ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

4:53 AM PST JAN 8, 2026
Broken Clouds
46°F
Feels Like: 46°F
Dewpoint: 45°F
Rel. Hum.: 96%
Visibility: 10 miles
Wind: Calm
Pressure: 30.01 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Partly cloudy this morning...becoming sunny. Highs 56 to 62. Areas of winds northwest 10 to 20 mph. Gusts to 30 mph... Becoming 35 mph this afternoon.
TONIGHT
Clear, colder. Lows 32 to 35 in wind sheltered areas to 35 to 42 in warmer locations. Areas of winds north 15 to 25 mph. Gusts to 35 mph...becoming 40 mph overnight.
FRIDAY
Mostly sunny. Areas of blowing dust in the afternoon. Highs 58 to 63. Areas of winds north 20 to 30 mph with gusts to 50 mph.
FRIDAY NIGHT
Clear. Lows 34 to 39 in wind sheltered areas to 38 to 45 in warmer locations. Areas of winds north 20 to 30 mph with gusts to 50 mph.
SATURDAY
Sunny. Highs 65 to 70. Areas of winds north 20 to 30 mph becoming east in the afternoon. Gusts to 45 mph.
SATURDAY NIGHT
Clear, breezy. Lows 40 to 48.
SUNDAY
Sunny. Highs 69 to 73.
SUNDAY NIGHT
Mostly clear. Lows 42 to 49.
MONDAY
Mostly sunny. Highs 71 to 75.
MONDAY NIGHT
Clear. Lows 44 to 51.
TUESDAY
Sunny. Highs 74 to 78.
TUESDAY NIGHT
Mostly clear. Lows 47 to 54.
WEDNESDAY
Mostly sunny. Highs 77 to 81.

Visible Weather Satellite
ONTARIO, CA 91758
Infrared Weather Satellite
ONTARIO, CA 91758
NEXRAD Weather Radar
ONTARIO, CA 91758

ONTARIO, CA 3 hourly weather forecast

weather forecast created  4:00 PM PST  1/ 7/2026
Thursday
8 JAN 2026
ONTARIO, CA 91758 weather forecast Day 1, 0 hours 10 PM 53° 52° Partly Cloudy 0%

0% Thunder
( 1% severe)
NE   5 80% 47°
Low 46° ONTARIO, CA 91758 weather forecast Day 1, 3 hours 1 AM 50° 50° Partly Cloudy NE   2 86% 46°
High 60° ONTARIO, CA 91758 weather forecast Day 1, 6 hours 4 AM 48° 47° Partly Cloudy 3%

0% Thunder
( 3% severe)
ENE   1 89% 45°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 1, 9 hours 7 AM 47° 46° Partly Cloudy N   2 86% 43°
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 10 AM 53° 51° Partly Cloudy 1%

0% Thunder
( 1% severe)
S   6 64% 41°
ONTARIO, CA 91758 weather forecast Day 1, 15 hours 1 PM 58° 56° Clear SSW   8 44% 36°
ONTARIO, CA 91758 weather forecast Day 1, 18 hours 4 PM 58° 56° Clear 0%

0% Thunder
( 0% severe)
NE   8 37% 32°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 7 PM 52° 49° Clear NE   8 43% 30°
Friday
9 JAN 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 10 PM 48° 44° Clear 0%

0% Thunder
( 0% severe)
NE   9 43% 27°
Low 40° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 1 AM 45° 40° Clear NE   9 41% 23°
High 62° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 4 AM 45° 40° Clear 0%

0% Thunder
( 0% severe)
NE   9 37% 21°

Clear



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 7 AM 43° 38° Clear NNE   8 38% 20°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 10 AM 53° 50° Partly Cloudy 0%

0% Thunder
( 0% severe)
NE   9 25% 19°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 1 PM 60° 58° Clear NNE   10 19% 19°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 4 PM 60° 58° Clear 0%

0% Thunder
( 0% severe)
NNE   10 21% 21°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 7 PM 53° 49° Clear NNE   12 32% 24°

ONTARIO, CA extended weather forecast

Saturday
10 JAN 2026
Sunday
11 JAN 2026
Monday
12 JAN 2026
Tuesday
13 JAN 2026
Wednesday
14 JAN 2026
Low 41° Low 42° Low 46° Low 47° Low 49°
High 70° High 76° High 77° High 78° High 80°
ONTARIO, CA 91758 weather forecast Day 3 ONTARIO, CA 91758 weather forecast Day 4 ONTARIO, CA 91758 weather forecast Day 5 ONTARIO, CA 91758 weather forecast Day 6 ONTARIO, CA 91758 weather forecast Day 7
Clear
1% Rain
Clear
1% Rain
Clear
2% Rain
Clear
1% Rain
Clear
3% Rain
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