ONTARIO, CA 91758 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


ONTARIO, CA
Current Weather

8:53 PM PDT OCT 26, 2026
Clear
66°F
Feels Like: 66°F
Dewpoint: 52°F
Rel. Hum.: 61%
Visibility: 10 miles
Wind: WSW at 6 mph
Pressure: 30.01 inches
Last 72 hours

Local Area Snow Depth

California Current Weather

California MOS Forecast Weather


Regional Weather Maps


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2026 Hurricanes

ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Clear. Lows 49 to 52 in wind sheltered areas to 51 to 56 in warmer locations. Areas of winds west to 10 mph this evening becoming light.
TUESDAY
Mostly sunny. Highs 73 to 78. Light winds becoming southwest to 10 mph in the afternoon.
TUESDAY NIGHT
Partly cloudy. Lows 50 to 55. Areas of winds south to 10 mph in the evening becoming light.
WEDNESDAY
Partly cloudy. Highs 71 to 75. Light winds becoming southwest to 10 mph in the afternoon.
WEDNESDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 51 to 56. Light winds.
THURSDAY
Mostly cloudy with patchy fog in the morning... Becoming partly cloudy. Highs 68 to 73.
THURSDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. Lows 51 to 57.
FRIDAY
Mostly cloudy in the morning...becoming partly cloudy. A slight chance of showers. Highs 63 to 69.
FRIDAY NIGHT
Partly cloudy. A slight chance of showers in the evening, then a chance of showers overnight. Lows 50 to 56.
SATURDAY
Partly cloudy with a chance of showers. Highs 61 to 67.
SATURDAY NIGHT
Mostly cloudy. A chance of showers in the evening, then showers likely overnight. Lows 50 to 55.
SUNDAY
Showers likely. Highs 60 to 66.
SUNDAY NIGHT
Partly cloudy with a chance of showers. Lows 48 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  4:00 AM PST 10/26/2026
Monday
26 OCT 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 10 AM 73° 73° Clear 0%

0% Thunder
( 0% severe)
  CALM 43% 49°
High 79° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 1 PM 78° 78° Clear WSW   6 30% 44°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 4 PM 78° 78° Clear 0%

0% Thunder
( 0% severe)
WSW   9 30% 44°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 7 PM 68° 68° Clear WSW   6 51% 49°
Tuesday
27 OCT 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 10 PM 64° 65° Clear 0%

0% Thunder
( 0% severe)
SW   5 63% 51°
Low 57° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 1 AM 60° 61° Clear NNE   3 72% 51°
High 78° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 4 AM 58° 58° Clear 0%

0% Thunder
( 0% severe)
ENE   3 72% 49°

Clear



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 7 AM 59° 60° Clear ENE   3 67% 48°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 10 AM 69° 69° Clear 0%

0% Thunder
( 0% severe)
  CALM 45% 47°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 1 PM 75° 75° Clear   CALM 34% 45°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 4 PM 76° 78° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   8 39% 49°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 7 PM 66° 66° Partly Cloudy WSW   6 65% 54°
Wednesday
28 OCT 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 10 PM 63° 63° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   6 70% 53°
Low 57° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 1 AM 59° 60° Partly Cloudy E   3 75% 51°
High 77° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 4 AM 58° 58° Partly Cloudy 0%

0% Thunder
( 0% severe)
ENE   3 72% 49°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 7 AM 58° 58° Mostly Cloudy ENE   3 69% 48°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 10 AM 67° 67° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 49% 47°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 1 PM 73° 73° Partly Cloudy   CALM 33% 42°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 4 PM 75° 75° Partly Cloudy       CALM 34% 45°

ONTARIO, CA extended weather forecast

Thursday
29 OCT 2026
Friday
30 OCT 2026
Saturday
31 OCT 2026
Sunday
1 NOV 2026
Monday
2 NOV 2026
Low 56° Low 56° Low 55° Low 53° Low 59°
High 74° High 70° High 70° High 68° High 76°
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
Mostly Cloudy
7% Rain
Overcast
21% Rain
Mostly Cloudy
19% Rain
Overcast
39% Rain
Overcast
38% Rain
WEATHER SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Ontario, CA
Ontario, CA snow
Ontario, CA radar
CA map
-or-
-or-
-or-
 
91758
91758 snow
91758 radar
 
-or-
-or-
 
 
CA
CA snow
 
 
Copyright © 2026 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions