Hourly Weather Forecast - Mercersburg, PA

7:24 PM
8 PM
57°F
0%
1mph
E
Partly Cloudy
Humidity
57%
Feels like
57°F
Dew Point
42°F
9 PM
55°F
0%
2mph
ESE
Partly Cloudy
Humidity
62%
Feels like
55°F
Dew Point
42°F
10 PM
53°F
0%
2mph
ESE
Partly Cloudy
Humidity
66%
Feels like
53°F
Dew Point
42°F
11 PM
52°F
0%
2mph
SE
Partly Cloudy
Humidity
69%
Feels like
52°F
Dew Point
42°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?

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide