Hourly Weather Forecast - Grantham, PA

12 AM
32°F
0%
4mph
WNW
Partly Cloudy
Humidity
86%
Feels like
29°F
Dew Point
28°F
1 AM
31°F
0%
5mph
WNW
Partly Cloudy
Humidity
82%
Feels like
27°F
Dew Point
27°F
2 AM
31°F
0%
6mph
NW
Partly Cloudy
Humidity
79%
Feels like
25°F
Dew Point
25°F
3 AM
30°F
0%
6mph
NW
Partly Cloudy
Humidity
75%
Feels like
24°F
Dew Point
23°F
4 AM
29°F
0%
7mph
NW
Mostly Cloudy
Humidity
71%
Feels like
22°F
Dew Point
21°F
5 AM
28°F
0%
7mph
NNW
Mostly Cloudy
Humidity
69%
Feels like
20°F
Dew Point
19°F
6 AM
26°F
0%
7mph
NNW
Mostly Cloudy
Humidity
68%
Feels like
19°F
Dew Point
17°F
7 AM
26°F
0%
7mph
NNW
Partly Cloudy
Humidity
65%
Feels like
18°F
Dew Point
15°F
7:17 AM
8 AM
25°F
0%
7mph
N
Mostly Cloudy
Humidity
61%
Feels like
18°F
Dew Point
14°F
9 AM
26°F
0%
8mph
N
Cloudy
Humidity
57%
Feels like
17°F
Dew Point
12°F
10 AM
26°F
0%
8mph
N
Cloudy
Humidity
52%
Feels like
17°F
Dew Point
11°F
11 AM
26°F
0%
8mph
N
Cloudy
Humidity
49%
Feels like
18°F
Dew Point
10°F
12 PM
26°F
0%
7mph
N
Cloudy
Humidity
46%
Feels like
19°F
Dew Point
9°F
1 PM
27°F
0%
7mph
N
Cloudy
Humidity
44%
Feels like
19°F
Dew Point
8°F
2 PM
27°F
0%
6mph
N
Cloudy
Humidity
44%
Feels like
20°F
Dew Point
8°F
3 PM
26°F
0%
5mph
N
Cloudy
Humidity
45%
Feels like
20°F
Dew Point
8°F
4 PM
25°F
0%
4mph
N
Cloudy
Humidity
46%
Feels like
20°F
Dew Point
8°F
4:42 PM
5 PM
24°F
0%
4mph
N
Mostly Cloudy
Humidity
48%
Feels like
20°F
Dew Point
8°F
6 PM
24°F
0%
3mph
N
Mostly Clear
Humidity
50%
Feels like
20°F
Dew Point
8°F
7 PM
23°F
0%
2mph
N
Clear
Humidity
51%
Feels like
23°F
Dew Point
8°F
8 PM
22°F
0%
2mph
NNE
Clear
Humidity
53%
Feels like
22°F
Dew Point
8°F
9 PM
21°F
0%
1mph
NNE
Mostly Clear
Humidity
55%
Feels like
21°F
Dew Point
8°F
10 PM
21°F
0%
1mph
NNE
Mostly Clear
Humidity
56%
Feels like
21°F
Dew Point
8°F
11 PM
20°F
0%
1mph
NNE
Partly Cloudy
Humidity
58%
Feels like
20°F
Dew Point
8°F

Snowfall Forecast Through Tonight

Snow To Impact the Rockies This Weekend

A winter storm continues across the Cascades and northern Rockies today through tonight causing periods of moderate to heavy snow.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

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

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Image courtesy of PeakPX.

Top 10 Winter Energy Saving Tips

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide