RIALTO, CA 92377 Weather Forecast & Current Conditions

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ONTARIO, CA
Current Weather

1:53 AM PDT MAY 11, 2025
Broken Clouds
73°F
Feels Like: 73°F
Dewpoint: 48°F
Rel. Hum.: 41%
Visibility: 10 miles
Wind: E at 3 mph
Pressure: 29.88 inches
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RIALTO, CA 92377
Weather Forecast

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Snow Depth pages
TONIGHT
Mostly clear this evening...becoming partly cloudy. Lows 63 to 70. Areas of winds west 10 to 15 mph this evening becoming light.
SUNDAY
Partly cloudy. Highs 94 to 98. Areas of winds east to 10 mph becoming southwest with gusts to 30 mph in the afternoon.
SUNDAY NIGHT
Partly cloudy. Cooler. Lows 53 to 60. Areas of winds southwest 10 to 15 mph with gusts to 25 mph in the evening becoming light.
MONDAY
Mostly cloudy in the morning...becoming partly cloudy. Not as warm. Highs 75 to 80. Areas of winds south 10 to 20 mph. Gusts to 25 mph...becoming 30 mph in the afternoon.
MONDAY NIGHT
Mostly clear in the evening...becoming mostly cloudy. Colder. Lows 44 to 53. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph in the evening.
TUESDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs 64 to 69.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 41 to 50.
WEDNESDAY
Partly cloudy in the morning...becoming mostly sunny. Warmer. Highs 72 to 77.
WEDNESDAY NIGHT
Mostly clear. Patchy fog overnight. Lows 46 to 53.
THURSDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 74 to 79.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 48 to 53.
FRIDAY
Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 75 to 79.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 48 to 55.

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  5/10/2025
Sunday
11 MAY 2025
RIALTO, CA 92377 weather forecast Day 1, 0 hours 11 PM 78° 78° Partly Cloudy 0%

0% Thunder
( 0% severe)
ENE   5 35% 48°
Low 69° RIALTO, CA 92377 weather forecast Day 1, 3 hours 2 AM 74° 74° Partly Cloudy NNW   2 40% 48°
High 93° RIALTO, CA 92377 weather forecast Day 1, 6 hours 5 AM 70° 70° Mostly Cloudy 0%

0% Thunder
( 0% severe)
ENE   2 45% 48°

Mostly Cloudy



RIALTO, CA 92377 weather forecast Day 1, 9 hours 8 AM 76° 78° Partly Cloudy E   1 37% 48°
RIALTO, CA 92377 weather forecast Day 1, 12 hours 11 AM 86° 83° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   3 25% 46°
RIALTO, CA 92377 weather forecast Day 1, 15 hours 2 PM 91° 87° Partly Cloudy WSW   12 20% 44°
RIALTO, CA 92377 weather forecast Day 1, 18 hours 5 PM 88° 85° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   14 22% 45°
RIALTO, CA 92377 weather forecast Day 1, 21 hours 8 PM 77° 78° Partly Cloudy WSW   10 36% 48°
Monday
12 MAY 2025
RIALTO, CA 92377 weather forecast Day 2, 0 hours 11 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   6 53% 51°
Low 60° RIALTO, CA 92377 weather forecast Day 2, 3 hours 2 AM 64° 65° Partly Cloudy W   3 63% 51°
High 75° RIALTO, CA 92377 weather forecast Day 2, 6 hours 5 AM 61° 62° Mostly Cloudy 0%

0% Thunder
( 0% severe)
W   2 70% 51°

Mostly Cloudy



RIALTO, CA 92377 weather forecast Day 2, 9 hours 8 AM 63° 64° Mostly Cloudy SSW   5 67% 52°
RIALTO, CA 92377 weather forecast Day 2, 12 hours 11 AM 69° 69° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   10 51% 50°
RIALTO, CA 92377 weather forecast Day 2, 15 hours 2 PM 74° 74° Partly Cloudy SW   16 38% 47°
RIALTO, CA 92377 weather forecast Day 2, 18 hours 5 PM 71° 71° Partly Cloudy 1%

0% Thunder
( 0% severe)
SW   16 41% 46°
RIALTO, CA 92377 weather forecast Day 2, 21 hours 8 PM 62° 60° Partly Cloudy SW   16 60% 48°

ONTARIO, CA extended weather forecast

Tuesday
13 MAY 2025
Wednesday
14 MAY 2025
Thursday
15 MAY 2025
Friday
16 MAY 2025
Saturday
17 MAY 2025
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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