An early September heat wave is pushing its way across the Prairies, bringing temperatures well above the seasonal mark, potentially breaking heat records in Alberta.
A ridge of high pressure building over the Prairies on Sunday will continue throughout the beginning of the week, bringing temperatures over the 30°C mark to areas in both Alberta and Saskatchewan, including Calgary and Medicine Hat.
Those who are prone to heat related illnesses will be most vulnerable in these well above seasonal temperatures. There will likely be some relief from the heat at night due to longer periods of darkness, helping temperatures dip into the mid-teens through the overnight hours.
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The heat moves in on Sunday, bringing temperatures in the low 30’s for much of southern Alberta and Saskatchewan. The average daytime high for Calgary at this time of year is around 20°C, so these temperatures will make it feel closer to mid July rather than early September.
If Calgary overachieves and reaches temperatures of 33°C, it would become one of the top 3 warmest September days, close to the the record of 33.3°C recorded on September 1, 1967. So far, Calgary has recorded 11 days over 30 degrees in 2024, including a record-breaking 8 consecutive day run in July.
The warmest temperatures will be felt in Medicine Hat, where temperatures are forecast to soar as high as 34°C.
The warmest day is likely to be Monday, as the ridge spreads across southern Saskatchewan, bringing over 30 degree temperatures to Saskatoon and Regina. The warm temperatures will linger across southeastern Saskatchewan into Tuesday, before more seasonal temperatures move in on Wednesday.
Heat safety
In heat events such as this, it is crucial to remember to drink plenty of water, avoid strenuous outdoor activity, and check in on those who are at the highest risk of developing heat-related illnesses.
Remember to take frequent breaks while working outside, wear a hat while outdoors, and avoid drinking caffeine and alcohol as they can cause dehydration.
Stay tuned to The Weather Network for more forecast updates across the Prairies.