Hourly Weather Forecast - Pittsburgh, Ontario, CA

12 AM
19°F
0%
10mph
WNW
Partly Cloudy
Humidity
65%
Feels like
8°F
Dew Point
10°F
1 AM
18°F
0%
9mph
W
Partly Cloudy
Humidity
65%
Feels like
7°F
Dew Point
8°F
2 AM
18°F
0%
8mph
W
Mostly Clear
Humidity
64%
Feels like
7°F
Dew Point
8°F
3 AM
17°F
0%
7mph
W
Partly Cloudy
Humidity
64%
Feels like
7°F
Dew Point
7°F
4 AM
17°F
0%
6mph
W
Mostly Cloudy
Humidity
64%
Feels like
8°F
Dew Point
7°F
5 AM
17°F
0%
6mph
W
Partly Cloudy
Humidity
65%
Feels like
9°F
Dew Point
7°F
6 AM
17°F
0%
4mph
WNW
Mostly Clear
Humidity
66%
Feels like
10°F
Dew Point
7°F
7 AM
17°F
0%
3mph
W
Clear
Humidity
67%
Feels like
12°F
Dew Point
8°F
7:37 AM
8 AM
18°F
10%
2mph
WSW
Mostly Sunny
Humidity
67%
Feels like
18°F
Dew Point
9°F
9 AM
20°F
10%
3mph
SSW
Partly Cloudy
Humidity
67%
Feels like
15°F
Dew Point
10°F
10 AM
21°F
10%
5mph
S
Partly Cloudy
Humidity
67%
Feels like
15°F
Dew Point
12°F
11 AM
23°F
10%
6mph
S
Mostly Cloudy
Humidity
68%
Feels like
15°F
Dew Point
14°F
12 PM
25°F
10%
8mph
S
Mostly Cloudy
Humidity
71%
Feels like
16°F
Dew Point
17°F
1 PM
27°F
10%
9mph
S
Cloudy
Humidity
72%
Feels like
18°F
Dew Point
19°F
2 PM
28°F
10%
10mph
S
Mostly Cloudy
Humidity
73%
Feels like
19°F
Dew Point
20°F
3 PM
29°F
10%
10mph
S
Mostly Cloudy
Humidity
73%
Feels like
19°F
Dew Point
21°F
4 PM
29°F
20%
11mph
SSE
Mostly Cloudy
Humidity
73%
Feels like
20°F
Dew Point
22°F
4:28 PM
5 PM
30°F
40%
11mph
S
40% Chance of Flurries
Humidity
72%
Feels like
20°F
Dew Point
22°F
6 PM
30°F
50%
11mph
S
50% Chance of Flurries
Humidity
71%
Feels like
21°F
Dew Point
22°F
7 PM
30°F
40%
12mph
S
40% Chance of Flurries
Humidity
71%
Feels like
21°F
Dew Point
22°F
8 PM
31°F
50%
12mph
S
50% Chance of Flurries
Humidity
71%
Feels like
22°F
Dew Point
23°F
9 PM
32°F
60%
12mph
SSW
60% Chance of Flurries
Humidity
71%
Feels like
23°F
Dew Point
24°F
10 PM
33°F
60%
12mph
SSW
60% Chance of Flurries
Humidity
72%
Feels like
24°F
Dew Point
25°F
11 PM
33°F
60%
11mph
SSW
60% Chance of Flurries
Humidity
77%
Feels like
25°F
Dew Point
27°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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