Hourly Weather Forecast - Greencastle, PA

7:24 AM
8 AM
25°F
0%
16mph
NW
Partly Cloudy
Humidity
80%
Feels like
13°F
Dew Point
20°F
9 AM
25°F
0%
18mph
NW
Partly Cloudy
Humidity
74%
Feels like
11°F
Dew Point
18°F
10 AM
24°F
0%
20mph
NW
Partly Cloudy
Humidity
69%
Feels like
10°F
Dew Point
16°F
11 AM
24°F
0%
21mph
NW
Windy
Humidity
64%
Feels like
9°F
Dew Point
13°F
12 PM
23°F
0%
21mph
NW
Windy
Humidity
61%
Feels like
7°F
Dew Point
11°F
1 PM
22°F
0%
22mph
NW
Windy
Humidity
58%
Feels like
6°F
Dew Point
9°F
2 PM
21°F
0%
22mph
NW
Windy
Humidity
56%
Feels like
4°F
Dew Point
7°F
3 PM
20°F
0%
22mph
NW
Windy
Humidity
55%
Feels like
3°F
Dew Point
6°F
4 PM
19°F
0%
22mph
NW
Windy
Humidity
55%
Feels like
2°F
Dew Point
5°F
4:47 PM
5 PM
18°F
0%
21mph
NW
Windy
Humidity
56%
Feels like
2°F
Dew Point
5°F
6 PM
18°F
0%
21mph
WNW
Windy
Humidity
58%
Feels like
1°F
Dew Point
6°F
7 PM
18°F
0%
20mph
WNW
Windy
Humidity
59%
Feels like
1°F
Dew Point
6°F
8 PM
18°F
0%
19mph
WNW
Mostly Clear
Humidity
60%
Feels like
2°F
Dew Point
6°F
9 PM
18°F
0%
19mph
NW
Mostly Clear
Humidity
60%
Feels like
2°F
Dew Point
6°F
10 PM
18°F
0%
19mph
NW
Partly Cloudy
Humidity
61%
Feels like
2°F
Dew Point
7°F
11 PM
18°F
0%
18mph
NW
Partly Cloudy
Humidity
61%
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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