June 9, 2025: Toronto Weather Forecast – Cloudy Skies and Afternoon Thunderstorm Risk

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Cloudy and Warm Start to the Week in Toronto with Potential Afternoon Showers

TORONTO – The workweek begins under mostly cloudy skies and mild morning conditions at 18°C. Residents in Toronto should keep an umbrella close at hand, as there is a 40% chance of showers this morning, with a few showers and risk of thunderstorms expected this afternoon. Warmer and sunnier weather is on the horizon as the week progresses.

Today’s Weather Overview

Current Conditions (as of 7:00 AM EDT)

  • Temperature: 17.6°C

  • Humidity: 82%

  • Dew Point: 14.4°C

  • Wind: South at 8 km/h

  • Pressure: 100.6 kPa (rising)

  • Visibility: 16 km

  • Condition: Mostly Cloudy

Monday Forecast

  • Sky: Mainly cloudy with showers developing near noon

  • Precipitation: 40% chance this morning; scattered showers and possible thunderstorm this afternoon

  • High: 20°C

  • Humidex: 25

  • Wind: South 20 km/h by early afternoon

  • UV Index: 5 (moderate)

Tonight

  • Conditions: Partly cloudy

  • Precipitation: 40% chance of evening showers

  • Low: 15°C

  • Wind: South 20 km/h

Tomorrow’s Forecast

Tuesday, June 10

  • Sky: Mix of sun and cloud

  • Precipitation: 40% chance of afternoon showers

  • High: 22°C

  • Wind: Southwest 20 km/h

  • UV Index: 7 (high)

Tuesday Night

  • Sky: Clear

  • Low: 15°C

Midweek Outlook

  • Wednesday, June 11: A mix of sun and cloud with 30% chance of showers. High: 28°C

  • Wednesday Night: Clear skies continue, Low: 17°C


Wardrobe Recommendations

  • Monday: Dress in light layers with a waterproof outer layer handy for afternoon showers.

  • Tuesday: Prepare for mixed conditions—light, breathable clothing is best with a windbreaker for possible showers.

  • Wednesday: Summer attire is suitable with highs approaching 28°C, but keep an eye on sudden changes in cloud cover or brief showers.

Weather Trivia

Did You Know?
Toronto averages 75 thunderstorm days per year, with June being among the busiest months. The city’s location between Lake Ontario and the Niagara Escarpment helps foster convective activity, especially when moist, unstable air pushes in from the south—exactly what we’re seeing today.

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