PM
61°F
0%
3mph
ESE
Partly Cloudy
Humidity
45%
Feels like
61°F
Dew Point
40°F
7 PM
58°F
0%
2mph
ESE
Partly Cloudy
Humidity
52%
Feels like
58°F
Dew Point
41°F
7:24 PM
8 PM
55°F
0%
2mph
ESE
Partly Cloudy
Humidity
56%
Feels like
55°F
Dew Point
40°F
9 PM
53°F
0%
2mph
SE
Mostly Clear
Humidity
60%
Feels like
53°F
Dew Point
40°F
10 PM
52°F
0%
2mph
SE
Mostly Clear
Humidity
64%
Feels like
52°F
Dew Point
40°F
11 PM
51°F
0%
2mph
SE
Partly Cloudy
Humidity
68%
Feels like
51°F
Dew Point
40°F

Today's High Temperature Outlook

Early Spring Heat Wave Zaps Southwest

Much of the Southwest will observe record-breaking heat through the weekend, with high temperatures reminiscent of mid-summer!

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

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

Strong Winds in the Springtime

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

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