Hourly Weather Forecast - Perth, Ontario, CA

4 PM
35°F
70%
11mph
WNW
70% Chance Frozen Mix
Humidity
79%
Feels like
26°F
Dew Point
29°F
4:24 PM
5 PM
33°F
70%
10mph
WNW
70% Chance Frozen Mix
Humidity
79%
Feels like
25°F
Dew Point
27°F
6 PM
31°F
10%
9mph
NW
Mostly Clear
Humidity
79%
Feels like
23°F
Dew Point
25°F
7 PM
29°F
0%
7mph
NW
Mostly Clear
Humidity
78%
Feels like
22°F
Dew Point
23°F
8 PM
26°F
0%
5mph
NW
Mostly Clear
Humidity
79%
Feels like
19°F
Dew Point
20°F
9 PM
22°F
0%
4mph
WNW
Mostly Clear
Humidity
81%
Feels like
18°F
Dew Point
18°F
10 PM
20°F
0%
2mph
W
Clear
Humidity
83%
Feels like
20°F
Dew Point
15°F
11 PM
18°F
0%
1mph
SW
Mostly Clear
Humidity
84%
Feels like
18°F
Dew Point
14°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

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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