Hourly Weather Forecast - Copper Cliff, Ontario, CA

12 AM
28°F
10%
6mph
S
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
1 AM
28°F
10%
6mph
S
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
2 AM
28°F
10%
7mph
S
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
3 AM
27°F
20%
7mph
S
Foggy
Humidity
100%
Feels like
20°F
Dew Point
27°F
4 AM
27°F
20%
6mph
S
Foggy
Humidity
100%
Feels like
20°F
Dew Point
27°F
5 AM
28°F
20%
6mph
SSE
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
6 AM
28°F
20%
6mph
SE
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
7 AM
28°F
20%
7mph
ESE
Foggy
Humidity
100%
Feels like
21°F
Dew Point
28°F
8 AM
29°F
20%
7mph
ESE
Foggy
Humidity
100%
Feels like
22°F
Dew Point
29°F
8:06 AM
9 AM
29°F
20%
7mph
ESE
Foggy
Humidity
100%
Feels like
22°F
Dew Point
29°F
10 AM
30°F
30%
7mph
SE
30% Chance Freezing Rain
Humidity
100%
Feels like
23°F
Dew Point
30°F
11 AM
31°F
30%
8mph
SE
30% Chance Freezing Rain
Humidity
100%
Feels like
23°F
Dew Point
31°F
12 PM
31°F
30%
8mph
SSE
30% Chance Freezing Rain
Humidity
100%
Feels like
24°F
Dew Point
31°F
1 PM
32°F
30%
9mph
S
30% Chance Freezing Rain
Humidity
100%
Feels like
24°F
Dew Point
32°F
2 PM
32°F
30%
9mph
S
30% Chance Freezing Rain
Humidity
100%
Feels like
25°F
Dew Point
32°F
3 PM
32°F
30%
8mph
S
30% Chance Freezing Rain
Humidity
100%
Feels like
25°F
Dew Point
32°F
4 PM
32°F
30%
8mph
S
30% Chance Freezing Rain
Humidity
100%
Feels like
25°F
Dew Point
32°F
4:42 PM
5 PM
31°F
30%
8mph
S
30% Chance Freezing Rain
Humidity
100%
Feels like
24°F
Dew Point
31°F
6 PM
31°F
20%
8mph
S
Foggy
Humidity
100%
Feels like
24°F
Dew Point
31°F
7 PM
31°F
20%
8mph
S
Foggy
Humidity
100%
Feels like
24°F
Dew Point
31°F
8 PM
32°F
20%
8mph
S
Foggy
Humidity
100%
Feels like
24°F
Dew Point
32°F
9 PM
32°F
20%
8mph
SSW
Foggy
Humidity
100%
Feels like
24°F
Dew Point
32°F
10 PM
31°F
20%
9mph
SSW
Foggy
Humidity
100%
Feels like
24°F
Dew Point
31°F
11 PM
31°F
30%
8mph
SSW
30% Chance Frozen Mix
Humidity
100%
Feels like
24°F
Dew Point
31°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

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

NOAA, NCDC

White Christmas? What Are The Odds

Weekend Weather Outlook

Weekend 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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