Hourly Weather Forecast - Mercersburg, PA

12 AM
20°F
10%
3mph
WNW
Mostly Clear
Humidity
52%
Feels like
15°F
Dew Point
6°F
1 AM
20°F
10%
3mph
W
Mostly Clear
Humidity
53%
Feels like
15°F
Dew Point
5°F
2 AM
19°F
10%
3mph
W
Mostly Clear
Humidity
53%
Feels like
15°F
Dew Point
5°F
3 AM
19°F
0%
3mph
W
Mostly Clear
Humidity
54%
Feels like
19°F
Dew Point
5°F
4 AM
19°F
0%
3mph
W
Mostly Clear
Humidity
54%
Feels like
19°F
Dew Point
5°F
5 AM
18°F
10%
2mph
W
Mostly Clear
Humidity
56%
Feels like
18°F
Dew Point
5°F
6 AM
18°F
10%
2mph
W
Mostly Clear
Humidity
57%
Feels like
18°F
Dew Point
5°F
7 AM
18°F
10%
2mph
WSW
Mostly Clear
Humidity
57%
Feels like
18°F
Dew Point
6°F
7:29 AM
8 AM
19°F
10%
3mph
WSW
Partly Cloudy
Humidity
52%
Feels like
14°F
Dew Point
5°F
9 AM
21°F
10%
4mph
WSW
Partly Cloudy
Humidity
48%
Feels like
15°F
Dew Point
5°F
10 AM
23°F
10%
5mph
WSW
Partly Cloudy
Humidity
45%
Feels like
16°F
Dew Point
5°F
11 AM
24°F
10%
6mph
WSW
Partly Cloudy
Humidity
44%
Feels like
17°F
Dew Point
6°F
12 PM
26°F
10%
7mph
SW
Mostly Cloudy
Humidity
43%
Feels like
18°F
Dew Point
6°F
1 PM
27°F
10%
7mph
SW
Cloudy
Humidity
42%
Feels like
19°F
Dew Point
6°F
2 PM
27°F
10%
8mph
SW
Cloudy
Humidity
40%
Feels like
19°F
Dew Point
6°F
3 PM
28°F
10%
8mph
WSW
Mostly Cloudy
Humidity
39%
Feels like
19°F
Dew Point
6°F
4 PM
28°F
10%
8mph
WSW
Mostly Cloudy
Humidity
38%
Feels like
20°F
Dew Point
5°F
5 PM
27°F
10%
7mph
WSW
Mostly Cloudy
Humidity
37%
Feels like
19°F
Dew Point
4°F
5:15 PM
6 PM
26°F
10%
6mph
WSW
Mostly Cloudy
Humidity
39%
Feels like
19°F
Dew Point
4°F
7 PM
25°F
10%
6mph
W
Mostly Cloudy
Humidity
42%
Feels like
18°F
Dew Point
5°F
8 PM
24°F
10%
6mph
W
Partly Cloudy
Humidity
45%
Feels like
17°F
Dew Point
6°F
9 PM
24°F
10%
6mph
W
Partly Cloudy
Humidity
49%
Feels like
17°F
Dew Point
7°F
10 PM
23°F
10%
6mph
W
Partly Cloudy
Humidity
50%
Feels like
16°F
Dew Point
7°F
11 PM
22°F
10%
6mph
W
Partly Cloudy
Humidity
49%
Feels like
14°F
Dew Point
6°F

Wednesday's Weather Outlook

Wednesday's Weather Outlook

It will be a tale of two seasons on Wednesday, with cold, wintry weather in the East and dry, spring-like weather in the West.

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

(Image provided by Pixabay.com)

Before a High Wind Event

Windchill chart

Dangers of Wind Chills

A snow-covered trail in Sparkill, N.Y. (H. Martinez, WeatherBug user)

Top Winter Hiking Destinations

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