ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

8:53 PM PDT MAR 9, 2026
Clear
61°F
Feels Like: 60°F
Dewpoint: 52°F
Rel. Hum.: 72%
Visibility: 10 miles
Wind: WSW at 9 mph
Pressure: 29.93 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Patchy fog overnight. Lows 43 to 46 in wind sheltered areas to 45 to 54 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 30 mph this evening becoming light.
TUESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 69 to 74. Areas of winds south to 10 mph becoming west with gusts to 30 mph in the afternoon.
TUESDAY NIGHT
Mostly clear. Lows 43 to 46 in wind sheltered areas to 45 to 54 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
WEDNESDAY
Partly cloudy with patchy fog in the morning... Becoming sunny. Warmer. Highs 82 to 87. Light winds becoming west to 10 mph in the afternoon.
WEDNESDAY NIGHT
Clear. Lows 50 to 53 in wind sheltered areas to 53 to 63 in warmer locations. Areas of winds north to 10 mph in the evening becoming light.
THURSDAY
Sunny, warmer. Highs 90 to 97.
THURSDAY NIGHT
Clear. Lows 54 to 64.
FRIDAY
Mostly sunny in the morning...becoming partly cloudy. Highs 93 to 99.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 54 to 64.
SATURDAY
Partly cloudy. Highs 90 to 95.
SATURDAY NIGHT
Mostly clear. Lows 52 to 62.
SUNDAY
Sunny. Highs 91 to 97.
SUNDAY NIGHT
Mostly clear. Lows 53 to 63.

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  3/ 9/2026
Monday
9 MAR 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 10 AM 64° 66° Clear 1%

0% Thunder
( 0% severe)
SW   2 48% 44°
High 72° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 1 PM 71° 71° Clear WSW   10 38% 44°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 4 PM 71° 71° Clear 1%

0% Thunder
( 1% severe)
WSW   13 42% 47°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 7 PM 63° 63° Partly Cloudy WSW   8 62% 50°
Tuesday
10 MAR 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 10 PM 59° 60° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   2 75% 51°
Low 51° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 1 AM 56° 56° Partly Cloudy   CALM 83% 51°
High 71° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 4 AM 54° 54° Mostly Cloudy 1%

0% Thunder
( 0% severe)
  CALM 90% 51°

Mostly Cloudy



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 7 AM 54° 54° Mostly Cloudy   CALM 93% 52°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 10 AM 61° 62° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   2 72% 52°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 1 PM 68° 68° Partly Cloudy WSW   9 53% 50°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 4 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   12 49% 49°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 7 PM 62° 62° Clear WSW   7 67% 51°
Wednesday
11 MAR 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 10 PM 58° 59° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   2 80% 52°
Low 51° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 1 AM 55° 55° Partly Cloudy   CALM 90% 52°
High 82° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 4 AM 54° 54° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 90% 51°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 7 AM 54° 54° Partly Cloudy   CALM 83% 49°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 10 AM 66° 66° Clear 0%

0% Thunder
( 0% severe)
SW   1 56% 50°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 1 PM 79° 79° Clear WSW   7 32% 47°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 4 PM 81° 80° Clear     W   9 28% 45°

ONTARIO, CA extended weather forecast

Thursday
12 MAR 2026
Friday
13 MAR 2026
Saturday
14 MAR 2026
Sunday
15 MAR 2026
Monday
16 MAR 2026
Low 55° Low 57° Low 57° Low 55° Low 55°
High 93° High 91° High 87° High 88° High 90°
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
2% Rain
Partly Cloudy
4% Rain
Partly Cloudy
4% Rain
Clear
6% Rain
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