Hourly Weather Forecast - St Marys, Ontario, CA

12 PM
17°F
70%
16mph
SW
70% Chance of Heavy Snow
Humidity
81%
Feels like
2°F
Dew Point
13°F
1 PM
17°F
70%
17mph
SW
70% Chance of Heavy Snow
Humidity
79%
Feels like
2°F
Dew Point
12°F
2 PM
17°F
30%
18mph
SW
30% Chance of Heavy Snow
Humidity
76%
Feels like
2°F
Dew Point
11°F
3 PM
17°F
10%
17mph
SW
Mostly Cloudy
Humidity
72%
Feels like
1°F
Dew Point
10°F
4 PM
17°F
10%
17mph
SW
Mostly Cloudy
Humidity
72%
Feels like
1°F
Dew Point
9°F
4:49 PM
5 PM
16°F
10%
16mph
SW
Mostly Cloudy
Humidity
73%
Feels like
0°F
Dew Point
9°F
6 PM
15°F
10%
14mph
SW
Mostly Cloudy
Humidity
77%
Feels like
0°F
Dew Point
9°F
7 PM
14°F
10%
13mph
WSW
Partly Cloudy
Humidity
80%
Feels like
0°F
Dew Point
9°F
8 PM
13°F
10%
12mph
WSW
Mostly Cloudy
Humidity
82%
Feels like
0°F
Dew Point
9°F
9 PM
13°F
10%
11mph
WSW
Mostly Cloudy
Humidity
82%
Feels like
-1°F
Dew Point
8°F
10 PM
12°F
10%
10mph
WSW
Mostly Cloudy
Humidity
82%
Feels like
-1°F
Dew Point
8°F
11 PM
12°F
0%
10mph
WSW
Mostly Cloudy
Humidity
82%
Feels like
-1°F
Dew Point
8°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday'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

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide