Hourly Weather Forecast - Chambersburg, PA

12 AM
41°F
10%
4mph
NNW
Mostly Cloudy
Humidity
77%
Feels like
38°F
Dew Point
34°F
1 AM
40°F
30%
4mph
N
30% Chance Rain Showers
Humidity
80%
Feels like
38°F
Dew Point
35°F
2 AM
40°F
30%
3mph
N
30% Chance Rain Showers
Humidity
80%
Feels like
39°F
Dew Point
35°F
3 AM
40°F
30%
3mph
N
30% Chance Rain Showers
Humidity
86%
Feels like
40°F
Dew Point
37°F
4 AM
40°F
30%
2mph
N
30% Chance Rain Showers
Humidity
87%
Feels like
40°F
Dew Point
37°F
5 AM
39°F
30%
2mph
NNE
30% Chance Rain Showers
Humidity
90%
Feels like
39°F
Dew Point
36°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California through Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Today's Weather Outlook

Today's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide