RANCHO CUCAMONGA, CA 91729 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

12:53 AM PDT JUN 9, 2026
Clear
63°F
Feels Like: 64°F
Dewpoint: 55°F
Rel. Hum.: 75%
Visibility: 10 miles
Wind: SW at 3 mph
Pressure: 29.90 inches
Last 72 hours

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RANCHO CUCAMONGA, CA 91729
Weather Forecast

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Snow Depth pages
TODAY
Mostly sunny. Highs 83 to 88. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph this afternoon.
TONIGHT
Mostly clear. Lows 56 to 61. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
WEDNESDAY
Mostly sunny. Warmer. Highs 90 to 97. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear. Lows 57 to 62. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.
THURSDAY
Mostly sunny. Highs 88 to 96. Areas of winds southwest to 10 mph...becoming 10 to 15 mph in the afternoon.
THURSDAY NIGHT
Mostly clear. Lows 59 to 62.
FRIDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 89 to 97.
FRIDAY NIGHT
Mostly clear. Lows 60 to 64.
SATURDAY
Mostly sunny. Highs 90 to 97.
SATURDAY NIGHT
Clear. Lows 60 to 64.
SUNDAY
Mostly sunny. Highs 88 to 95.
SUNDAY NIGHT
Mostly clear. Lows 58 to 62.
MONDAY
Mostly sunny. Highs 86 to 93.

Visible Weather Satellite
RANCHO CUCAMONGA, CA 91729
Infrared Weather Satellite
RANCHO CUCAMONGA, CA 91729
NEXRAD Weather Radar
RANCHO CUCAMONGA, CA 91729

ONTARIO, CA 3 hourly weather forecast

weather forecast created  5:00 PM PDT  6/ 8/2026
Tuesday
9 JUN 2026
RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 0 hours 11 PM 64° 64° Clear 0%

0% Thunder
( 0% severe)
WSW   7 73% 55°
Low 58° RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 3 hours 2 AM 61° 62° Clear W   3 78% 54°
High 86° RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 6 hours 5 AM 59° 60° Clear 0%

0% Thunder
( 0% severe)
  CALM 83% 54°

Clear



RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 9 hours 8 AM 63° 64° Partly Cloudy   CALM 75% 55°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 12 hours 11 AM 74° 74° Clear 0%

0% Thunder
( 0% severe)
SW   6 53% 56°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 15 hours 2 PM 82° 82° Clear WSW   10 41% 56°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 18 hours 5 PM 82° 82° Clear 0%

0% Thunder
( 0% severe)
WSW   12 41% 56°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 1, 21 hours 8 PM 75° 75° Clear WSW   9 52% 56°
Wednesday
10 JUN 2026
RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 0 hours 11 PM 68° 68° Clear 0%

0% Thunder
( 0% severe)
W   6 65% 56°
Low 61° RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 3 hours 2 AM 64° 66° Clear W   2 78% 57°
High 91° RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 6 hours 5 AM 63° 64° Clear 0%

0% Thunder
( 0% severe)
  CALM 81% 57°

Clear



RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 9 hours 8 AM 66° 66° Partly Cloudy   CALM 73% 57°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 12 hours 11 AM 79° 80° Clear 0%

0% Thunder
( 0% severe)
SW   6 49% 58°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 15 hours 2 PM 88° 87° Clear WSW   10 36% 58°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 18 hours 5 PM 88° 87° Clear 0%

0% Thunder
( 0% severe)
WSW   13 35% 57°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 2, 21 hours 8 PM 77° 79° Clear WSW   12 54% 59°

ONTARIO, CA extended weather forecast

Thursday
11 JUN 2026
Friday
12 JUN 2026
Saturday
13 JUN 2026
Sunday
14 JUN 2026
Monday
15 JUN 2026
Low 64° Low 64° Low 63° Low 65° Low 63°
High 88° High 94° High 95° High 91° High 91°
RANCHO CUCAMONGA, CA 91729 weather forecast Day 3 RANCHO CUCAMONGA, CA 91729 weather forecast Day 4 RANCHO CUCAMONGA, CA 91729 weather forecast Day 5 RANCHO CUCAMONGA, CA 91729 weather forecast Day 6 RANCHO CUCAMONGA, CA 91729 weather forecast Day 7
Partly Cloudy
Partly Cloudy
1% Rain
Partly Cloudy
Partly Cloudy
1% Rain
Partly Cloudy
1% Rain
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