Ontario weather live forecast

Today's maximum temperature in Ontario is expected to be 24°C. Select a day from the live weather forecast for Ontario (Toronto), Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Wednesday 16th September 2026 GMT

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

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Below are temperatures expected today at popular countries, regions and places in Ontario. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

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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 Wednesday 16th September 2026

Expect sunshine and showers in Ontario with a maximum temperature of 24°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 12 kph from the north.

  • 24°C maximum temperature24
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 12 kph from the North12
    kph wind from N

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Ontario weather for Thursday 17th September 2026

Expect mostly cloudy with light rain in Ontario with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 14 kph from the north-east.

  • 22°C maximum temperature22
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 26% chance of some rain26
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 14 kph from the North-East14
    kph wind from NE

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Ontario weather for Friday 18th September 2026

Expect scattered clouds in Ontario with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

  • 21°C maximum temperature21
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Gentle breeze of 14 kph from the North14
    kph wind from N

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Ontario weather for Saturday 19th September 2026

Expect cloudy with some rain in Ontario with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 42% chance of some rain and a gentle breeze of 18 kph from the east.

  • 18°C maximum temperature18
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 42% chance of some rain42
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Gentle breeze of 18 kph from the East18
    kph wind from E

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Ontario weather for Sunday 20th September 2026

Expect sunshine and showers in Ontario with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 23% chance of some rain and a gentle breeze of 17 kph from the north-east.

  • 19°C maximum temperature19
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 23% chance of some rain23
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 17 kph from the North-East17
    kph wind from NE

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