Hourly Weather Forecast - Greencastle, PA

10 AM
23°F
0%
19mph
NW
Partly Cloudy
Humidity
68%
Feels like
9°F
Dew Point
14°F
11 AM
22°F
0%
20mph
NW
Partly Cloudy
Humidity
63%
Feels like
7°F
Dew Point
12°F
12 PM
22°F
0%
21mph
NW
Windy
Humidity
60%
Feels like
6°F
Dew Point
10°F
1 PM
21°F
0%
21mph
NW
Windy
Humidity
57%
Feels like
5°F
Dew Point
8°F
2 PM
20°F
0%
21mph
NW
Windy
Humidity
55%
Feels like
3°F
Dew Point
6°F
3 PM
19°F
0%
21mph
NW
Windy
Humidity
54%
Feels like
2°F
Dew Point
5°F
4 PM
18°F
0%
21mph
NW
Windy
Humidity
55%
Feels like
1°F
Dew Point
5°F
4:47 PM
5 PM
18°F
0%
21mph
NW
Windy
Humidity
56%
Feels like
1°F
Dew Point
5°F
6 PM
17°F
0%
20mph
WNW
Mostly Clear
Humidity
58%
Feels like
1°F
Dew Point
5°F
7 PM
18°F
0%
20mph
WNW
Mostly Clear
Humidity
59%
Feels like
1°F
Dew Point
6°F
8 PM
17°F
0%
19mph
WNW
Mostly Clear
Humidity
61%
Feels like
1°F
Dew Point
6°F
9 PM
18°F
0%
19mph
NW
Mostly Clear
Humidity
61%
Feels like
2°F
Dew Point
7°F
10 PM
18°F
0%
18mph
NW
Partly Cloudy
Humidity
60%
Feels like
2°F
Dew Point
7°F
11 PM
18°F
0%
17mph
NW
Mostly Clear
Humidity
59%
Feels like
3°F
Dew Point
7°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Sunday Weather Outlook

Today's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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