Calgary Stampede Weather Outlook: Heat Warning Continues


Prolonged Heat Wave for the Calgary Stampede

Calgary is experiencing a long-duration heat event, with temperatures reaching up to 37°C today and Wednesday. Overnight lows in the mid-teens to low-20s will offer little relief from the heat. Cooler temperatures are expected to arrive in northwestern Alberta on Thursday, but Calgary will continue to experience high temperatures through much of next week.

Current Weather Conditions

Observed at: Calgary Int’l Airport
Date: 4:00 AM MDT Wednesday 10 July 2024
Condition: Mainly Clear
Pressure: 101.2 kPa (falling)
Temperature: 19.4°C
Dew point: 15.0°C
Humidity: 76%
Wind: SW at 11 km/h
Visibility: 19 km

Currently, Calgary is at a warm 19°C with a clear sky. Humidity is at 76%, and there is a light southwest wind blowing at 11 km/h.

Today’s Forecast: Sunny with a Risk of Thunderstorms

Morning to Afternoon

The day will start sunny, transitioning to a mix of sun and cloud in the afternoon with a 30 percent chance of showers and a risk of thunderstorms. Winds will shift to the west, reaching 20 km/h and gusting to 40 km/h near noon. The temperature will climb to a high of 35°C, with a humidex of 36°C. The UV index is very high at 8, so sun protection is essential.


Partly cloudy with a 30 percent chance of showers and a risk of thunderstorms early in the evening. Clearing late in the evening, with winds from the west at 20 km/h gusting to 40 km/h, shifting north and becoming light near midnight. The low will be 19°C.

Extended Forecast for the Calgary Stampede

Thursday, 11 July

Sunny in the morning, with a mix of sun and cloud in the late afternoon and a 30 percent chance of showers. There is a risk of thunderstorms late in the afternoon. Winds will become northeast at 20 km/h near noon. The high will be 30°C, with a humidex of 32. The UV index will be high at 7. Clear skies are expected overnight with a low of 14°C.

Friday, 12 July

Sunny conditions with a high of 26°C. Clear skies will continue into the night with a low of 14°C.

Saturday, 13 July

A mix of sun and cloud with a 60 percent chance of showers. The high will be 25°C. Clear skies are expected overnight with a low of 15°C.

Sunday, 14 July

Sunny skies are anticipated with a high of 27°C. Cloudy periods with a 30 percent chance of showers are expected overnight, with a low of 12°C.

Heat Warning Precautions

Residents and visitors should take the following precautions to protect themselves from the heat:

  • Reschedule outdoor activities: Plan activities for cooler parts of the day.
  • Take breaks in cool spaces: Spend time in air-conditioned or shaded areas.
  • Stay hydrated: Drink plenty of water and avoid alcohol and caffeine.
  • Check vehicles: Ensure no person or pet is left in a parked car.
  • Monitor health: Watch for symptoms of heat-related illnesses such as high body temperature, lack of sweat, confusion, and fainting.
  • Look out for vulnerable individuals: Pay special attention to infants, children, seniors, those with chronic illnesses, and outdoor workers.

For more heat health advice, visit Alberta Health Services.

Historical Weather Data

On this date, Calgary has experienced a record high temperature of 36.5°C and a record low of 4.8°C.

Wardrobe Suggestions

For today, light and breathable clothing is recommended due to the extreme heat. Sun protection, such as sunscreen, sunglasses, and a hat, is essential. Stay hydrated and seek cool places when possible. Evening wear should remain light due to the warm overnight temperatures.

Interesting Weather Fact

Did you know that Calgary, known for its annual Calgary Stampede, often experiences significant temperature swings? This heat wave is a reminder of the extreme weather conditions that can occur in the region.

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