Hourly Weather Forecast - Saint Marys, PA

12 AM
20°F
30%
14mph
W
30% Chance Snow Showers
Humidity
75%
Feels like
7°F
Dew Point
13°F
1 AM
19°F
20%
13mph
W
Partly Cloudy
Humidity
77%
Feels like
6°F
Dew Point
13°F
2 AM
19°F
10%
12mph
W
Partly Cloudy
Humidity
79%
Feels like
6°F
Dew Point
13°F
3 AM
18°F
0%
10mph
W
Partly Cloudy
Humidity
82%
Feels like
6°F
Dew Point
13°F
4 AM
17°F
0%
9mph
W
Partly Cloudy
Humidity
86%
Feels like
6°F
Dew Point
14°F
5 AM
16°F
0%
7mph
W
Partly Cloudy
Humidity
90%
Feels like
6°F
Dew Point
14°F
6 AM
16°F
0%
6mph
WSW
Partly Cloudy
Humidity
91%
Feels like
6°F
Dew Point
13°F
7 AM
16°F
0%
5mph
SW
Partly Cloudy
Humidity
88%
Feels like
8°F
Dew Point
13°F
7:36 AM
8 AM
18°F
0%
5mph
SW
Partly Cloudy
Humidity
84%
Feels like
10°F
Dew Point
14°F
9 AM
20°F
0%
5mph
SSW
Partly Cloudy
Humidity
78%
Feels like
13°F
Dew Point
15°F
10 AM
23°F
0%
6mph
SSW
Partly Cloudy
Humidity
71%
Feels like
16°F
Dew Point
15°F
11 AM
25°F
0%
6mph
S
Partly Cloudy
Humidity
65%
Feels like
18°F
Dew Point
15°F
12 PM
27°F
0%
7mph
S
Partly Cloudy
Humidity
61%
Feels like
20°F
Dew Point
16°F
1 PM
29°F
0%
7mph
S
Partly Cloudy
Humidity
60%
Feels like
22°F
Dew Point
17°F
2 PM
30°F
0%
8mph
S
Mostly Cloudy
Humidity
59%
Feels like
23°F
Dew Point
18°F
3 PM
31°F
0%
8mph
S
Mostly Cloudy
Humidity
59%
Feels like
24°F
Dew Point
19°F
4 PM
32°F
0%
8mph
S
Mostly Cloudy
Humidity
57%
Feels like
25°F
Dew Point
19°F
4:47 PM
5 PM
32°F
0%
9mph
S
Mostly Cloudy
Humidity
57%
Feels like
25°F
Dew Point
19°F
6 PM
33°F
0%
9mph
S
Partly Cloudy
Humidity
58%
Feels like
25°F
Dew Point
19°F
7 PM
33°F
10%
9mph
S
Partly Cloudy
Humidity
62%
Feels like
26°F
Dew Point
21°F
8 PM
33°F
30%
9mph
S
30% Chance Snow Showers
Humidity
62%
Feels like
26°F
Dew Point
22°F
9 PM
34°F
30%
9mph
SSW
30% Chance of Flurries
Humidity
59%
Feels like
26°F
Dew Point
21°F
10 PM
34°F
30%
9mph
SW
30% Chance of Flurries
Humidity
58%
Feels like
27°F
Dew Point
21°F
11 PM
35°F
30%
10mph
SW
30% Chance of Flurries
Humidity
58%
Feels like
27°F
Dew Point
22°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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