Hourly Weather Forecast - Saint Clair, PA

12 AM
27°F
10%
1mph
WSW
Cloudy
Humidity
68%
Feels like
27°F
Dew Point
17°F
1 AM
26°F
10%
1mph
SW
Cloudy
Humidity
68%
Feels like
26°F
Dew Point
17°F
2 AM
26°F
10%
1mph
SW
Cloudy
Humidity
69%
Feels like
26°F
Dew Point
18°F
3 AM
26°F
20%
1mph
SSW
Cloudy
Humidity
71%
Feels like
26°F
Dew Point
18°F
4 AM
26°F
20%
1mph
SSW
Cloudy
Humidity
71%
Feels like
26°F
Dew Point
19°F
5 AM
27°F
20%
2mph
S
Cloudy
Humidity
71%
Feels like
27°F
Dew Point
19°F
6 AM
27°F
30%
2mph
S
30% Chance of Flurries
Humidity
71%
Feels like
27°F
Dew Point
19°F
7 AM
28°F
30%
2mph
S
30% Chance of Flurries
Humidity
72%
Feels like
28°F
Dew Point
20°F
7:26 AM
8 AM
29°F
30%
4mph
S
30% Chance of Flurries
Humidity
72%
Feels like
25°F
Dew Point
21°F
9 AM
30°F
30%
4mph
S
30% Chance of Flurries
Humidity
71%
Feels like
26°F
Dew Point
22°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

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

Wednesday's Weather Outlook

Today'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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