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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 12
May		13:00

WSW
WSW

 13 / 15 mph 80 / 77°F 28% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 52%
Most Significant Cloud Type: high
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 14 / 16 mph 76 / 75°F 31% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: high
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 11 / 12 mph 68 / 66°F 51% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: high
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 9 / 10 mph 61 / 61°F 66% 1013 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 65%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 13
May		01:00

SW
SW

 10 / 12 mph 58 / 56°F 65% 1014 mb
Low level cloud: 68%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 5 / 5 mph 57 / 57°F 64% 1014 mb
Low level cloud: 75%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 4 / 4 mph 62 / 60°F 54% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 6 / 8 mph 69 / 67°F 40% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 13 / 15 mph 73 / 74°F 35% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 13 / 15 mph 72 / 75°F 40% 1012 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 9 / 11 mph 67 / 66°F 51% 1013 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 2%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 5 / 5 mph 64 / 64°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Ontario:

The next 7 day outlook for Ontario shows the average daytime maximum temperature will be around 24°C, with a high for the week of 27°C expected on the afternoon of Thursday 15th. The mean minimum temperature will be 15°C, dipping to its lowest on the morning of Monday 19th at 12°C. Expect the next week to have mostly dry days although Sunday is likely to see a little rain. Predictions are Sunday 19th will have the most precipitation with an accumulation of around 2.0mm. 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