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Local Weather

Ontario Weather Forecast

Temperature, wind, rain and more for Ontario

California, United States Of America

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 30
Mar		10:00

WSW
WSW

 5 / 6 mph 79 / 76°F 27% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 8 / 9 mph 83 / 79°F 28% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 9 / 10 mph 78 / 78°F 41% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 80%
Most Significant Cloud Type: high
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 6 / 7 mph 73 / 77°F 55% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 35%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 3 / 4 mph 68 / 68°F 64% 1015 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 32%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 31
Mar		01:00

W
W

 2 / 2 mph 66 / 66°F 69% 1014 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

 3 / 3 mph 64 / 64°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 96%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 4 / 5 mph 69 / 66°F 67% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 48%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 5 / 6 mph 75 / 76°F 49% 1015 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 85%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 9 / 11 mph 77 / 76°F 41% 1013 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 96%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 10 / 11 mph 76 / 76°F 38% 1011 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 97%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 13 / 15 mph 69 / 69°F 55% 1013 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 99%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 9 / 10 mph 67 / 67°F 53% 1014 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Ontario:

Reviewing the forecast for Ontario Over the next 7 days and the average daytime maximum temperature will be around 28°C, with a high for the week of 32°C expected on the afternoon of Sunday 5th. The average minimum temperature will be 17°C, dipping to its lowest on the morning of Thursday 2nd at 14°C. Expect the week ahead to remain predominantly dry. On the whole winds are likely to be moderate.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure