Hourly Weather Forecast - Plympton-Wyoming, Ontario, CA

12 PM
19°F
70%
16mph
SSW
70% Chance of Heavy Snow
Humidity
77%
Feels like
4°F
Dew Point
13°F
1 PM
18°F
70%
17mph
SSW
70% Chance of Snow
Humidity
77%
Feels like
3°F
Dew Point
12°F
2 PM
18°F
10%
16mph
SSW
Mostly Cloudy
Humidity
77%
Feels like
3°F
Dew Point
11°F
3 PM
17°F
10%
15mph
SW
Mostly Cloudy
Humidity
75%
Feels like
2°F
Dew Point
11°F
4 PM
17°F
0%
15mph
SW
Partly Cloudy
Humidity
75%
Feels like
2°F
Dew Point
10°F
4:54 PM
5 PM
17°F
0%
14mph
SW
Partly Cloudy
Humidity
75%
Feels like
3°F
Dew Point
10°F
6 PM
16°F
0%
12mph
SW
Mostly Clear
Humidity
73%
Feels like
3°F
Dew Point
9°F
7 PM
16°F
0%
11mph
SW
Partly Cloudy
Humidity
76%
Feels like
3°F
Dew Point
10°F
8 PM
16°F
0%
11mph
SW
Mostly Cloudy
Humidity
75%
Feels like
3°F
Dew Point
9°F
9 PM
15°F
0%
10mph
SW
Partly Cloudy
Humidity
77%
Feels like
3°F
Dew Point
10°F
10 PM
15°F
0%
10mph
WSW
Partly Cloudy
Humidity
79%
Feels like
3°F
Dew Point
10°F
11 PM
15°F
0%
9mph
WSW
Partly Cloudy
Humidity
83%
Feels like
3°F
Dew Point
10°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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