ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

6:53 PM PDT OCT 12, 2026
Broken Clouds
61°F
Feels Like: 60°F
Dewpoint: 50°F
Rel. Hum.: 67%
Visibility: 10 miles
Wind: W at 9 mph
Pressure: 29.90 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly cloudy with a chance of showers this evening, then partly cloudy with a slight chance of showers overnight. Cooler. Lows 45 to 50. Areas of winds southwest to 10 mph this evening becoming light. Chance of measurable precipitation 50 percent.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 67 to 72. Light winds.
TUESDAY NIGHT
Mostly clear. Lows 46 to 50. Areas of winds northeast to 10 mph.
WEDNESDAY
Sunny, warmer. Highs 75 to 81. Areas of winds north to 10 mph.
WEDNESDAY NIGHT
Clear. Lows 52 to 56. Areas of winds northeast 10 to 20 mph. Gusts to 30 mph...becoming 35 mph overnight.
THURSDAY
Sunny. Highs 81 to 88.
THURSDAY NIGHT
Clear, breezy. Lows 57 to 63.
FRIDAY
Sunny. Highs 82 to 89.
FRIDAY NIGHT
Clear, windy. Lows 59 to 64.
SATURDAY
Sunny. Highs 81 to 90.
SATURDAY NIGHT
Clear. Lows 57 to 62.
SUNDAY
Sunny. Highs 83 to 89.
SUNDAY NIGHT
Clear. Lows 57 to 62.

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  5:00 AM PDT 10/12/2026
Monday
12 OCT 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 60° 59° Mostly Cloudy 71%
RAIN
>2 in
0% Thunder
( 6% severe)
WSW   8 87% 56°
High 64° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 63° 62° Mostly Cloudy WSW   9 67% 52°
Mostly Cloudy

Rain Likely

ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 62° 61° Partly Cloudy 19%
RAIN
.01–.1 in
0% Thunder
( 4% severe)
WSW   9 72% 53°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 59° 59° Partly Cloudy SW   5 80% 53°
Tuesday
13 OCT 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 56° 55° Partly Cloudy 2%

0% Thunder
( 2% severe)
WSW   6 93% 54°
Low 50° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 54° 52° Partly Cloudy N   7 96% 53°
High 71° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 52° 51° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNE   5 100% 52°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 53° 52° Partly Cloudy NE   5 96% 52°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 61° 62° Clear 0%

0% Thunder
( 0% severe)
  CALM 70% 51°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 69° 69° Clear   CALM 45% 47°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 69° 69° Clear 0%

0% Thunder
( 0% severe)
  CALM 45% 47°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 62° 62° Clear N   5 58% 47°
Wednesday
14 OCT 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 11 PM 57° 54° Clear 0%

0% Thunder
( 0% severe)
NNE   13 64% 45°
Low 52° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 2 AM 55° 52° Clear NNE   10 66% 44°
High 78° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 5 AM 54° 53° Clear 0%

0% Thunder
( 0% severe)
NNE   6 64% 42°

Clear



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 8 AM 55° 53° Clear NE   7 64% 43°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 11 AM 69° 69° Clear 0%

0% Thunder
( 0% severe)
  CALM 40% 44°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 2 PM 78° 78° Clear   CALM 28% 42°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 5 PM 76° 77° Clear       CALM 33% 45°

ONTARIO, CA extended weather forecast

Thursday
15 OCT 2026
Friday
16 OCT 2026
Saturday
17 OCT 2026
Sunday
18 OCT 2026
Monday
19 OCT 2026
Low 57° Low 63° Low 65° Low 59° Low 59°
High 90° High 92° High 90° High 87° High 82°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Clear
1% Rain
Clear
2% Rain
Clear
1% Rain
Clear
5% Rain
Clear
7% Rain
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