Hourly Weather Forecast - Greencastle, PA

12 AM
21°F
0%
4mph
SSW
Partly Cloudy
Humidity
65%
Feels like
16°F
Dew Point
11°F
1 AM
20°F
0%
3mph
SSW
Partly Cloudy
Humidity
65%
Feels like
15°F
Dew Point
10°F
2 AM
20°F
0%
3mph
SW
Partly Cloudy
Humidity
66%
Feels like
15°F
Dew Point
10°F
3 AM
19°F
0%
3mph
SW
Mostly Clear
Humidity
68%
Feels like
14°F
Dew Point
10°F
4 AM
18°F
0%
3mph
SW
Clear
Humidity
69%
Feels like
13°F
Dew Point
10°F
5 AM
17°F
0%
3mph
SW
Clear
Humidity
71%
Feels like
12°F
Dew Point
10°F
6 AM
18°F
0%
3mph
SW
Clear
Humidity
68%
Feels like
13°F
Dew Point
10°F
7 AM
20°F
0%
3mph
SW
Clear
Humidity
64%
Feels like
15°F
Dew Point
10°F
7:25 AM
8 AM
23°F
0%
3mph
SW
Sunny
Humidity
60%
Feels like
19°F
Dew Point
11°F
9 AM
26°F
0%
3mph
WSW
Sunny
Humidity
55%
Feels like
22°F
Dew Point
12°F
10 AM
29°F
0%
4mph
SW
Sunny
Humidity
50%
Feels like
24°F
Dew Point
12°F
11 AM
31°F
0%
5mph
SW
Sunny
Humidity
46%
Feels like
26°F
Dew Point
13°F
12 PM
33°F
0%
6mph
SW
Sunny
Humidity
44%
Feels like
28°F
Dew Point
13°F
1 PM
35°F
0%
7mph
SSW
Sunny
Humidity
42%
Feels like
28°F
Dew Point
14°F
2 PM
35°F
0%
8mph
SSW
Sunny
Humidity
43%
Feels like
29°F
Dew Point
15°F
3 PM
35°F
0%
7mph
S
Sunny
Humidity
45%
Feels like
29°F
Dew Point
15°F
4 PM
33°F
0%
7mph
S
Sunny
Humidity
48%
Feels like
27°F
Dew Point
16°F
4:47 PM
5 PM
32°F
0%
7mph
S
Clear
Humidity
51%
Feels like
26°F
Dew Point
16°F
6 PM
31°F
0%
7mph
SSE
Clear
Humidity
54%
Feels like
24°F
Dew Point
16°F
7 PM
30°F
0%
7mph
SSE
Clear
Humidity
56%
Feels like
23°F
Dew Point
16°F
8 PM
29°F
0%
7mph
S
Mostly Clear
Humidity
58%
Feels like
22°F
Dew Point
16°F
9 PM
28°F
0%
6mph
S
Partly Cloudy
Humidity
60%
Feels like
21°F
Dew Point
16°F
10 PM
28°F
0%
6mph
S
Mostly Cloudy
Humidity
61%
Feels like
21°F
Dew Point
16°F
11 PM
28°F
0%
6mph
S
Mostly Cloudy
Humidity
62%
Feels like
21°F
Dew Point
16°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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