Ontario weather forecast

Last updated at 04:03 on Tuesday 25th June 2019 GMT

Going to Ontario? Find the best month to visit Ontario based on the weather.

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Tomorrow's maximum temperature in Ontario is expected to be 28°C. The weather forecast shown above is for Toronto.

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The 5-day weather forecast for Ontario, represented by Toronto, is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Ontario weather forecast by day

Below are the detailed weather forecasts for Ontario for the next 5 days. The forecasts shown are for Toronto and may not represent the whole of Ontario. Browse more destinations in Ontario to view more weather forecasts.

Ontario weather for Tuesday 25th June 2019

Below is the Ontario weather forecast for Tuesday 25th June 2019. Expect isolated thunderstorms in Ontario with a maximum temperature of 25°C, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and a light breeze of 9 kph from the south.

  • 25°C maximum temperature25
    °C maximum temperature
  • 20°C minimum temperature20
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 13 hours of bright sunshine13
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 85% chance of some rain85
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Light breeze of 9 kph from the South9
    kph wind from S

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Ontario weather for Wednesday 26th June 2019

Below is the Ontario weather forecast for Wednesday 26th June 2019. Expect isolated thunderstorms in Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and a light breeze of 8 kph from the south-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 46% chance of some rain46
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 8 kph from the South-East8
    kph wind from SE

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Ontario weather for Thursday 27th June 2019

Below is the Ontario weather forecast for Thursday 27th June 2019. Expect scattered clouds in Ontario with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

  • 29°C maximum temperature29
    °C maximum temperature
  • 19°C minimum temperature19
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 8 kph from the South-West8
    kph wind from SW

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Ontario weather for Friday 28th June 2019

Below is the Ontario weather forecast for Friday 28th June 2019. Expect isolated thunderstorms in Ontario with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 17 kph from the south-west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 21°C minimum temperature21
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 74% chance of some rain74
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 17 kph from the South-West17
    kph wind from SW

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Ontario weather for Saturday 29th June 2019

Below is the Ontario weather forecast for Saturday 29th June 2019. Expect isolated thunderstorms in Ontario with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 16 kph from the west.

  • 27°C maximum temperature27
    °C maximum temperature
  • 21°C minimum temperature21
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 40% chance of some rain40
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 16 kph from the West16
    kph wind from W

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