Hourly Weather Forecast - St.-Charles, Ontario, CA

12 AM
20°F
0%
9mph
S
Mostly Cloudy
Humidity
96%
Feels like
10°F
Dew Point
19°F
1 AM
22°F
10%
10mph
S
Cloudy
Humidity
94%
Feels like
12°F
Dew Point
21°F
2 AM
25°F
10%
11mph
S
Cloudy
Humidity
97%
Feels like
14°F
Dew Point
24°F
3 AM
27°F
10%
12mph
S
Foggy
Humidity
99%
Feels like
17°F
Dew Point
27°F
4 AM
29°F
10%
14mph
S
Foggy
Humidity
100%
Feels like
19°F
Dew Point
29°F
5 AM
30°F
10%
15mph
S
Foggy
Humidity
100%
Feels like
19°F
Dew Point
30°F
6 AM
31°F
0%
16mph
S
Cloudy
Humidity
98%
Feels like
19°F
Dew Point
30°F
7 AM
31°F
10%
17mph
S
Cloudy
Humidity
95%
Feels like
20°F
Dew Point
29°F
8 AM
32°F
10%
17mph
S
Cloudy
Humidity
95%
Feels like
21°F
Dew Point
31°F
8:00 AM
9 AM
33°F
10%
18mph
S
Cloudy
Humidity
97%
Feels like
22°F
Dew Point
32°F
10 AM
34°F
30%
18mph
S
30% Chance of Light Rain
Humidity
96%
Feels like
23°F
Dew Point
33°F
11 AM
35°F
50%
18mph
S
50% Chance of Light Rain
Humidity
95%
Feels like
24°F
Dew Point
33°F
12 PM
36°F
70%
18mph
S
70% Chance of Light Rain
Humidity
95%
Feels like
25°F
Dew Point
34°F
1 PM
36°F
80%
18mph
S
80% Chance of Light Rain
Humidity
94%
Feels like
26°F
Dew Point
35°F
2 PM
37°F
90%
17mph
S
Light Rain
Humidity
94%
Feels like
27°F
Dew Point
35°F
3 PM
37°F
100%
17mph
S
Light Rain
Humidity
93%
Feels like
28°F
Dew Point
36°F
4 PM
37°F
100%
16mph
S
Light Rain
Humidity
92%
Feels like
28°F
Dew Point
35°F
4:36 PM
5 PM
37°F
100%
15mph
S
Light Rain
Humidity
90%
Feels like
27°F
Dew Point
34°F
6 PM
36°F
100%
14mph
S
Light Rain
Humidity
93%
Feels like
27°F
Dew Point
34°F
7 PM
35°F
80%
13mph
S
80% Chance of Snow
Humidity
92%
Feels like
26°F
Dew Point
33°F
8 PM
34°F
80%
12mph
S
80% Chance of Heavy Snow
Humidity
88%
Feels like
25°F
Dew Point
31°F
9 PM
34°F
80%
13mph
S
80% Chance of Heavy Snow
Humidity
89%
Feels like
25°F
Dew Point
31°F
10 PM
33°F
80%
12mph
S
80% Chance of Heavy Snow
Humidity
88%
Feels like
24°F
Dew Point
30°F
11 PM
32°F
80%
11mph
SSW
80% Chance of Heavy Snow
Humidity
89%
Feels like
24°F
Dew Point
29°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

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