Hourly Weather Forecast - Greencastle, PA

12 AM
23°F
10%
12mph
WNW
Partly Cloudy
Humidity
57%
Feels like
11°F
Dew Point
10°F
1 AM
22°F
10%
11mph
WNW
Partly Cloudy
Humidity
59%
Feels like
11°F
Dew Point
10°F
2 AM
21°F
10%
11mph
WNW
Partly Cloudy
Humidity
60%
Feels like
10°F
Dew Point
10°F
3 AM
21°F
10%
10mph
WNW
Partly Cloudy
Humidity
61%
Feels like
10°F
Dew Point
10°F
4 AM
21°F
10%
9mph
WNW
Mostly Clear
Humidity
62%
Feels like
10°F
Dew Point
10°F
5 AM
21°F
10%
9mph
WNW
Mostly Clear
Humidity
62%
Feels like
11°F
Dew Point
10°F
6 AM
21°F
10%
8mph
E
Clear
Humidity
62%
Feels like
11°F
Dew Point
10°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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