RIALTO, CA 92377 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

9:53 PM PDT MAY 11, 2025
Clear
72°F
Feels Like: 72°F
Dewpoint: 52°F
Rel. Hum.: 49%
Visibility: 10 miles
Wind: W at 10 mph
Pressure: 29.87 inches
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RIALTO, CA 92377
Weather Forecast

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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
RIALTO, CA 92377
Infrared Weather Satellite
RIALTO, CA 92377
NEXRAD Weather Radar
RIALTO, CA 92377

ONTARIO, CA 3 hourly weather forecast

weather forecast created  5:00 PM PDT  5/11/2025
Monday
12 MAY 2025
RIALTO, CA 92377 weather forecast Day 1, 0 hours 11 PM 69° 69° Clear 0%

0% Thunder
( 0% severe)
W   7 53% 51°
Low 60° RIALTO, CA 92377 weather forecast Day 1, 3 hours 2 AM 64° 65° Partly Cloudy W   3 65% 52°
High 76° RIALTO, CA 92377 weather forecast Day 1, 6 hours 5 AM 61° 62° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   2 72% 52°

Mostly Cloudy



RIALTO, CA 92377 weather forecast Day 1, 9 hours 8 AM 63° 64° Mostly Cloudy WSW   3 70% 53°
RIALTO, CA 92377 weather forecast Day 1, 12 hours 11 AM 70° 70° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   9 49% 50°
RIALTO, CA 92377 weather forecast Day 1, 15 hours 2 PM 74° 74° Partly Cloudy WSW   15 40% 48°
RIALTO, CA 92377 weather forecast Day 1, 18 hours 5 PM 71° 71° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   15 42% 47°
RIALTO, CA 92377 weather forecast Day 1, 21 hours 8 PM 62° 60° Partly Cloudy SW   15 62% 49°
Tuesday
13 MAY 2025
RIALTO, CA 92377 weather forecast Day 2, 0 hours 11 PM 58° 55° Mostly Cloudy 2%

0% Thunder
( 2% severe)
SW   13 77% 51°
Low 54° RIALTO, CA 92377 weather forecast Day 2, 3 hours 2 AM 56° 53° Mostly Cloudy SW   10 80% 50°
High 69° RIALTO, CA 92377 weather forecast Day 2, 6 hours 5 AM 55° 53° Mostly Cloudy 2%

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

Mostly Cloudy



RIALTO, CA 92377 weather forecast Day 2, 9 hours 8 AM 56° 55° Mostly Cloudy S   6 74% 48°
RIALTO, CA 92377 weather forecast Day 2, 12 hours 11 AM 61° 60° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   8 56% 45°
RIALTO, CA 92377 weather forecast Day 2, 15 hours 2 PM 67° 67° Partly Cloudy SW   14 45% 45°
RIALTO, CA 92377 weather forecast Day 2, 18 hours 5 PM 67° 67° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   15 45% 45°
RIALTO, CA 92377 weather forecast Day 2, 21 hours 8 PM 62° 60° Partly Cloudy SW   14 56% 46°

ONTARIO, CA extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
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BAD DAY
BAD DATE
Low 56° Low 54° Low 56° Low 57° Low 57°
High 72° High 75° High 75° High 74° High 75°
RIALTO, CA 92377 weather forecast Day 3 RIALTO, CA 92377 weather forecast Day 4 RIALTO, CA 92377 weather forecast Day 5 RIALTO, CA 92377 weather forecast Day 6 RIALTO, CA 92377 weather forecast Day 7
Mostly Cloudy
10% Rain
Partly Cloudy
10% Rain
Partly Cloudy
6% Rain
Mostly Cloudy
7% Rain
Overcast
13% Rain
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