Albertans sweating it out on account of the heat should probably keep a sweater handy this weekend.
A recent spike in temperature is set to end Friday, with significantly cooler temperatures on the way, according to provincial weather forecasts.
Environment Canada is warning of a potentially severe thunderstorm that will hit southwest Alberta Thursday night, and is expected to bring cool weather with it.
Fifty to 75 millimetres of rain is forecast to fall over regions in southern Alberta, before the storm moves out the area on Friday.
Environment Canada issued a special weather statement for Calgary, Okotoks, High River, Claresholm, Airdrie, Cochrane, Olds, Sundre, Kananaskis, Canmore, Rocky Mountain House and Caroline Thursday afternoon.
According to Accuweather.com, the storm will cool off the southern area of the province significantly.
Albertans have been asked to limit power consumption for the past two days, after a combination of hot weather, high demand and limited wind put pressure on the province's energy input, reports the Edmonton Journal.
People are asked to turn off lights and electrical appliances when not in use, close curtains and blinds, delay using major appliances until after 7 p.m. and minimize the use of air conditioners.
It's likely the coming temperature shift will help top up the province's energy reserves.
Calgary will see the temperature drop to 18 C Friday, and can expect a weekend low of 15 C on Saturday. Rain is forecast for both days, before warming up slightly on Sunday.
Edmonton will see temperatures in the low 20s over the weekend, with mostly overcast skies.
Good news for southern Alberta, however -- temperatures are expected to return to the 20s starting Monday.
Also on HuffPost