Ontario weather live forecast

Today's maximum temperature in Ontario is expected to be 4°C. Select a day from the live weather forecast for Ontario (Toronto), Canada for more weather parameters.

  • Wednesday
    17th Dec
    Broken clouds
  • Thursday
    18th Dec
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Friday
    19th Dec
    Cloudy with sleet or snow (5-10 mm of rainfall expected)
  • Saturday
    20th Dec
    Mostly cloudy with light snow (0-2 cm of snow expected)
  • Sunday
    21st Dec
    Broken clouds

5-day weather forecast updated at 04:00 on Wednesday 17th December 2025 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 17th December 2025

Expect broken clouds in Ontario with a maximum temperature of 4°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 35 kph from the south-west.

  • 4°C maximum temperature4
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -2°C wind chill-2
    °C wind chill
  • Fresh breeze of 35 kph from the South-West35
    kph wind from SW

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Ontario weather for Thursday 18th December 2025

Expect mostly cloudy with rain in Ontario with a maximum temperature of 8°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a moderate breeze of 24 kph from the south.

  • 8°C maximum temperature8
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 79% chance of some rain79
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Moderate breeze of 24 kph from the South24
    kph wind from S

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Ontario weather for Friday 19th December 2025

Expect cloudy with sleet or snow in Ontario with a maximum temperature of 8°C and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 41% chance of some sleet or snow and a fresh breeze of 37 kph from the west.

  • 8°C maximum temperature8
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 41% chance of some sleet or snow41
    % chance of some sleet or snow
  • 5-10 mm of sleet/snow expected<10
    mm of sleet/snow expected
  • 3°C wind chill3
    °C wind chill
  • Fresh breeze of 37 kph from the West37
    kph wind from W

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Ontario weather for Saturday 20th December 2025

Expect mostly cloudy with light snow in Ontario with a maximum temperature of 2°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 52% chance of some snow and a moderate breeze of 26 kph from the south-west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 52% chance of some snow52
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -3°C wind chill-3
    °C wind chill
  • Moderate breeze of 26 kph from the South-West26
    kph wind from SW

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Ontario weather for Sunday 21st December 2025

Expect broken clouds in Ontario with a maximum temperature of 1°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -5°C wind chill-5
    °C wind chill
  • Moderate breeze of 28 kph from the West28
    kph wind from W

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

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