ONTARIO, CA 91758 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

5:53 PM PDT MAR 14, 2026
Few Clouds
79°F
Feels Like: 78°F
Dewpoint: 39°F
Rel. Hum.: 24%
Visibility: 10 miles
Wind: WSW at 10 mph
Pressure: 29.90 inches
Last 72 hours

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ONTARIO, CA 91758
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Cooler. Lows 46 to 49 in wind sheltered areas to 49 to 59 in warmer locations. Areas of winds west 10 to 15 mph this evening becoming light.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. Warmer. Highs 88 to 95. Areas of winds north 10 to 15 mph. Gusts to 25 mph...becoming 30 mph in the afternoon.
SUNDAY NIGHT
Mostly clear. Lows 51 to 55 in wind sheltered areas to 56 to 66 in warmer locations. Areas of winds north 10 to 15 mph with gusts to 25 mph...becoming to 10 mph overnight.
MONDAY
Mostly sunny. Highs 93 to 98. Areas of winds north to 10 mph...becoming 10 to 15 mph in the afternoon. Gusts to 25 mph.
MONDAY NIGHT
Mostly clear. Lows 54 to 58 in wind sheltered areas to 59 to 69 in warmer locations. Areas of winds north to 10 mph in the evening becoming light.
TUESDAY
Mostly sunny in the morning...becoming partly cloudy. Hot. Highs 95 to 101.
TUESDAY NIGHT
Partly cloudy in the evening...becoming clear. Lows 57 to 67.
WEDNESDAY
Sunny, hot. Highs 96 to 102.
WEDNESDAY NIGHT
Mostly clear. Lows 57 to 67.
THURSDAY
Sunny, hot. Highs 98 to 104.
THURSDAY NIGHT
Clear. Lows 59 to 69.
FRIDAY
Sunny, hot. Highs 100 to 106.
FRIDAY NIGHT
Clear. Lows 58 to 68.

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  3/14/2026
Saturday
14 MAR 2026
ONTARIO, CA 91758 weather forecast Day 1, 12 hours 10 AM 74° 74° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   1 32% 42°
High 83° ONTARIO, CA 91758 weather forecast Day 1, 15 hours 1 PM 82° 80° Clear WSW   9 23% 41°
Clear



ONTARIO, CA 91758 weather forecast Day 1, 18 hours 4 PM 81° 80° Clear 0%

0% Thunder
( 0% severe)
WSW   12 26% 43°
ONTARIO, CA 91758 weather forecast Day 1, 21 hours 7 PM 70° 70° Clear WSW   7 45% 48°
Sunday
15 MAR 2026
ONTARIO, CA 91758 weather forecast Day 2, 0 hours 10 PM 64° 66° Clear 0%

0% Thunder
( 0% severe)
W   2 58% 49°
Low 56° ONTARIO, CA 91758 weather forecast Day 2, 3 hours 1 AM 60° 61° Clear   CALM 69% 50°
High 89° ONTARIO, CA 91758 weather forecast Day 2, 6 hours 4 AM 58° 59° Clear 0%

0% Thunder
( 0% severe)
N   1 72% 49°

Clear



ONTARIO, CA 91758 weather forecast Day 2, 9 hours 7 AM 59° 60° Partly Cloudy NW   1 67% 48°
ONTARIO, CA 91758 weather forecast Day 2, 12 hours 10 AM 74° 74° Clear 0%

0% Thunder
( 0% severe)
NNW   3 35% 45°
ONTARIO, CA 91758 weather forecast Day 2, 15 hours 1 PM 87° 84° Clear N   8 18% 38°
ONTARIO, CA 91758 weather forecast Day 2, 18 hours 4 PM 88° 84° Clear 0%

0% Thunder
( 0% severe)
NNW   9 16% 37°
ONTARIO, CA 91758 weather forecast Day 2, 21 hours 7 PM 77° 78° Partly Cloudy WNW   6 29% 42°
Monday
16 MAR 2026
ONTARIO, CA 91758 weather forecast Day 3, 0 hours 10 PM 70° 70° Clear 0%

0% Thunder
( 0% severe)
N   3 38% 43°
Low 60° ONTARIO, CA 91758 weather forecast Day 3, 3 hours 1 AM 65° 65° Partly Cloudy N   2 43% 42°
High 93° ONTARIO, CA 91758 weather forecast Day 3, 6 hours 4 AM 63° 64° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNE   2 43% 40°

Partly Cloudy



ONTARIO, CA 91758 weather forecast Day 3, 9 hours 7 AM 64° 66° Partly Cloudy NNE   2 38% 38°
ONTARIO, CA 91758 weather forecast Day 3, 15 hours 10 AM 81° 79° Clear 0%

0% Thunder
( 0% severe)
NE   3 21% 37°
ONTARIO, CA 91758 weather forecast Day 3, 18 hours 1 PM 91° 87° Partly Cloudy NNW   8 13% 34°
ONTARIO, CA 91758 weather forecast Day 3, 21 hours 4 PM 91° 87° Partly Cloudy     W   10 14% 35°

ONTARIO, CA extended weather forecast

Tuesday
17 MAR 2026
Wednesday
18 MAR 2026
Thursday
19 MAR 2026
Friday
20 MAR 2026
Saturday
21 MAR 2026
Low 59° Low 61° Low 61° Low 63° Low 59°
High 97° High 96° High 99° High 97° High 95°
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
3% Rain
Clear
3% Rain
Clear
3% Rain
Clear
1% Rain
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