Tomorrow's Weather Toronto: Thunderstorms and Heat Warning

Tomorrow's forecast:

Morning Thunderstorms Bring Warm, Muggy Start

    The morning in Toronto will start warm and muggy with temperatures near 23°C and a feels-like temperature climbing to 29°C. Thunderstorms are likely with a 40% chance of rain, accompanied by light winds that will keep the air feeling still and humid. Compared to today’s cooler start, tomorrow morning will feel noticeably warmer and more oppressive.

Activities Recommendations for the morning of Jul 04, 2026:

• Commute Prepare for wet roads and possible delays due to morning thunderstorms and reduced visibility.

• Pet Walks Keep walks short and close to home to avoid heavy rain and lightning risks.

• Running Consider indoor workouts as outdoor conditions will be muggy and stormy.

Warm and muggy conditions with temperatures rising from morning to afternoon.

(Click above to view interactive map)

Afternoon Heat Peaks Amid Persistent Thunderstorms

    Thunderstorms will continue into the afternoon with a higher 60% chance of precipitation. Temperatures will peak around 26°C but the heat index will soar to near 34°C, making it feel much hotter and more uncomfortable. Winds remain light, so the humidity and heat will dominate the atmosphere, creating a sultry and stormy afternoon.

Activities Recommendations for the afternoon of Jul 04, 2026:

• Outdoor Events Plan for interruptions as rain showers and thunderstorms may disrupt activities.

• Cycling Stay hydrated and seek shelter during storms to avoid heat exhaustion and lightning.

• Picnics Consider indoor venues or covered areas to stay dry and cool.

Evening Thunderstorms Cool Down Heat Slightly

    Thunderstorms will persist into the evening with a steady 60% chance of rain. Temperatures will drop to around 23°C but still feel warm at 29°C due to lingering humidity. Light winds will continue, allowing the muggy conditions to linger as the city cools down slowly under stormy skies.

Activities Recommendations for the evening of Jul 04, 2026:

• Evening Walks Postpone or shorten walks to avoid heavy rain and lightning.

• Outdoor Dining Opt for covered or indoor dining options to stay comfortable and dry.

• Commuting Be cautious of wet roads and reduced visibility during evening travel.

Thunderstorms expected from late morning through evening with light winds and moderate rainfall.

(Click above to view detailed chart)

Packing preparations for tomorrow:

• Light, breathable clothing to manage heat and humidity

• Water bottle to stay hydrated throughout the day

• Umbrella or rain jacket for thunderstorms and showers

• Sunscreen for breaks in the clouds

• Hat and sunglasses for sun protection during dry spells

• Portable fan or cooling towel for heat relief

For active alerts in your area, visit your Alerts page. This article was generated with the use of OpenAI and The Weather Network's forecast data. The article was reviewed by the editorial team for accuracy and clarity. For more details visit our AI Code of Ethics. For feedback, visit our survey.