Hourly Weather Forecast - St. Marys, Ontario, CA

12 AM
18°F
20%
9mph
WNW
Mostly Clear
Humidity
79%
Feels like
8°F
Dew Point
13°F
1 AM
18°F
20%
8mph
W
Partly Cloudy
Humidity
79%
Feels like
8°F
Dew Point
13°F
2 AM
18°F
20%
7mph
W
Partly Cloudy
Humidity
81%
Feels like
8°F
Dew Point
13°F
3 AM
18°F
20%
7mph
W
Partly Cloudy
Humidity
84%
Feels like
8°F
Dew Point
14°F
4 AM
18°F
20%
7mph
W
Partly Cloudy
Humidity
85%
Feels like
8°F
Dew Point
14°F
5 AM
17°F
20%
7mph
WSW
Partly Cloudy
Humidity
88%
Feels like
8°F
Dew Point
14°F
6 AM
17°F
20%
7mph
WSW
Partly Cloudy
Humidity
87%
Feels like
8°F
Dew Point
14°F
7 AM
17°F
20%
7mph
WSW
Partly Cloudy
Humidity
81%
Feels like
8°F
Dew Point
12°F
7:53 AM
8 AM
18°F
20%
7mph
SW
Partly Cloudy
Humidity
79%
Feels like
8°F
Dew Point
12°F
9 AM
19°F
10%
7mph
SW
Mostly Sunny
Humidity
77%
Feels like
10°F
Dew Point
13°F
10 AM
21°F
10%
8mph
SW
Sunny
Humidity
78%
Feels like
11°F
Dew Point
15°F
11 AM
22°F
10%
9mph
SW
Sunny
Humidity
75%
Feels like
13°F
Dew Point
16°F
12 PM
24°F
10%
9mph
SW
Sunny
Humidity
74%
Feels like
15°F
Dew Point
17°F
1 PM
25°F
20%
9mph
SW
Sunny
Humidity
71%
Feels like
16°F
Dew Point
17°F
2 PM
26°F
30%
9mph
SW
30% Chance of Heavy Snow
Humidity
72%
Feels like
16°F
Dew Point
18°F
3 PM
26°F
30%
9mph
SSW
30% Chance of Heavy Snow
Humidity
74%
Feels like
17°F
Dew Point
19°F
4 PM
26°F
30%
9mph
SSW
30% Chance of Heavy Snow
Humidity
76%
Feels like
17°F
Dew Point
20°F
4:52 PM
5 PM
26°F
30%
9mph
SSW
30 % Chance of Heavy Snow
Humidity
78%
Feels like
16°F
Dew Point
20°F
6 PM
25°F
30%
9mph
S
30 % Chance of Heavy Snow
Humidity
80%
Feels like
16°F
Dew Point
20°F
7 PM
25°F
30%
9mph
S
30 % Chance of Heavy Snow
Humidity
88%
Feels like
15°F
Dew Point
22°F
8 PM
25°F
30%
9mph
S
30 % Chance of Heavy Snow
Humidity
86%
Feels like
16°F
Dew Point
21°F
9 PM
25°F
30%
9mph
S
30 % Chance of Heavy Snow
Humidity
85%
Feels like
16°F
Dew Point
21°F
10 PM
25°F
30%
9mph
S
30 % Chance of Heavy Snow
Humidity
85%
Feels like
16°F
Dew Point
22°F
11 PM
26°F
30%
10mph
S
30% Chance of Flurries
Humidity
87%
Feels like
16°F
Dew Point
22°F

Forecast Peak Wind Gusts Today

High Winds, Rain, and Snow Cross the Country

A clipper moving over the Great Lakes brings rain, snow, and high winds through the Atlantic Coastline.

Rainfall and Snowfall Totals Through Friday

Atmospheric River Symptoms Repeat in the Northwest

Friday's Weather Outlook

Friday's Weather Outlook

Friday's Weather Outlook

Weekend Weather Preview

Flu Update Valid For Week Ending December 6, 2025

Weekly Flu Update: Flu Exceeds Annual Baseline

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

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