As the summer season kicks into high gear, the weather in some provinces is going through some serious mood swings.

While the high in Winnipeg hit 31 C on Monday, it felt more like 38 C with the extreme humidity. The heat is greater than what’s typically seen in the city, which has an average high of 25 C.

Meteorologist Jay Anderson told CTV Winnipeg that the warmth in the Prairie province is a result of heat from the U.S. making its way across the border.

He expects the high humidity to continue until mid-week before a weak cold front makes its way into Manitoba.

“It won’t do very much for the temperature but it will drop the humidity,†Anderson said.

Meanwhile, one air conditioning repair company told CTV that they’ve seen their business grow almost seven times since the heat set in. Meanwhile, Winnipeg emergency services said they responded to more than a dozen heat exhaustion calls over the long weekend.

According to Environment Canada, temperatures are expected to reach the high 20s and low 30s for the rest of the week, while the lowest temperature will be about 15 C.

The heat and humidity that gripped Ontario and Quebec for much of June is expected to continue through the first week of July. Environment Canada reported Monday that the daily high temperatures in Toronto will linger in the low-to-mid-30s for much of the week, until Sunday, when the high is expected to be closer to the historical average at 26 C.

In Montreal, where the average maximum for this time of year sits around 26 C, the daily high for the week is expected to range from the high 20s to low 30s with plenty of sunshine in the forecast.

Health professionals recommend that those sensitive to the heat, such as young children and the elderly, avoid going outside in the afternoon, drink plenty of water and stay in air conditioned environments if possible.

Over in Halifax, residents weren’t so lucky with the weather during the holiday Monday. A severe thunderstorm warning issued for the region was cancelled in the evening, following a day rocked by thunder and lightning storms, as well as hail. The extreme weather caused significant power outages for much of the afternoon.   

Rain is expected for most of the week and daily high temperatures will hover in the mid-20s, slightly warmer than what’s typically experienced this time of year.

But not all Canadians are basking in the summer heat.

In Vancouver temperatures have dipped lower than usual with a 14 C high for Monday, while the average maximum temperature for early July has hovered around 21C. Temperatures are expected to rise as the week progresses, eventually hitting 24 C by next Sunday.

Environment Canada has said to expect a hot, dry summer ahead.

In a recent interview with Â鶹´«Ã½ Channel, senior climatologist Dave Phillips said he expects to see some cooler days in July and August, "but come Labour Day when we crunch our numbers we'll be showing something that looks like it was warmer than normal."

However, he added that he doesn’t expect the weather to completely mimic last summer’s record-breaking heat.

"I don't think it will be as warm as last year," he said. "But we think it will be warmer than normal from coast to coast to coast ... and maybe drier than normal, as well."

With a report from CTV Winnipeg’s Rajeev Dhir