Hourly Weather Forecast - Alton, Ontario, CA

12 AM
18°F
10%
5mph
NE
Cloudy
Humidity
84%
Feels like
10°F
Dew Point
14°F
1 AM
18°F
10%
5mph
ENE
Cloudy
Humidity
86%
Feels like
11°F
Dew Point
14°F
2 AM
19°F
10%
5mph
ENE
Cloudy
Humidity
86%
Feels like
12°F
Dew Point
15°F
3 AM
19°F
10%
5mph
ENE
Cloudy
Humidity
85%
Feels like
12°F
Dew Point
15°F
4 AM
19°F
10%
5mph
E
Cloudy
Humidity
86%
Feels like
12°F
Dew Point
15°F
5 AM
20°F
10%
6mph
E
Cloudy
Humidity
84%
Feels like
12°F
Dew Point
16°F
6 AM
20°F
10%
6mph
E
Cloudy
Humidity
83%
Feels like
12°F
Dew Point
16°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

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During Extreme Cold: Watch for Frostbite!

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

Watch vs. Warning

Flash Flood Watch and Warning Defined

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