ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

7:53 PM PDT JUN 21, 2026
Few Clouds
73°F
Feels Like: 73°F
Dewpoint: 55°F
Rel. Hum.: 53%
Visibility: 10 miles
Wind: WSW at 10 mph
Pressure: 29.86 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows 52 to 57. Areas of winds west 10 to 15 mph this evening becoming light.
MONDAY
Mostly sunny. Warmer. Highs 85 to 94. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon.
MONDAY NIGHT
Mostly clear. Lows 56 to 61. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 90 to 98. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon.
TUESDAY NIGHT
Partly cloudy. Lows 61 to 67. Areas of winds west 10 to 15 mph in the evening becoming light.
WEDNESDAY
Partly cloudy. Highs 91 to 99.
WEDNESDAY NIGHT
Mostly clear. Lows 60 to 65.
THURSDAY
Mostly sunny. Highs 87 to 94.
THURSDAY NIGHT
Mostly clear. Lows 57 to 61.
FRIDAY
Mostly sunny. Highs 85 to 92.
FRIDAY NIGHT
Clear. Lows 54 to 59.
SATURDAY
Mostly sunny. Highs 81 to 88.
SATURDAY NIGHT
Mostly clear. Lows 53 to 58.

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  6/21/2026
Sunday
21 JUN 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 70° 70° Clear 0%

0% Thunder
( 0% severe)
WSW   7 59% 55°
High 80° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 78° 79° Clear WSW   10 43% 54°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 79° 80° Clear 0%

0% Thunder
( 0% severe)
WSW   13 44% 55°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 72° 72° Clear WSW   10 55% 55°
Monday
22 JUN 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 64° 64° Clear 0%

0% Thunder
( 0% severe)
WSW   8 73% 55°
Low 58° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 61° 61° Partly Cloudy W   5 81% 55°
High 87° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 59° 60° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 87% 55°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 63° 64° Partly Cloudy   CALM 75% 55°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 74° 74° Clear 0%

0% Thunder
( 0% severe)
SW   6 51% 55°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 83° 82° Clear WSW   10 37% 54°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 84° 83° Clear 0%

0% Thunder
( 0% severe)
WSW   13 37% 55°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 75° 75° Clear WSW   12 52% 56°
Tuesday
23 JUN 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 11 PM 67° 67° Clear 0%

0% Thunder
( 0% severe)
WSW   8 65% 55°
Low 61° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 2 AM 64° 65° Clear WSW   3 70% 54°
High 92° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 5 AM 62° 63° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 72% 53°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 8 AM 66° 66° Partly Cloudy   CALM 65% 54°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 11 AM 78° 79° Clear 1%

0% Thunder
( 0% severe)
SW   8 43% 54°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 2 PM 88° 86° Clear WSW   10 29% 52°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 5 PM 88° 86° Clear     WSW   12 31% 54°

ONTARIO, CA extended weather forecast

Wednesday
24 JUN 2026
Thursday
25 JUN 2026
Friday
26 JUN 2026
Saturday
27 JUN 2026
Sunday
28 JUN 2026
Low 66° Low 63° Low 62° Low 61° Low 66°
High 97° High 94° High 93° High 88° High 88°
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
Partly Cloudy
6% Rain
Partly Cloudy
3% Rain
Partly Cloudy
2% Rain
Partly Cloudy
2% Rain
Partly Cloudy
6% Rain
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