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

12 AM
17°F
0%
6mph
W
Partly Cloudy
Humidity
92%
Feels like
8°F
Dew Point
15°F
1 AM
15°F
0%
6mph
W
Partly Cloudy
Humidity
89%
Feels like
6°F
Dew Point
13°F
2 AM
14°F
0%
6mph
W
Partly Cloudy
Humidity
93%
Feels like
5°F
Dew Point
12°F
3 AM
13°F
0%
5mph
WSW
Foggy
Humidity
100%
Feels like
4°F
Dew Point
13°F
4 AM
12°F
0%
4mph
WSW
Foggy
Humidity
100%
Feels like
4°F
Dew Point
12°F
5 AM
11°F
0%
4mph
SW
Foggy
Humidity
100%
Feels like
5°F
Dew Point
11°F
6 AM
12°F
0%
4mph
SSW
Foggy
Humidity
100%
Feels like
5°F
Dew Point
12°F
7 AM
13°F
0%
4mph
S
Foggy
Humidity
100%
Feels like
5°F
Dew Point
13°F
7:58 AM
8 AM
15°F
0%
5mph
S
Foggy
Humidity
100%
Feels like
7°F
Dew Point
15°F
9 AM
18°F
0%
7mph
SSW
Foggy
Humidity
100%
Feels like
8°F
Dew Point
18°F
10 AM
20°F
30%
9mph
SSW
30% Chance of Snow
Humidity
100%
Feels like
10°F
Dew Point
20°F
11 AM
23°F
30%
11mph
SSW
30% Chance of Snow
Humidity
100%
Feels like
12°F
Dew Point
23°F
12 PM
25°F
10%
13mph
SSW
Foggy
Humidity
100%
Feels like
14°F
Dew Point
25°F
1 PM
27°F
10%
16mph
SSW
Cloudy
Humidity
94%
Feels like
15°F
Dew Point
26°F
2 PM
28°F
10%
17mph
SSW
Cloudy
Humidity
93%
Feels like
16°F
Dew Point
26°F
3 PM
29°F
10%
17mph
SSW
Cloudy
Humidity
96%
Feels like
17°F
Dew Point
28°F
4 PM
29°F
0%
17mph
SSW
Cloudy
Humidity
93%
Feels like
17°F
Dew Point
27°F
4:35 PM
5 PM
29°F
0%
17mph
SSW
Cloudy
Humidity
90%
Feels like
17°F
Dew Point
26°F
6 PM
29°F
0%
18mph
SSW
Cloudy
Humidity
92%
Feels like
17°F
Dew Point
27°F
7 PM
29°F
0%
18mph
SSW
Cloudy
Humidity
95%
Feels like
17°F
Dew Point
28°F
8 PM
30°F
10%
18mph
SSW
Cloudy
Humidity
93%
Feels like
18°F
Dew Point
28°F
9 PM
31°F
10%
18mph
SSW
Cloudy
Humidity
93%
Feels like
19°F
Dew Point
29°F
10 PM
31°F
10%
17mph
SSW
Cloudy
Humidity
93%
Feels like
20°F
Dew Point
30°F
11 PM
32°F
10%
17mph
SSW
Cloudy
Humidity
94%
Feels like
21°F
Dew Point
30°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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