Hourly Weather Forecast - Saint Clair, PA

12 AM
44°F
90%
9mph
SSE
Rain
Humidity
95%
Feels like
39°F
Dew Point
43°F
1 AM
46°F
90%
11mph
SSE
Rain
Humidity
94%
Feels like
41°F
Dew Point
45°F
2 AM
48°F
100%
13mph
SSE
Rain
Humidity
94%
Feels like
43°F
Dew Point
46°F
3 AM
49°F
100%
13mph
SSE
Rain
Humidity
94%
Feels like
44°F
Dew Point
47°F
4 AM
50°F
100%
13mph
S
Rain
Humidity
95%
Feels like
50°F
Dew Point
49°F
5 AM
51°F
100%
12mph
S
Rain
Humidity
94%
Feels like
51°F
Dew Point
50°F
6 AM
50°F
100%
11mph
SSW
Light Rain
Humidity
100%
Feels like
45°F
Dew Point
50°F
7 AM
48°F
90%
11mph
SW
Light Rain
Humidity
100%
Feels like
44°F
Dew Point
48°F
7:24 AM
8 AM
46°F
90%
11mph
WSW
Rain
Humidity
100%
Feels like
41°F
Dew Point
46°F
9 AM
46°F
70%
11mph
W
70% Chance Rain Showers
Humidity
91%
Feels like
41°F
Dew Point
44°F
10 AM
45°F
60%
11mph
W
60% Chance Rain Showers
Humidity
83%
Feels like
39°F
Dew Point
40°F
11 AM
43°F
50%
12mph
W
50% Chance Rain Showers
Humidity
75%
Feels like
37°F
Dew Point
36°F
12 PM
41°F
40%
13mph
W
40% Chance of Light Rain
Humidity
72%
Feels like
33°F
Dew Point
33°F
1 PM
39°F
30%
14mph
W
30% Chance of Light Rain
Humidity
68%
Feels like
31°F
Dew Point
29°F
2 PM
38°F
30%
15mph
W
30% Chance of Light Rain
Humidity
65%
Feels like
29°F
Dew Point
27°F
3 PM
35°F
20%
15mph
W
Partly Cloudy
Humidity
62%
Feels like
26°F
Dew Point
24°F
4 PM
33°F
10%
15mph
W
Partly Cloudy
Humidity
59%
Feels like
23°F
Dew Point
21°F
4:39 PM
5 PM
31°F
10%
15mph
W
Partly Cloudy
Humidity
58%
Feels like
21°F
Dew Point
18°F
6 PM
30°F
0%
15mph
W
Partly Cloudy
Humidity
57%
Feels like
19°F
Dew Point
16°F
7 PM
28°F
0%
14mph
W
Mostly Clear
Humidity
56%
Feels like
17°F
Dew Point
15°F
8 PM
28°F
0%
14mph
WNW
Mostly Clear
Humidity
56%
Feels like
16°F
Dew Point
14°F
9 PM
27°F
0%
14mph
WNW
Mostly Clear
Humidity
57%
Feels like
16°F
Dew Point
14°F
10 PM
26°F
0%
13mph
WNW
Mostly Clear
Humidity
58%
Feels like
15°F
Dew Point
14°F
11 PM
26°F
0%
13mph
WNW
Mostly Clear
Humidity
59%
Feels like
15°F
Dew Point
14°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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