ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

6:53 PM PDT OCT 5, 2026
Scattered Clouds
91°F
Feels Like: 88°F
Dewpoint: 52°F
Rel. Hum.: 27%
Visibility: 10 miles
Wind: WSW at 9 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 67 to 73. Areas of winds east to 10 mph. Gusts to 25 mph this evening.
TUESDAY
Mostly sunny. Hot. Highs 98 to 104. Areas of winds east to 10 mph becoming southwest with gusts to 25 mph in the afternoon.
TUESDAY NIGHT
Mostly clear. Lows 67 to 72. Areas of winds east to 10 mph. Gusts to 25 mph in the evening.
WEDNESDAY
Mostly sunny. Hot. Highs 98 to 104. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear. Lows 66 to 71. Areas of winds southwest to 10 mph in the evening becoming light.
THURSDAY
Mostly sunny. Hot. Highs 97 to 102.
THURSDAY NIGHT
Clear. Lows 65 to 70.
FRIDAY
Sunny, hot. Highs 95 to 100.
FRIDAY NIGHT
Mostly clear. Lows 64 to 69.
SATURDAY
Mostly sunny. Highs 88 to 93.
SATURDAY NIGHT
Mostly clear. Lows 58 to 64.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. A slight chance of showers. Highs 80 to 85.
SUNDAY NIGHT
Partly cloudy with a slight chance of showers. Lows 53 to 59.

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  9/30/2026
Wednesday
30 SEP 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 78° 79° Clear 0%

0% Thunder
( 0% severe)
WSW   3 40% 52°
High 89° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 88° 86° Clear W   9 29% 52°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 87° 85° Clear 0%

0% Thunder
( 0% severe)
WSW   12 34% 55°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 76° 78° Clear   CALM 54% 58°
Thursday
1 OCT 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 71° 71° Clear 0%

0% Thunder
( 0% severe)
WSW   2 63% 58°
Low 66° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 68° 68° Clear   CALM 73% 59°
High 95° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 67° 67° Clear 0%

0% Thunder
( 0% severe)
  CALM 73% 58°

Clear



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 69° 69° Partly Cloudy   CALM 68% 58°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 82° 81° Clear 0%

0% Thunder
( 0% severe)
  CALM 40% 55°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 93° 90° Clear WSW   6 23% 50°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 92° 90° Clear 0%

0% Thunder
( 0% severe)
W   10 27% 53°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 80° 80° Clear   CALM 42% 55°
Friday
2 OCT 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 11 PM 75° 75° Clear 0%

0% Thunder
( 0% severe)
  CALM 48% 54°
Low 70° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 2 AM 72° 72° Clear   CALM 53% 54°
High 102° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 5 AM 71° 71° Clear 0%

0% Thunder
( 0% severe)
NE   5 57% 55°

Clear



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 8 AM 73° 73° Clear NE   6 53% 55°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 11 AM 90° 87° Clear 0%

0% Thunder
( 0% severe)
  CALM 26% 51°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 2 PM 99° 95° Clear   CALM 17% 47°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 5 PM 97° 94° Clear     WSW   10 21% 50°

ONTARIO, CA extended weather forecast

Saturday
3 OCT 2026
Sunday
4 OCT 2026
Monday
5 OCT 2026
Tuesday
6 OCT 2026
Wednesday
7 OCT 2026
Low 70° Low 71° Low 70° Low 70° Low 70°
High 104° High 102° High 101° High 102° High 99°
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
1% Rain
Clear
2% Rain
Clear
4% Rain
Clear
4% Rain
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