Hourly Weather Forecast - St Marys, Ontario, CA

12 AM
18°F
30%
9mph
WNW
30% Chance Freezing Rain
Humidity
80%
Feels like
7°F
Dew Point
13°F
1 AM
18°F
30%
9mph
WNW
30% Chance Frozen Mix
Humidity
80%
Feels like
8°F
Dew Point
13°F
2 AM
18°F
20%
8mph
WNW
Mostly Clear
Humidity
82%
Feels like
8°F
Dew Point
13°F
3 AM
18°F
10%
8mph
W
Mostly Clear
Humidity
83%
Feels like
9°F
Dew Point
14°F
4 AM
19°F
10%
7mph
W
Partly Cloudy
Humidity
84%
Feels like
9°F
Dew Point
15°F
5 AM
19°F
10%
6mph
W
Partly Cloudy
Humidity
89%
Feels like
10°F
Dew Point
16°F
6 AM
18°F
10%
6mph
WSW
Mostly Cloudy
Humidity
92%
Feels like
9°F
Dew Point
16°F
7 AM
18°F
10%
6mph
WSW
Cloudy
Humidity
91%
Feels like
9°F
Dew Point
15°F
7:53 AM
8 AM
18°F
10%
6mph
WSW
Cloudy
Humidity
88%
Feels like
9°F
Dew Point
15°F
9 AM
19°F
10%
7mph
SW
Cloudy
Humidity
87%
Feels like
9°F
Dew Point
15°F
10 AM
20°F
10%
7mph
SW
Cloudy
Humidity
89%
Feels like
10°F
Dew Point
17°F
11 AM
21°F
10%
8mph
SW
Cloudy
Humidity
86%
Feels like
12°F
Dew Point
17°F
12 PM
22°F
10%
8mph
SW
Cloudy
Humidity
80%
Feels like
13°F
Dew Point
17°F
1 PM
23°F
10%
9mph
SW
Cloudy
Humidity
75%
Feels like
14°F
Dew Point
17°F
2 PM
24°F
10%
8mph
SSW
Cloudy
Humidity
73%
Feels like
15°F
Dew Point
16°F
3 PM
24°F
10%
8mph
SSW
Cloudy
Humidity
73%
Feels like
15°F
Dew Point
16°F
4 PM
24°F
10%
8mph
S
Cloudy
Humidity
74%
Feels like
15°F
Dew Point
17°F
4:52 PM
5 PM
23°F
20%
8mph
S
Cloudy
Humidity
76%
Feels like
14°F
Dew Point
17°F
6 PM
23°F
20%
8mph
SSE
Mostly Cloudy
Humidity
79%
Feels like
14°F
Dew Point
17°F
7 PM
22°F
20%
8mph
SSE
Mostly Cloudy
Humidity
81%
Feels like
13°F
Dew Point
18°F
8 PM
22°F
20%
8mph
SSE
Mostly Cloudy
Humidity
83%
Feels like
13°F
Dew Point
18°F
9 PM
22°F
20%
9mph
SSE
Cloudy
Humidity
82%
Feels like
13°F
Dew Point
18°F
10 PM
23°F
20%
9mph
SSE
Cloudy
Humidity
83%
Feels like
13°F
Dew Point
18°F
11 PM
23°F
30%
9mph
SSE
30% Chance of Flurries
Humidity
86%
Feels like
14°F
Dew Point
20°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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide