RANCHO CUCAMONGA, CA 91737 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

4:53 PM PDT MAY 11, 2025
Broken Clouds
90°F
Feels Like: 86°F
Dewpoint: 36°F
Rel. Hum.: 15%
Visibility: 10 miles
Wind: WSW at 14 mph, gusts to 22
Pressure: 29.83 inches
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RANCHO CUCAMONGA, CA 91737
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Cooler. Lows 53 to 59. Areas of winds south 10 to 15 mph. Gusts to 25 mph this evening.
MONDAY
Partly cloudy. Not as warm. Highs 74 to 79. Areas of winds south 10 to 20 mph. Gusts to 30 mph in the afternoon.
MONDAY NIGHT
Mostly clear in the evening, then mostly cloudy with patchy drizzle overnight. Colder. Lows 43 to 53. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph in the evening.
TUESDAY
Mostly cloudy with patchy drizzle in the morning, then partly cloudy with a slight chance of showers in the afternoon. Highs 64 to 70. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph in the afternoon. Chance of measurable precipitation 20 percent.
TUESDAY NIGHT
Partly cloudy. Lows 42 to 51. Areas of winds south 10 to 15 mph. Gusts to 30 mph in the evening.
WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 73 to 77.
WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 46 to 53.
THURSDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 75 to 79.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 48 to 54.
FRIDAY
Partly cloudy. Highs 74 to 79.
FRIDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 48 to 54.
SATURDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 71 to 76.
SATURDAY NIGHT
Mostly clear in the evening...becoming mostly cloudy overnight with patchy fog. Lows 48 to 54.

Visible Weather Satellite
RANCHO CUCAMONGA, CA 91737
Infrared Weather Satellite
RANCHO CUCAMONGA, CA 91737
NEXRAD Weather Radar
RANCHO CUCAMONGA, CA 91737

ONTARIO, CA 3 hourly weather forecast

weather forecast created  5:00 AM PDT  5/11/2025
Sunday
11 MAY 2025
RANCHO CUCAMONGA, CA 91737 weather forecast Day 1, 12 hours 11 AM 87° 84° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   5 23% 45°
High 93° RANCHO CUCAMONGA, CA 91737 weather forecast Day 1, 15 hours 2 PM 92° 88° Partly Cloudy SW   12 18% 43°
Partly Cloudy



RANCHO CUCAMONGA, CA 91737 weather forecast Day 1, 18 hours 5 PM 88° 85° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   14 22% 44°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 1, 21 hours 8 PM 77° 78° Partly Cloudy WSW   10 37% 49°
Monday
12 MAY 2025
RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 0 hours 11 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   6 53% 52°
Low 60° RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 3 hours 2 AM 65° 65° Partly Cloudy W   3 63% 52°
High 76° RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 6 hours 5 AM 62° 63° Mostly Cloudy 0%

0% Thunder
( 0% severe)
W   2 72% 53°

Mostly Cloudy



RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 9 hours 8 AM 63° 64° Mostly Cloudy W   3 70% 53°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 12 hours 11 AM 70° 70° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   9 51% 51°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 15 hours 2 PM 74° 74° Partly Cloudy WSW   15 38% 47°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 18 hours 5 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   16 42% 46°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 2, 21 hours 8 PM 62° 60° Partly Cloudy SW   15 60% 48°
Tuesday
13 MAY 2025
RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 0 hours 11 PM 57° 54° Mostly Cloudy 2%

0% Thunder
( 2% severe)
SW   13 80% 51°
Low 54° RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 3 hours 2 AM 56° 53° Mostly Cloudy SSW   10 80% 50°
High 69° RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 6 hours 5 AM 55° 53° Mostly Cloudy 3%

0% Thunder
( 1% severe)
SW   7 80% 49°

Mostly Cloudy



RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 9 hours 8 AM 56° 54° Mostly Cloudy SSW   7 74% 48°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 15 hours 11 AM 61° 60° Partly Cloudy 1%

0% Thunder
( 0% severe)
SSW   9 58% 46°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 18 hours 2 PM 66° 66° Partly Cloudy SW   14 47% 45°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 3, 21 hours 5 PM 66° 66° Partly Cloudy     SW   16 48% 46°

ONTARIO, CA extended weather forecast

Wednesday
14 MAY 2025
Thursday
15 MAY 2025
Friday
16 MAY 2025
Saturday
17 MAY 2025
Sunday
18 MAY 2025
Low 54° Low 56° Low 57° Low 57° Low 57°
High 75° High 75° High 74° High 75° High 75°
RANCHO CUCAMONGA, CA 91737 weather forecast Day 4 RANCHO CUCAMONGA, CA 91737 weather forecast Day 5 RANCHO CUCAMONGA, CA 91737 weather forecast Day 6 RANCHO CUCAMONGA, CA 91737 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
10% Rain
Partly Cloudy
6% Rain
Mostly Cloudy
7% Rain
Overcast
13% Rain
Mostly Cloudy
18% Rain
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