Ontario weather live forecast

Today's maximum temperature in Ontario is expected to be 21°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 20th 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 Wednesday 20th May 2026

Expect broken clouds in Ontario with a maximum temperature of 21°C, maximum UV of 9 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the north-west.

  • 21°C maximum temperature21
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 9 (Very High)UV9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Moderate breeze of 23 kph from the North-West23
    kph wind from NW

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Ontario weather for Thursday 21st May 2026

Expect scattered clouds in Ontario with a maximum temperature of 13°C, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

  • 13°C maximum temperature13
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)UV8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 18 kph from the North18
    kph wind from N

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Ontario weather for Friday 22nd May 2026

Expect broken clouds in Ontario with a maximum temperature of 15°C, maximum UV of 6 (High) and no hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the east.

  • 15°C maximum temperature15
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 6 (High)UV6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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Ontario weather for Saturday 23rd May 2026

Expect cloudy with some rain in Ontario with a maximum temperature of 13°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 63% chance of some rain and a fresh breeze of 29 kph from the east.

  • 13°C maximum temperature13
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)UV2
    UV index (Low)
  • 63% chance of some rain63
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Fresh breeze of 29 kph from the East29
    kph wind from E

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Ontario weather for Sunday 24th May 2026

Expect cloudy with some rain in Ontario with a maximum temperature of 17°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 47% chance of some rain and a moderate breeze of 21 kph from the east.

  • 17°C maximum temperature17
    °C maximum temperature
  • 11°C minimum temperature11
    °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)
  • 47% chance of some rain47
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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