Ontario weather live forecast

Today's maximum temperature in Ontario is expected to be 13°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 Saturday 23rd May 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 Saturday 23rd May 2026

Expect cloudy with some rain in Ontario with a maximum temperature of 13°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 98% chance of some rain and a fresh breeze of 34 kph from the east.

  • 13°C maximum temperature13
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)UV1
    UV index (Low)
  • 98% chance of some rain98
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 34 kph from the East34
    kph wind from E

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Ontario weather for Sunday 24th May 2026

Expect mostly cloudy with rain in Ontario with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 44% chance of some rain and a moderate breeze of 28 kph from the east.

  • 17°C maximum temperature17
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 5 (Moderate)UV5
    UV index (Moderate)
  • 44% chance of some rain44
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Moderate breeze of 28 kph from the East28
    kph wind from E

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Ontario weather for Monday 25th May 2026

Expect sunshine and showers in Ontario with a maximum temperature of 22°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 18% chance of some rain and a light breeze of 10 kph from the south.

  • 22°C maximum temperature22
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 6 (High)UV6
    UV index (High)
  • 18% chance of some rain18
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the South10
    kph wind from S

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Ontario weather for Tuesday 26th May 2026

Expect scattered clouds in Ontario with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

  • 27°C maximum temperature27
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 7 (High)UV7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 15 kph from the South-West15
    kph wind from SW

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Ontario weather for Wednesday 27th May 2026

Expect sunshine and showers in Ontario with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 15 kph from the north-west.

  • 27°C maximum temperature27
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 8 (Very High)UV8
    UV index (Very High)
  • 21% chance of some rain21
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 15 kph from the North-West15
    kph wind from NW

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  • Book flights to Toronto, Vancouver, Calgary, Montreal & more
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