TORONTO – WEATHER – Sunny with highs of 27°C today. Heat and humidity will spike on Saturday with humidex of 41°C and chance of thunderstorms.
Stay sun-safe and hydrated.
Toronto wakes up to a beautiful sunny Friday morning with cool, comfortable temperatures. But the heat is coming—expect rising humidity and temperatures climbing into the low 30s by Saturday, along with a risk of thunderstorms. Stay prepared for changing conditions heading into the weekend.
Today’s Weather Overview
Current Conditions
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Temperature: 16.1 °C
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Humidity: 67%
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Wind: North-northwest at 10 km/h
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Pressure: 102.1 kPa (rising)
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Visibility: 24 km
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Conditions: Mainly Sunny
Forecast for Today
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High: 27 °C
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Humidex: 32 – moderately humid
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UV Index: 9 – Very High; sunscreen and shade are musts
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Sky: Clear and sunny all day
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Tonight: Clear with a low of 17°C – a pleasant night for outdoor activities
Tomorrow’s Forecast
Expected Conditions
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Saturday, July 5: Increasing cloudiness in the morning with a 30% chance of showers by afternoon and a risk of thunderstorms
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High: 31 °C
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Humidex: 41 – Extreme heat and humidity
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Winds: South 20 km/h
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UV Index: 7 – High
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Sunday, July 6: Mix of sun and cloud, high of 31°C
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Evening brings a 40% chance of showers, low 20°C
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Wardrobe Recommendations
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Today: Ideal for short sleeves, light pants or shorts. Bring sunglasses and sunscreen—the UV index is very high.
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Saturday & Sunday: Prepare for a heatwave feel—opt for breathable, light-coloured clothing, a wide-brimmed hat, and consider carrying a water bottle if outdoors.
Health & Safety Tips
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Friday: Ideal outdoor conditions—just protect against UV exposure
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Weekend:
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Hydration is key—humidex values over 40°C increase dehydration risk
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Monitor for signs of heat exhaustion: fatigue, headache, dizziness
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Take breaks in shaded or air-conditioned spaces during the afternoon
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Thunderstorm watch: if you’re planning outdoor events, keep an eye on the sky and have a backup plan
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Weather Trivia
Toronto’s record high for July 5th is 35.2°C, set in 1911. While not expected to reach that level tomorrow, the humidex forecast of 41 could make it feel just as oppressive as that historic day over a century ago!
