Hourly Weather Forecast - Greencastle, PA

12 AM
26°F
0%
13mph
WNW
Mostly Clear
Humidity
53%
Feels like
14°F
Dew Point
11°F
1 AM
25°F
0%
12mph
WNW
Mostly Clear
Humidity
55%
Feels like
14°F
Dew Point
11°F
2 AM
24°F
0%
12mph
WNW
Mostly Clear
Humidity
57%
Feels like
13°F
Dew Point
11°F
3 AM
24°F
0%
11mph
NW
Mostly Clear
Humidity
58%
Feels like
13°F
Dew Point
11°F
4 AM
23°F
0%
11mph
NW
Mostly Clear
Humidity
60%
Feels like
12°F
Dew Point
12°F
5 AM
23°F
0%
10mph
NW
Mostly Clear
Humidity
63%
Feels like
13°F
Dew Point
12°F
6 AM
23°F
0%
9mph
SSW
Mostly Clear
Humidity
64%
Feels like
13°F
Dew Point
13°F
7 AM
24°F
0%
9mph
SSE
Mostly Clear
Humidity
65%
Feels like
15°F
Dew Point
14°F
7:28 AM
8 AM
25°F
0%
8mph
S
Mostly Sunny
Humidity
62%
Feels like
17°F
Dew Point
14°F
9 AM
27°F
0%
8mph
S
Sunny
Humidity
58%
Feels like
19°F
Dew Point
15°F
10 AM
29°F
10%
9mph
S
Sunny
Humidity
55%
Feels like
21°F
Dew Point
15°F
11 AM
31°F
10%
9mph
S
Mostly Sunny
Humidity
51%
Feels like
23°F
Dew Point
15°F
12 PM
33°F
10%
10mph
S
Partly Cloudy
Humidity
49%
Feels like
24°F
Dew Point
16°F
1 PM
34°F
10%
11mph
S
Mostly Cloudy
Humidity
47%
Feels like
26°F
Dew Point
16°F
2 PM
35°F
10%
11mph
S
Mostly Cloudy
Humidity
47%
Feels like
28°F
Dew Point
17°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

Monday's Weather Outlook

Monday'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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