ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

5:53 PM PDT AUG 1, 2026
Clear
97°F
Feels Like: 96°F
Dewpoint: 57°F
Rel. Hum.: 27%
Visibility: 10 miles
Wind: WSW at 13 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 66 to 72. Areas of winds west to 10 mph this evening becoming light.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 98 to 105. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon.
SUNDAY NIGHT
Mostly clear. Lows 64 to 70. Areas of winds west to 10 mph with gusts to 25 mph in the evening becoming light.
MONDAY
Mostly sunny. Highs 95 to 102. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon.
MONDAY NIGHT
Clear. Lows 63 to 68. Areas of winds southwest to 10 mph in the evening becoming light.
TUESDAY
Mostly sunny. Highs 95 to 102.
TUESDAY NIGHT
Clear. Lows 62 to 68.
WEDNESDAY
Mostly sunny. Highs 94 to 102.
WEDNESDAY NIGHT
Clear. Lows 63 to 69.
THURSDAY
Mostly sunny. Highs 94 to 102.
THURSDAY NIGHT
Mostly clear. Lows 65 to 70.
FRIDAY
Mostly sunny. Highs 95 to 102.
FRIDAY NIGHT
Mostly clear. Lows 64 to 70.

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  8/ 1/2026
Saturday
1 AUG 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 90° 88° Clear 0%

0% Thunder
( 0% severe)
SW   3 31% 55°
High 101° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 100° 97° Clear WSW   9 19% 51°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 99° 97° Clear 0%

0% Thunder
( 0% severe)
WSW   13 21% 52°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 88° 87° Clear WSW   9 35% 57°
Sunday
2 AUG 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 79° 80° Clear 0%

0% Thunder
( 0% severe)
WSW   6 49% 58°
Low 71° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 75° 75° Clear WNW   6 54% 57°
High 101° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 72° 72° Clear 0%

0% Thunder
( 0% severe)
W   3 59% 57°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 76° 78° Partly Cloudy   CALM 52% 57°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 89° 87° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   5 30% 54°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 98° 95° Partly Cloudy WSW   10 21% 51°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 97° 94° Clear 0%

0% Thunder
( 0% severe)
WSW   12 21% 51°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 86° 85° Clear WSW   9 35% 55°
Monday
3 AUG 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 11 PM 78° 79° Clear 0%

0% Thunder
( 0% severe)
WSW   7 48% 57°
Low 71° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 2 AM 74° 74° Clear SW   7 55% 57°
High 99° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 5 AM 71° 71° Clear 0%

0% Thunder
( 0% severe)
W   5 61% 57°

Clear



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 8 AM 74° 74° Clear SSW   1 55% 57°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 11 AM 87° 85° Clear 0%

0% Thunder
( 0% severe)
SW   5 34% 55°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 2 PM 96° 94° Clear WSW   10 24% 53°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 5 PM 95° 93° Clear     WSW   13 25% 54°

ONTARIO, CA extended weather forecast

Tuesday
4 AUG 2026
Wednesday
5 AUG 2026
Thursday
6 AUG 2026
Friday
7 AUG 2026
Saturday
8 AUG 2026
Low 67° Low 66° Low 67° Low 67° Low 66°
High 97° High 99° High 95° High 92° High 92°
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
Clear
Clear
Partly Cloudy
1% Rain
Partly Cloudy
1% Rain
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