Hourly Weather Forecast - Perth, Ontario, CA

12 AM
17°F
0%
2mph
S
Mostly Clear
Humidity
85%
Feels like
17°F
Dew Point
13°F
1 AM
16°F
0%
2mph
SSE
Mostly Clear
Humidity
87%
Feels like
16°F
Dew Point
13°F
2 AM
17°F
0%
3mph
SSE
Mostly Clear
Humidity
88%
Feels like
12°F
Dew Point
14°F
3 AM
18°F
0%
4mph
S
Partly Cloudy
Humidity
90%
Feels like
12°F
Dew Point
16°F
4 AM
20°F
0%
5mph
S
Partly Cloudy
Humidity
90%
Feels like
13°F
Dew Point
18°F
5 AM
22°F
0%
5mph
S
Mostly Cloudy
Humidity
90%
Feels like
15°F
Dew Point
20°F
6 AM
26°F
0%
6mph
S
Mostly Cloudy
Humidity
86%
Feels like
19°F
Dew Point
22°F
7 AM
29°F
0%
6mph
S
Partly Cloudy
Humidity
84%
Feels like
22°F
Dew Point
24°F
7:37 AM
8 AM
31°F
0%
7mph
S
Partly Cloudy
Humidity
84%
Feels like
24°F
Dew Point
27°F
9 AM
32°F
0%
9mph
S
Mostly Cloudy
Humidity
85%
Feels like
24°F
Dew Point
28°F
10 AM
33°F
0%
10mph
S
Cloudy
Humidity
85%
Feels like
25°F
Dew Point
29°F
11 AM
35°F
0%
12mph
S
Mostly Cloudy
Humidity
82%
Feels like
26°F
Dew Point
30°F
12 PM
36°F
0%
13mph
S
Partly Cloudy
Humidity
78%
Feels like
28°F
Dew Point
30°F
1 PM
37°F
0%
13mph
S
Partly Cloudy
Humidity
75%
Feels like
28°F
Dew Point
29°F
2 PM
37°F
0%
14mph
S
Partly Cloudy
Humidity
73%
Feels like
29°F
Dew Point
29°F
3 PM
37°F
0%
14mph
S
Mostly Cloudy
Humidity
73%
Feels like
29°F
Dew Point
29°F
4 PM
37°F
0%
14mph
S
Mostly Cloudy
Humidity
72%
Feels like
28°F
Dew Point
29°F
4:25 PM
5 PM
37°F
0%
14mph
S
Partly Cloudy
Humidity
73%
Feels like
28°F
Dew Point
29°F
6 PM
36°F
10%
14mph
S
Mostly Clear
Humidity
75%
Feels like
27°F
Dew Point
29°F
7 PM
36°F
10%
14mph
S
Mostly Clear
Humidity
77%
Feels like
27°F
Dew Point
29°F
8 PM
35°F
10%
14mph
S
Mostly Clear
Humidity
79%
Feels like
26°F
Dew Point
29°F
9 PM
35°F
30%
14mph
S
30% Chance Rain Showers
Humidity
80%
Feels like
26°F
Dew Point
30°F
10 PM
35°F
30%
14mph
S
30% Chance Rain Showers
Humidity
83%
Feels like
26°F
Dew Point
31°F
11 PM
36°F
50%
14mph
S
50% Chance Rain Showers
Humidity
85%
Feels like
27°F
Dew Point
32°F

Rainfall and Snowfall Totals Through Thursday

Pineapple Express Slams Northwestern U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Today's Weather Outlook

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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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