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May 16th, 2026 :: 10:30 am PDT   

Local Weather Report for
Rialto
California, United States

 Rialto Weather Forecast Summary  
 
Today
May 16th
Sunday
May 17th
Monday
May 18th
Tuesday
May 19th
Wednesday
May 20th
Mostly Sunny Mix of Sun and Cloud Mostly Sunny Sunny Mostly Sunny
68°F
65°F
48°F
71°F
46°F
78°F
51°F
83°F
57°F
 
 Rialto Detailed Weather Forecast  
 
Saturday, May 16th, 2026
Morning Temperature: 57°F
Mostly sunny.
Afternoon Temperature: 67°F
Sunny. Windy at times.
Evening Temperature: 51°F
Mostly clear.
Sunday, May 17th, 2026
Overnight Temperature: 48°F
A mix of cloudy and clear skies.
Morning Temperature: 52°F
Sunny with cloudy periods.
Afternoon Temperature: 63°F
Mostly sunny. Windy at times.
Evening Temperature: 51°F
A mix of cloudy and clear skies.
Monday, May 18th, 2026
Overnight Temperature: 47°F
Clear with cloudy periods.
Morning Temperature: 58°F
Sunny.
Afternoon Temperature: 71°F
Sunny. Windy at times.
Evening Temperature: 54°F
Mostly clear.
Tuesday, May 19th, 2026
Overnight Temperature: 51°F
Clear.
Morning Temperature: 68°F
Sunny.
Afternoon Temperature: 78°F
Sunny. Windy at times.
Evening Temperature: 60°F
Clear.
Wednesday, May 20th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 75°F
Sunny.
Afternoon Temperature: 81°F
Sunny. Windy.
Evening Temperature: 63°F
Mostly clear.
Thursday, May 21st, 2026
Overnight Temperature: 58°F
Clear.
Morning Temperature: 75°F
Sunny.
Afternoon Temperature: 82°F
Sunny. Windy at times.
Evening Temperature: 62°F
Clear.
Friday, May 22nd, 2026
Overnight Temperature: 58°F
Mostly clear.
Morning Temperature: 73°F
Mostly sunny.
Afternoon Temperature: 77°F
Mostly sunny. Windy at times.
Evening Temperature: 60°F
Mostly clear.
Saturday, May 23rd, 2026
Overnight Temperature: 56°F
A mix of clear and cloudy skies.
Morning Temperature: 68°F
Mostly sunny.
Afternoon Temperature: 76°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 58°F
Clear.
Sunday, May 24th, 2026
Overnight Temperature: 52°F
Clear with cloudy periods.
Morning Temperature: 65°F
A mix of sun and cloud.
Afternoon Temperature: 74°F
Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 55°F
A mix of cloudy and clear skies.





 

  [ Local Weather Report ]
Colton, CA 
8:55 AM  61°F
Overcast
 
Fontana, CA 
 
San Bernardino, CA 
8:55 AM  61°F
Overcast
 
Grand Terrace, CA 
8:55 AM  61°F
Overcast
 
Loma Linda, CA 
8:55 AM  61°F
Overcast
 
Highland, CA 
8:55 AM  61°F
Overcast
 
Redlands, CA 
 
Ontario, CA 
8:53 AM  63°F
Overcast
 
Rancho Cucamonga, CA 
8:53 AM  63°F
Overcast
 
Moreno Valley, CA 
8:55 AM  63°F
Mostly Cloudy

 
This WeatherCity Weather Forecast for Rialto, California, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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