Heat Warning Issued for Greater Sudbury

Heat Warning

Prolonged Heatwave to Impact Greater Sudbury


As of 5:47 AM EDT on Monday, June 17, 2024, a heat warning has been issued for Greater Sudbury. Elevated heat and humidity are expected for several days beginning today, posing significant health risks to residents.

Current Conditions

  • Temperature: 13.3°C
  • Condition: Partly Cloudy
  • Wind: S at 14 km/h
  • Barometric Pressure: 101.2 kPa (Falling)
  • Humidity: 99%
  • Dew Point: 13.2°C
  • Visibility: 24 km

Today’s Weather Forecast

Greater Sudbury will experience a mix of sun and cloud today, with high temperatures and humidity levels.

  • Weather: A mix of sun and cloud with a 30% chance of showers early this morning and a 40% chance of showers this afternoon. There is a risk of thunderstorms this afternoon.
  • Wind: Becoming southwest at 20 km/h this afternoon.
  • High Temperature: 30°C
  • Humidex: 38
  • UV Index: 9 (Very High)

Tonight’s Weather

  • Weather: Mainly cloudy with a 60% chance of showers and a risk of thunderstorms.
  • Wind: Southwest at 20 km/h, becoming light in the evening.
  • Low Temperature: 19°C

Tomorrow’s Weather Forecast (Tuesday, June 18)

Expect continued hot and humid conditions with a mix of sun and cloud.

  • Weather: Becoming a mix of sun and cloud in the morning with a 40% chance of showers in the afternoon. Risk of a thunderstorm in the afternoon.
  • Wind: Becoming south at 20 km/h late in the morning.
  • High Temperature: 32°C
  • Humidex: 39
  • UV Index: 9 (Very High)
  • Night: Clear skies.
  • Low Temperature: 22°C

Midweek Weather (Wednesday, June 19)

Hot and humid conditions will persist with a mix of sun and cloud.

  • Weather: A mix of sun and cloud with a 40% chance of showers.
  • High Temperature: 30°C
  • Night: Cloudy periods with a 30% chance of showers.
  • Low Temperature: 20°C

Health and Safety Advisory

The extreme heat and humidity can affect everyone’s health, with higher risks for older adults, infants and young children, pregnant people, and those with physical and/or mental illnesses or disabilities.

Heat Illness Prevention Tips:

  • Stay Hydrated: Drink plenty of water regularly, even before feeling thirsty.
  • Stay Cool: Seek air-conditioned spaces or shaded areas.
  • Monitor Health: Watch for signs of heat illness, such as swelling, rash, cramps, fainting, heat exhaustion, and heat stroke. Early signs include feeling unwell, fatigue, thirst, and headache. Move to a cooler environment immediately if symptoms appear.
  • Avoid Leaving Anyone in Vehicles: Never leave people, especially children, or pets inside a parked vehicle.

Wardrobe Suggestions

  • Today: Wear lightweight, loose-fitting, and light-colored clothing. Use hats, sunglasses, and sunscreen with high SPF.
  • Tonight: Dress comfortably with light layers suitable for warm temperatures.
  • Tomorrow: Light, breathable clothing is recommended. Keep a hat and sunscreen handy.

Weather Trivia for Greater Sudbury

Did you know? Greater Sudbury’s varied topography, including lakes and forests, can create microclimates where temperatures and humidity levels vary significantly across the region.

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