Weather forecast for 10 days
Ontario, CA

Weather forecast for the weekend

Saturday, Jun 21.

Partly Cloudy
5:38 am

8:06 pm
PDT
Partly Cloudy
79°F / 59°F
  • Wind: 14mph SW
  • Humidity: 58%
  • Precip. probability: 9%
  • Precipitation: 0"
  • UV index: 10
On Saturday, June 21, the sky will feature a blend of clouds and sunshine.
Anticipated temperatures will peak at a moderately hot 78.8°F and dip to a minimum of a refreshing 59°F.
Saturday's maximum temperature is expected to be moderately lower than the usual 84°F high in June.
Sunrise will be at 5:38 am and sunset at 8:06 pm; the daylight will last for 14h and 28min.

Sunday, Jun 22.

Sunny
5:38 am

8:06 pm
PDT
Sunny
82°F / 59°F
  • Wind: 14mph WSW
  • Humidity: 50%
  • Precip. probability: 2%
  • Precipitation: 0"
  • UV index: 10
On Sunday, June 22, sunshine will likely continue with scattered clouds at most.
The temperature scale will run from a maximum of a temperate 82.4°F to a minimum of a mild 59°F.
The high temperature is forecasted to match June's standard maximum of 84°F.
Sunrise will be at 5:38 am and sunset at 8:06 pm; the daylight will last for 14h and 28min.

Frequently asked questions

What is the weather forecast for Ontario for Saturday?
On Saturday, moderate cloud cover will mix with sunshine throughout the day.
What will be the highest temperature on Saturday?
On Saturday, the maximum temperature will be 78.8°F, while the minimum temperature will be 59°F.
What is the weather forecast for Ontario for Sunday?
On Sunday, uninterrupted sunshine is anticipated.
What will be the maximum temperature on Sunday?
On Sunday, the maximum temperature will be 82.4°F, while the minimum temperature will be 59°F.
What is the weather forecast for Ontario for the next ten days?
In Ontario, predominantly sunny and occasionally gloomy weather is expected for the next ten days.
How hot will it be in the next ten days?
The maximum temperature will vary between 78.8°F and 89.6°F, while the minimum temperature will vary between 57.2°F and 62.6°F.
What will be the hottest and the coldest days?
With a maximum temperature of 89.6°F, next Thursday through next Saturday will be the hottest days. The coldest day will be Saturday, with a maximum of 78.8°F.

Long-term weather forecast

ThuJun 19.
  • min.
  • 61°F
Mostly Clear
Mostly Clear
  • Wind: 7mph WSW
  • Humidity: 87%
  • UV index: 0
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:37 am 8:06 pm PDT
FriJun 20.
  • 82°F
  • 61°F
Partly Cloudy
Partly Cloudy
  • Wind: 14mph WSW
  • Humidity: 58%
  • UV index: 10
  • Precip. probability: 4%
  • Precipitation: 0"
  • 5:38 am 8:06 pm PDT
SatJun 21.
  • 79°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Wind: 14mph SW
  • Humidity: 58%
  • UV index: 10
  • Precip. probability: 9%
  • Precipitation: 0"
  • 5:38 am 8:06 pm PDT
SunJun 22.
  • 82°F
  • 59°F
Sunny
Sunny
  • Wind: 14mph WSW
  • Humidity: 50%
  • UV index: 10
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:38 am 8:06 pm PDT
MonJun 23.
  • 82°F
  • 57°F
Sunny
Sunny
  • Wind: 14mph WSW
  • Humidity: 53%
  • UV index: 10
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:38 am 8:07 pm PDT
TueJun 24.
  • 82°F
  • 57°F
Sunny
Sunny
  • Wind: 13mph WSW
  • Humidity: 54%
  • UV index: 10
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:39 am 8:07 pm PDT
WedJun 25.
  • 86°F
  • 61°F
Sunny
Sunny
  • Wind: 12mph WSW
  • Humidity: 51%
  • UV index: 10
  • Precip. probability: 2%
  • Precipitation: 0"
  • 5:39 am 8:07 pm PDT
ThuJun 26.
  • 90°F
  • 63°F
Sunny
Sunny
  • Wind: 13mph WSW
  • Humidity: 48%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:39 am 8:07 pm PDT
FriJun 27.
  • 90°F
  • 63°F
Sunny
Sunny
  • Wind: 12mph WSW
  • Humidity: 44%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:40 am 8:07 pm PDT
SatJun 28.
  • 90°F
  • 63°F
Sunny
Sunny
  • Wind: 12mph WSW
  • Humidity: 43%
  • UV index: 10
  • Precip. probability: 0%
  • Precipitation: 0"
  • 5:40 am 8:07 pm PDT
Weather models show that primarily sunny and occasionally gloomy weather is predicted.
Rainfall is not expected in Ontario in the upcoming period.
In the coming days, the highest temperature will vary between 78.8°F and 89.6°F, while the nighttime low will be mostly stable, as night temperatures will lie between 57.2°F and 62.6°F.
Next Thursday through next Saturday, with the highest temperature of 89.6°F, will be the hottest days; with the highest temperature of 78.8°F, Saturday will be the coldest day.
Updated: Jun 20, 2025 @ 06:51:15 UTC
Published by: Weather U.S. | About Us
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