Hourly Weather Forecast - Waterdown, Ontario, CA

7 AM
24°F
0%
7mph
W
Mostly Cloudy
Humidity
57%
Feels like
16°F
Dew Point
11°F
7:48 AM
8 AM
24°F
70%
7mph
W
70% Chance Snow Showers
Humidity
58%
Feels like
16°F
Dew Point
12°F
9 AM
25°F
70%
8mph
W
70% Chance Snow Showers
Humidity
59%
Feels like
17°F
Dew Point
13°F
10 AM
26°F
0%
9mph
W
Mostly Cloudy
Humidity
57%
Feels like
17°F
Dew Point
13°F
11 AM
27°F
0%
9mph
W
Mostly Cloudy
Humidity
55%
Feels like
18°F
Dew Point
13°F
12 PM
27°F
30%
9mph
W
30% Chance of Snow
Humidity
55%
Feels like
18°F
Dew Point
13°F
1 PM
27°F
0%
9mph
W
Mostly Cloudy
Humidity
55%
Feels like
19°F
Dew Point
14°F
2 PM
28°F
0%
8mph
W
Partly Cloudy
Humidity
56%
Feels like
19°F
Dew Point
14°F
3 PM
28°F
0%
8mph
W
Mostly Cloudy
Humidity
59%
Feels like
20°F
Dew Point
15°F
4 PM
27°F
0%
7mph
W
Mostly Cloudy
Humidity
57%
Feels like
19°F
Dew Point
14°F
4:46 PM
5 PM
27°F
0%
6mph
W
Mostly Cloudy
Humidity
59%
Feels like
19°F
Dew Point
14°F
6 PM
26°F
0%
6mph
W
Partly Cloudy
Humidity
61%
Feels like
19°F
Dew Point
14°F
7 PM
26°F
0%
5mph
W
Partly Cloudy
Humidity
65%
Feels like
19°F
Dew Point
15°F
8 PM
25°F
0%
5mph
WSW
Partly Cloudy
Humidity
62%
Feels like
19°F
Dew Point
14°F
9 PM
25°F
0%
4mph
WSW
Partly Cloudy
Humidity
63%
Feels like
19°F
Dew Point
14°F
10 PM
24°F
0%
4mph
WSW
Partly Cloudy
Humidity
65%
Feels like
18°F
Dew Point
14°F
11 PM
23°F
0%
4mph
WSW
Mostly Clear
Humidity
66%
Feels like
18°F
Dew Point
13°F

Rain And Snow Totals Through Monday

Atmospheric River Impacts Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California through Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

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Today's Weather Outlook

Today's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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