Hourly Weather Forecast - St Marys, Ontario, CA

12 AM
19°F
0%
6mph
SE
Clear
Humidity
64%
Feels like
11°F
Dew Point
9°F
1 AM
19°F
0%
6mph
SE
Clear
Humidity
66%
Feels like
11°F
Dew Point
10°F
2 AM
19°F
0%
6mph
SE
Mostly Clear
Humidity
69%
Feels like
11°F
Dew Point
11°F
3 AM
19°F
0%
5mph
SE
Partly Cloudy
Humidity
72%
Feels like
12°F
Dew Point
12°F
4 AM
19°F
0%
5mph
SE
Cloudy
Humidity
75%
Feels like
12°F
Dew Point
13°F
5 AM
19°F
0%
5mph
SE
Mostly Cloudy
Humidity
79%
Feels like
12°F
Dew Point
14°F
6 AM
20°F
0%
6mph
ESE
Partly Cloudy
Humidity
83%
Feels like
12°F
Dew Point
16°F
6:57 AM
7 AM
21°F
0%
6mph
ESE
Partly Cloudy
Humidity
85%
Feels like
13°F
Dew Point
17°F
8 AM
24°F
10%
7mph
ESE
Partly Cloudy
Humidity
83%
Feels like
16°F
Dew Point
19°F
9 AM
27°F
10%
7mph
ESE
Mostly Cloudy
Humidity
80%
Feels like
20°F
Dew Point
22°F
10 AM
30°F
10%
7mph
ESE
Cloudy
Humidity
78%
Feels like
23°F
Dew Point
24°F
11 AM
33°F
10%
8mph
ESE
Cloudy
Humidity
76%
Feels like
26°F
Dew Point
26°F
12 PM
35°F
10%
9mph
ESE
Cloudy
Humidity
75%
Feels like
28°F
Dew Point
28°F
1 PM
36°F
10%
9mph
ESE
Cloudy
Humidity
75%
Feels like
30°F
Dew Point
29°F
2 PM
37°F
20%
8mph
ESE
Cloudy
Humidity
77%
Feels like
31°F
Dew Point
30°F
3 PM
37°F
20%
7mph
ESE
Cloudy
Humidity
79%
Feels like
31°F
Dew Point
31°F
4 PM
37°F
30%
7mph
ESE
30% Chance of Flurries
Humidity
81%
Feels like
31°F
Dew Point
31°F
5 PM
36°F
40%
6mph
ESE
40% Chance of Flurries
Humidity
83%
Feels like
31°F
Dew Point
31°F
6 PM
35°F
50%
5mph
ESE
50% Chance of Flurries
Humidity
86%
Feels like
31°F
Dew Point
32°F
6:15 PM
7 PM
35°F
40%
5mph
E
40% Chance Frozen Mix
Humidity
88%
Feels like
30°F
Dew Point
31°F
8 PM
34°F
20%
4mph
E
Cloudy
Humidity
90%
Feels like
30°F
Dew Point
31°F
9 PM
33°F
10%
4mph
E
Cloudy
Humidity
91%
Feels like
29°F
Dew Point
31°F
10 PM
32°F
10%
4mph
E
Cloudy
Humidity
91%
Feels like
29°F
Dew Point
30°F
11 PM
31°F
10%
3mph
E
Cloudy
Humidity
91%
Feels like
29°F
Dew Point
29°F

Snow and Ice Accumulations through Tuesday AM

Wintry Disturbance Bisects U.S. Mid-Latitudes

A wintry disturbance will bring icing and light snow from the central Plains tonight through the Northeast on Tuesday.

Today's Weather Outlook

Monday's Weather Outlook

Weekly Drought Map for February 26, 2026

Widespread Drought Degradation For South, Southeast; Mixed Results Elsewhere

Debris flies through the air as howling winds accompanied by a line of storms approach the old Tarrant County Courthouse in downtown Fort Worth, Texas, on March 2, 2023. (Tom Fox/The Dallas Morning News via AP)

Lightning Season Rapidly Approaching: Best Safety Practices

Rocky Mountain National Park at day in December. (NPS Natural Resources/Wikimedia Commons)

Snowmelt and Flooding

U.S. Route 52 near St. Donatus between Bellevue and Dubuque, Iowa. (Tony Webster from Portland, Oregon)

Winter Weather Driving Safety Tips

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