Hourly Weather Forecast - Brethour, Ontario, CA

12 AM
20°F
40%
12mph
SW
40% Chance Frozen Mix
Humidity
80%
Feels like
8°F
Dew Point
15°F
1 AM
21°F
40%
12mph
WSW
40% Chance Frozen Mix
Humidity
81%
Feels like
9°F
Dew Point
16°F
2 AM
20°F
30%
12mph
WSW
30% Chance Frozen Mix
Humidity
81%
Feels like
8°F
Dew Point
16°F
3 AM
20°F
30%
12mph
WSW
30% Chance Frozen Mix
Humidity
80%
Feels like
8°F
Dew Point
15°F
4 AM
19°F
30%
12mph
WSW
30% Chance Frozen Mix
Humidity
80%
Feels like
7°F
Dew Point
14°F
5 AM
18°F
20%
13mph
W
Mostly Cloudy
Humidity
82%
Feels like
5°F
Dew Point
13°F
6 AM
17°F
20%
14mph
W
Mostly Cloudy
Humidity
83%
Feels like
3°F
Dew Point
13°F
7 AM
16°F
20%
15mph
W
Mostly Cloudy
Humidity
82%
Feels like
1°F
Dew Point
11°F
8 AM
15°F
20%
15mph
WNW
Mostly Cloudy
Humidity
79%
Feels like
-1°F
Dew Point
10°F
8:04 AM
9 AM
14°F
20%
15mph
WNW
Mostly Cloudy
Humidity
79%
Feels like
-1°F
Dew Point
9°F
10 AM
14°F
20%
16mph
WNW
Mostly Cloudy
Humidity
78%
Feels like
-1°F
Dew Point
9°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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