ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

10:53 AM PDT APR 17, 2026
Few Clouds
64°F
Feels Like: 65°F
Dewpoint: 46°F
Rel. Hum.: 52%
Visibility: 10 miles
Wind: Variable at 5 mph
Pressure: 30.01 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows 44 to 47 in wind sheltered areas to 46 to 53 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 30 mph becoming east overnight.
SATURDAY
Mostly sunny. Highs 80 to 86. Areas of winds north to 10 mph becoming southwest in the afternoon. Gusts to 25 mph.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows around 50 in wind sheltered areas to 51 to 58 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
SUNDAY
Partly cloudy. Highs 80 to 85. Areas of winds southwest to 10 mph...becoming 10 to 15 mph with gusts to 30 mph in the afternoon.
SUNDAY NIGHT
Mostly clear. Lows 44 to 47 in wind sheltered areas to 47 to 53 in warmer locations. Areas of winds southwest 10 to 15 mph with gusts to 30 mph in the evening becoming light.
MONDAY
Mostly sunny. Highs 77 to 82.
MONDAY NIGHT
Mostly clear. Lows 44 to 51.
TUESDAY
Mostly sunny. A slight chance of showers in the afternoon. Highs 72 to 77.
TUESDAY NIGHT
Partly cloudy with a slight chance of showers. Lows 46 to 52.
WEDNESDAY
Partly cloudy. Highs 68 to 73.
WEDNESDAY NIGHT
Partly cloudy. Lows 43 to 50.
THURSDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 71 to 76.
THURSDAY NIGHT
Mostly clear. Lows 45 to 51.

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  4/17/2026
Friday
17 APR 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 68° 68° Clear 0%

0% Thunder
( 0% severe)
N   13 26% 32°
High 79° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 77° 76° Clear NNE   10 12% 22°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 78° 77° Clear 0%

0% Thunder
( 0% severe)
WNW   9 14% 25°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 70° 70° Clear W   6 29% 36°
Saturday
18 APR 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 63° 64° Clear 0%

0% Thunder
( 0% severe)
NW   5 34% 34°
Low 53° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 58° 58° Clear NNE   3 37% 32°
High 84° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 55° 55° Clear 0%

0% Thunder
( 0% severe)
N   3 38% 30°

Clear



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 60° 61° Clear NNE   3 29% 28°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 74° 74° Clear 0%

0% Thunder
( 0% severe)
NE   3 14% 22°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 83° 80° Partly Cloudy SSW   8 9% 19°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 82° 80° Clear 0%

0% Thunder
( 0% severe)
WSW   12 14% 28°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 72° 72° Partly Cloudy WSW   8 26% 35°
Sunday
19 APR 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 11 PM 65° 65° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   3 37% 38°
Low 56° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 2 AM 61° 62° Mostly Cloudy NNE   1 48% 41°
High 83° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 5 AM 58° 59° Partly Cloudy 0%

0% Thunder
( 0% severe)
NE   1 51% 40°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 8 AM 62° 63° Partly Cloudy   CALM 46% 41°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 11 AM 73° 73° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   3 29% 39°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 2 PM 82° 80° Partly Cloudy SW   10 19% 36°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 5 PM 80° 79° Partly Cloudy     SW   13 22% 38°

ONTARIO, CA extended weather forecast

Monday
20 APR 2026
Tuesday
21 APR 2026
Wednesday
22 APR 2026
Thursday
23 APR 2026
Friday
24 APR 2026
Low 55° Low 53° Low 54° Low 53° Low 54°
High 80° High 74° High 68° High 71° High 72°
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
2% Rain
Mostly Cloudy
7% Rain
Overcast
40% Rain
Partly Cloudy
39% Rain
Partly Cloudy
17% Rain
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