ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

11:53 PM PDT APR 8, 2026
Scattered Clouds
64°F
Feels Like: 64°F
Dewpoint: 55°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: WSW at 6 mph
Pressure: 29.93 inches
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ONTARIO, CA 91758
Weather Forecast

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TONIGHT
Mostly clear this evening...becoming partly cloudy. Lows 48 to 52 in wind sheltered areas to 50 to 58 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 25 mph this evening becoming light.
THURSDAY
Partly cloudy. Highs 77 to 82. Areas of winds south to 10 mph becoming west with gusts to 30 mph in the afternoon.
THURSDAY NIGHT
Partly cloudy. Lows around 50 in wind sheltered areas to 49 to 56 in warmer locations. Areas of winds southwest 10 to 15 mph with gusts to 25 mph in the evening becoming light.
FRIDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 74 to 78. Areas of winds southwest to 10 mph...becoming 10 to 20 mph with gusts to 30 mph in the afternoon.
FRIDAY NIGHT
Mostly clear in the evening, then partly cloudy with a chance of showers overnight. Lows 48 to 54. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph in the evening. Chance of measurable precipitation 50 percent.
SATURDAY
Mostly cloudy in the morning...becoming partly cloudy. A chance of showers and a slight chance of thunderstorms. Highs 64 to 69.
SATURDAY NIGHT
Partly cloudy. A slight chance of showers in the evening, then a chance of showers overnight. Lows 44 to 51.
SUNDAY
Mostly cloudy with showers likely in the morning, then partly cloudy with a chance of showers in the afternoon. Highs 58 to 64.
SUNDAY NIGHT
Partly cloudy. A chance of showers. Lows 40 to 47.
MONDAY
Partly cloudy. Highs 63 to 69.
MONDAY NIGHT
Mostly clear. Lows 39 to 47.
TUESDAY
Mostly sunny. Highs 72 to 76.
TUESDAY NIGHT
Partly cloudy. Lows 44 to 52.

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 PM PDT  4/ 8/2026
Thursday
9 APR 2026
ONTARIO, CA 91758 weather forecast Day 1, 0 hours 11 PM 65° 65° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   3 65% 53°
Low 58° ONTARIO, CA 91758 weather forecast Day 1, 3 hours 2 AM 61° 62° Partly Cloudy W   1 75% 53°
High 80° ONTARIO, CA 91758 weather forecast Day 1, 6 hours 5 AM 59° 60° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 80% 53°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 1, 9 hours 8 AM 61° 62° Mostly Cloudy   CALM 78% 54°
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 71° 71° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   3 53% 53°
ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 79° 79° Partly Cloudy WSW   10 38% 51°
ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 77° 78° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   14 42% 52°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 69° 69° Partly Cloudy WSW   9 55% 52°
Friday
10 APR 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 63° 64° Partly Cloudy 2%

0% Thunder
( 0% severe)
WSW   5 72% 54°
Low 56° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 60° 61° Partly Cloudy W   1 84% 55°
High 75° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 58° 59° Partly Cloudy 3%

0% Thunder
( 0% severe)
  CALM 90% 55°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 60° 61° Partly Cloudy   CALM 84% 55°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 68° 68° Clear 6%

0% Thunder
( 4% severe)
SW   5 59% 53°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 74° 74° Partly Cloudy SW   13 43% 50°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 72° 72° Partly Cloudy 9%

0% Thunder
( 6% severe)
SW   14 46% 50°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 65° 65° Partly Cloudy SW   12 60% 51°

ONTARIO, CA extended weather forecast

Saturday
11 APR 2026
Sunday
12 APR 2026
Monday
13 APR 2026
Tuesday
14 APR 2026
Wednesday
15 APR 2026
Low 57° Low 53° Low 50° Low 50° Low 53°
High 69° High 67° High 69° High 70° High 73°
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
Overcast
30% Rain
Overcast
68% Rain
Mostly Cloudy
43% Rain
Partly Cloudy
10% Rain
Partly Cloudy
10% Rain
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