Hourly Weather Forecast - Nepean, Ontario, CA

12 AM
17°F
0%
10mph
SW
Mostly Cloudy
Humidity
87%
Feels like
5°F
Dew Point
13°F
1 AM
15°F
0%
9mph
SW
Mostly Cloudy
Humidity
86%
Feels like
4°F
Dew Point
12°F
2 AM
15°F
0%
9mph
SW
Mostly Cloudy
Humidity
84%
Feels like
3°F
Dew Point
11°F
3 AM
15°F
0%
8mph
SW
Partly Cloudy
Humidity
84%
Feels like
3°F
Dew Point
11°F
4 AM
14°F
0%
8mph
SW
Mostly Cloudy
Humidity
83%
Feels like
3°F
Dew Point
10°F
5 AM
13°F
0%
7mph
SW
Partly Cloudy
Humidity
84%
Feels like
2°F
Dew Point
9°F
6 AM
14°F
0%
7mph
SSW
Partly Cloudy
Humidity
77%
Feels like
4°F
Dew Point
8°F
7 AM
15°F
0%
7mph
SSW
Mostly Clear
Humidity
74%
Feels like
5°F
Dew Point
9°F
7:35 AM
8 AM
17°F
0%
7mph
SSW
Partly Cloudy
Humidity
71%
Feels like
7°F
Dew Point
9°F
9 AM
18°F
0%
7mph
SSW
Partly Cloudy
Humidity
75%
Feels like
8°F
Dew Point
11°F
10 AM
20°F
0%
8mph
SSW
Mostly Cloudy
Humidity
79%
Feels like
10°F
Dew Point
15°F
11 AM
22°F
0%
9mph
SSW
Partly Cloudy
Humidity
82%
Feels like
12°F
Dew Point
18°F
12 PM
24°F
0%
11mph
SSW
Mostly Cloudy
Humidity
81%
Feels like
13°F
Dew Point
19°F
1 PM
25°F
0%
12mph
SSW
Cloudy
Humidity
81%
Feels like
14°F
Dew Point
20°F
2 PM
26°F
0%
13mph
SSW
Cloudy
Humidity
83%
Feels like
14°F
Dew Point
21°F
3 PM
26°F
30%
13mph
SSW
30% Chance of Snow
Humidity
85%
Feels like
14°F
Dew Point
22°F
4 PM
25°F
0%
13mph
S
Cloudy
Humidity
85%
Feels like
14°F
Dew Point
22°F
4:21 PM
5 PM
25°F
0%
14mph
SSW
Cloudy
Humidity
87%
Feels like
14°F
Dew Point
22°F
6 PM
26°F
0%
14mph
SSW
Cloudy
Humidity
87%
Feels like
14°F
Dew Point
22°F
7 PM
26°F
10%
15mph
SSW
Cloudy
Humidity
87%
Feels like
14°F
Dew Point
23°F
8 PM
27°F
10%
15mph
SSW
Cloudy
Humidity
86%
Feels like
15°F
Dew Point
23°F
9 PM
27°F
10%
15mph
SSW
Cloudy
Humidity
84%
Feels like
15°F
Dew Point
23°F
10 PM
28°F
10%
16mph
SSW
Cloudy
Humidity
83%
Feels like
16°F
Dew Point
23°F
11 PM
29°F
10%
16mph
SSW
Cloudy
Humidity
85%
Feels like
17°F
Dew Point
25°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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