ONTARIO, CA 91758 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


ONTARIO, CA
Current Weather

1:53 AM PDT SEP 7, 2026
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 70°F
Rel. Hum.: 90%
Visibility: 10 miles
Wind: Calm
Pressure: 29.91 inches
Last 72 hours

Local Area Snow Depth

California Current Weather

California MOS Forecast Weather


Weather Map


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

ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Partly cloudy this morning...becoming mostly sunny. A slight chance of showers. Warmer. Highs 88 to 94. Light winds becoming northwest 10 mph this afternoon. Chance of measurable precipitation 20 percent.
TONIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 67 to 71. Areas of winds northwest to 10 mph in the evening becoming light.
TUESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 92 to 99. Light winds becoming west 10 to 15 mph in the afternoon.
TUESDAY NIGHT
Mostly clear. A slight chance of showers in the evening. Lows 69 to 74. Areas of winds northwest to 10 mph in the evening becoming light. Chance of measurable precipitation 20 percent.
WEDNESDAY
Mostly sunny. A slight chance of showers in the afternoon. Highs 97 to 103. Light winds becoming west to 10 mph with gusts to 25 mph in the afternoon. Chance of measurable precipitation 20 percent.
WEDNESDAY NIGHT
Partly cloudy in the evening...becoming mostly clear. Lows 70 to 75.
THURSDAY
Mostly sunny. Highs 95 to 101.
THURSDAY NIGHT
Clear. Lows 67 to 73.
FRIDAY
Sunny. Highs 91 to 97.
FRIDAY NIGHT
Clear. Lows 61 to 67.
SATURDAY
Mostly sunny. Highs 87 to 93.
SATURDAY NIGHT
Clear. Lows 57 to 64.
SUNDAY
Mostly sunny. Highs 88 to 93.

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  9/ 6/2026
Monday
7 SEP 2026
ONTARIO, CA 91758 weather forecast Day 1, 0 hours 11 PM 74° 74° Partly Cloudy 7%

0% Thunder
( 7% severe)
  CALM 82% 68°
Low 70° ONTARIO, CA 91758 weather forecast Day 1, 3 hours 2 AM 72° 72° Partly Cloudy N   3 87% 68°
High 93° ONTARIO, CA 91758 weather forecast Day 1, 6 hours 5 AM 71° 71° Partly Cloudy 5%

0% Thunder
( 8% severe)
NNE   3 90% 68°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 1, 9 hours 8 AM 73° 73° Partly Cloudy ENE   5 90% 70°
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 11 AM 82° 85° Clear 4%

0% Thunder
( 13% severe)
  CALM 63% 68°
ONTARIO, CA 91758 weather forecast Day 1, 15 hours 2 PM 89° 92° Clear WSW   3 47% 66°
ONTARIO, CA 91758 weather forecast Day 1, 18 hours 5 PM 90° 92° Clear 3%

0% Thunder
( 7% severe)
WSW   10 45% 66°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 8 PM 82° 85° Clear WSW   5 61% 67°
Tuesday
8 SEP 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 11 PM 77° 79° Clear 2%

0% Thunder
( 1% severe)
  CALM 69% 66°
Low 72° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 2 AM 75° 75° Partly Cloudy NE   1 74% 66°
High 96° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 5 AM 73° 73° Clear 13%
RAIN
<.01 in
0% Thunder
( 1% severe)
ENE   3 79% 66°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 8 AM 75° 75° Partly Cloudy ENE   5 79% 68°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 11 AM 84° 87° Partly Cloudy 8%

0% Thunder
( 7% severe)
  CALM 57% 67°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 2 PM 91° 93° Partly Cloudy WSW   5 42% 65°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 5 PM 92° 94° Clear 4%

0% Thunder
( 7% severe)
WSW   9 40% 64°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 8 PM 84° 86° Clear   CALM 53% 65°

ONTARIO, CA extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
Low 74° Low 76° Low 74° Low 70° Low 67°
High 105° High 108° High 101° High 93° High 88°
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
Clear
Clear
Partly Cloudy
Partly Cloudy
2% Rain
Partly Cloudy
4% Rain
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