Hourly Weather Forecast - Saint Marys, PA

12 AM
36°F
20%
11mph
WSW
Cloudy
Humidity
61%
Feels like
28°F
Dew Point
23°F
1 AM
35°F
20%
12mph
WSW
Cloudy
Humidity
65%
Feels like
27°F
Dew Point
25°F
2 AM
34°F
20%
12mph
WSW
Partly Cloudy
Humidity
70%
Feels like
25°F
Dew Point
25°F
3 AM
33°F
10%
12mph
WSW
Mostly Clear
Humidity
75%
Feels like
23°F
Dew Point
26°F
4 AM
31°F
10%
12mph
W
Clear
Humidity
78%
Feels like
21°F
Dew Point
25°F
5 AM
29°F
10%
12mph
W
Clear
Humidity
80%
Feels like
19°F
Dew Point
24°F
6 AM
28°F
10%
12mph
W
Clear
Humidity
78%
Feels like
18°F
Dew Point
22°F
7 AM
28°F
10%
13mph
W
Mostly Clear
Humidity
75%
Feels like
17°F
Dew Point
21°F
7:36 AM
8 AM
28°F
10%
13mph
W
Partly Cloudy
Humidity
73%
Feels like
17°F
Dew Point
20°F
9 AM
28°F
10%
14mph
W
Mostly Cloudy
Humidity
71%
Feels like
16°F
Dew Point
20°F
10 AM
28°F
0%
15mph
W
Cloudy
Humidity
68%
Feels like
16°F
Dew Point
19°F
11 AM
27°F
0%
16mph
W
Cloudy
Humidity
65%
Feels like
15°F
Dew Point
17°F
12 PM
26°F
10%
16mph
W
Cloudy
Humidity
63%
Feels like
14°F
Dew Point
16°F
1 PM
25°F
10%
16mph
W
Mostly Cloudy
Humidity
62%
Feels like
13°F
Dew Point
14°F
2 PM
24°F
20%
16mph
WNW
Mostly Cloudy
Humidity
63%
Feels like
11°F
Dew Point
13°F
3 PM
23°F
30%
15mph
WNW
30% Chance Snow Showers
Humidity
64%
Feels like
10°F
Dew Point
12°F
4 PM
22°F
20%
15mph
WNW
Partly Cloudy
Humidity
65%
Feels like
8°F
Dew Point
11°F
4:47 PM
5 PM
20°F
10%
14mph
WNW
Mostly Clear
Humidity
65%
Feels like
7°F
Dew Point
11°F
6 PM
20°F
10%
13mph
WNW
Mostly Clear
Humidity
66%
Feels like
7°F
Dew Point
10°F
7 PM
20°F
10%
13mph
WNW
Mostly Clear
Humidity
68%
Feels like
7°F
Dew Point
11°F
8 PM
19°F
10%
13mph
WNW
Mostly Clear
Humidity
69%
Feels like
6°F
Dew Point
11°F
9 PM
19°F
10%
12mph
WNW
Mostly Clear
Humidity
70%
Feels like
6°F
Dew Point
11°F
10 PM
18°F
10%
12mph
WNW
Partly Cloudy
Humidity
71%
Feels like
6°F
Dew Point
11°F
11 PM
18°F
30%
11mph
WNW
30% Chance Snow Showers
Humidity
73%
Feels like
5°F
Dew Point
11°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday'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 person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

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

Cold Air Damming - Cause And Effects

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