Hourly Weather Forecast - Grantham, PA

12 AM
27°F
40%
5mph
SW
40% Chance Freezing Rain
Humidity
66%
Feels like
21°F
Dew Point
17°F
1 AM
26°F
40%
6mph
WSW
40% Chance Frozen Mix
Humidity
69%
Feels like
20°F
Dew Point
18°F
2 AM
26°F
30%
6mph
WSW
30% Chance Frozen Mix
Humidity
72%
Feels like
19°F
Dew Point
18°F
3 AM
25°F
30%
6mph
W
30% Chance of Flurries
Humidity
75%
Feels like
18°F
Dew Point
18°F
4 AM
25°F
30%
7mph
W
30% Chance of Flurries
Humidity
77%
Feels like
17°F
Dew Point
19°F
5 AM
24°F
30%
7mph
W
30% Chance of Flurries
Humidity
79%
Feels like
16°F
Dew Point
19°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

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Snow & Ski Forecast

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