Hourly Weather Forecast - Mechanicsburg, PA

12 AM
40°F
20%
1mph
S
Cloudy
Humidity
94%
Feels like
40°F
Dew Point
39°F
1 AM
41°F
20%
1mph
S
Cloudy
Humidity
93%
Feels like
41°F
Dew Point
39°F
2 AM
42°F
20%
1mph
S
Cloudy
Humidity
92%
Feels like
42°F
Dew Point
40°F
3 AM
42°F
20%
2mph
S
Cloudy
Humidity
92%
Feels like
42°F
Dew Point
40°F
4 AM
43°F
30%
2mph
SSW
30% Chance of Light Rain
Humidity
91%
Feels like
43°F
Dew Point
41°F
5 AM
44°F
40%
3mph
SSW
40% Chance of Light Rain
Humidity
91%
Feels like
44°F
Dew Point
41°F
6 AM
44°F
50%
3mph
SSW
50% Chance of Light Rain
Humidity
91%
Feels like
43°F
Dew Point
42°F
7 AM
45°F
50%
3mph
SSW
50% Chance of Light Rain
Humidity
93%
Feels like
44°F
Dew Point
43°F
7:29 AM
8 AM
46°F
50%
3mph
SW
50% Chance of Light Rain
Humidity
92%
Feels like
45°F
Dew Point
44°F
9 AM
47°F
40%
4mph
SW
40% Chance of Light Rain
Humidity
92%
Feels like
46°F
Dew Point
45°F
10 AM
49°F
50%
4mph
SW
50% Chance of Light Rain
Humidity
91%
Feels like
47°F
Dew Point
46°F
11 AM
49°F
60%
4mph
WSW
60% Chance of Light Rain
Humidity
93%
Feels like
48°F
Dew Point
47°F
12 PM
50°F
60%
4mph
W
60% Chance of Light Rain
Humidity
93%
Feels like
48°F
Dew Point
48°F
1 PM
50°F
50%
5mph
WNW
50% Chance of Light Rain
Humidity
93%
Feels like
50°F
Dew Point
48°F
2 PM
50°F
40%
5mph
WNW
40% Chance of Light Rain
Humidity
91%
Feels like
50°F
Dew Point
48°F
3 PM
50°F
30%
5mph
WNW
30% Chance Rain Showers
Humidity
89%
Feels like
50°F
Dew Point
47°F
4 PM
50°F
30%
5mph
NW
30% Chance Rain Showers
Humidity
88%
Feels like
48°F
Dew Point
46°F
4:48 PM
5 PM
49°F
30%
5mph
NW
30% Chance Rain Showers
Humidity
86%
Feels like
47°F
Dew Point
45°F
6 PM
49°F
30%
6mph
NW
30% Chance Rain Showers
Humidity
81%
Feels like
46°F
Dew Point
43°F
7 PM
48°F
30%
7mph
NW
30% Chance Rain Showers
Humidity
78%
Feels like
45°F
Dew Point
42°F
8 PM
47°F
30%
6mph
NW
30% Chance Rain Showers
Humidity
76%
Feels like
43°F
Dew Point
39°F
9 PM
44°F
30%
6mph
NW
30% Chance Rain Showers
Humidity
77%
Feels like
41°F
Dew Point
37°F
10 PM
43°F
30%
6mph
NNW
30% Chance Rain Showers
Humidity
76%
Feels like
39°F
Dew Point
36°F
11 PM
41°F
10%
5mph
NNW
Mostly Cloudy
Humidity
76%
Feels like
38°F
Dew Point
34°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

Sunday's Weather Outlook

Sunday'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

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