After a few weeks of hot weather in southwestern Saskatchewan, some cooler temperatures will make their way into the region beginning today.

For the next four days, Environment Canada is expecting daytime highs to be 25 C and colder.

Terri Lang, a meteorologist with Environment Canada, said that the ridge of high pressure that's been hanging over the area for the last couple of weeks has started to flatten out.

"That's the determiner for whether the temperatures are going to be really warm or not," she said. "So we're getting into more of a straight westerly flow and that brings more seasonal temperatures and sometimes even a little bit below."

The 30-year average for daytime highs in this part of August are 26 C and the lows at night time are 10 C. Tonight, Sunday, and Monday will have lows ranging from 7-9 C.

"The other thing that's happening now is we're getting into mid-August and the nights are getting longer time for the air to cool," Lang said. "We're just kind of getting towards that time and I think we're a bit of denial about the fact that summer is winding down a little bit."

The cooler weather won't be bringing any frost with it though according to Lang.

"It can start happening anytime now, of course, we don't see that on the horizon with the weather patterns for the next couple of weeks. Because you need a really cold air mass to come down from the Arctic and for it to be really clear skies."