Hourly Weather Forecast - Cliffcrest, Ontario, CA

12 AM
25°F
10%
5mph
NE
Mostly Clear
Humidity
75%
Feels like
18°F
Dew Point
18°F
1 AM
24°F
10%
5mph
NE
Mostly Clear
Humidity
78%
Feels like
19°F
Dew Point
19°F
2 AM
24°F
10%
4mph
NE
Mostly Clear
Humidity
80%
Feels like
18°F
Dew Point
19°F
3 AM
24°F
10%
4mph
NE
Partly Cloudy
Humidity
82%
Feels like
18°F
Dew Point
19°F
4 AM
24°F
10%
4mph
ENE
Partly Cloudy
Humidity
83%
Feels like
18°F
Dew Point
19°F
5 AM
24°F
10%
5mph
ENE
Partly Cloudy
Humidity
85%
Feels like
18°F
Dew Point
20°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

White Christmas? What Are The Odds

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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