Hourly Weather Forecast - Nepean, Ontario, CA

11 AM
18°F
0%
9mph
WSW
Mostly Cloudy
Humidity
79%
Feels like
7°F
Dew Point
12°F
12 PM
20°F
0%
9mph
WSW
Mostly Cloudy
Humidity
74%
Feels like
9°F
Dew Point
13°F
1 PM
21°F
10%
9mph
SW
Mostly Cloudy
Humidity
72%
Feels like
10°F
Dew Point
13°F
2 PM
21°F
10%
9mph
SW
Mostly Cloudy
Humidity
73%
Feels like
11°F
Dew Point
14°F
3 PM
21°F
10%
9mph
SSW
Mostly Cloudy
Humidity
72%
Feels like
11°F
Dew Point
13°F
4 PM
20°F
10%
9mph
SSW
Mostly Cloudy
Humidity
73%
Feels like
10°F
Dew Point
13°F
4:21 PM
5 PM
19°F
0%
9mph
SSW
Cloudy
Humidity
76%
Feels like
8°F
Dew Point
12°F
6 PM
18°F
30%
9mph
SSW
30% Chance of Snow
Humidity
79%
Feels like
8°F
Dew Point
13°F
7 PM
18°F
0%
9mph
SW
Cloudy
Humidity
90%
Feels like
7°F
Dew Point
16°F
8 PM
18°F
0%
9mph
SW
Mostly Cloudy
Humidity
90%
Feels like
7°F
Dew Point
15°F
9 PM
18°F
0%
10mph
SW
Mostly Cloudy
Humidity
88%
Feels like
6°F
Dew Point
15°F
10 PM
17°F
0%
10mph
WSW
Mostly Cloudy
Humidity
87%
Feels like
5°F
Dew Point
14°F
11 PM
16°F
0%
10mph
SW
Mostly Cloudy
Humidity
88%
Feels like
4°F
Dew Point
13°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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