As summer unofficially draws to a close it looks like the warm and relatively dry weather we’ve been seeing will continue. Last issue’s forecast played out fairly well, with the large western low drifting by to our north late in the weekend and the trailing cold front bringing some fairly strong thunderstorms late last Sunday.
For the first half of this forecast period we’ll see an upper ridge of high pressure move over our region, bringing with it plenty of sunshine along with nice warm late-summer temperatures. Expect to see daytime highs in the mid- to upper 20s with overnight lows in the low to mid-teens. Winds will start off on the light side on Wednesday and Thursday and become fairly breezy from the south on Friday and Saturday, as a large area of low pressure begins to push in from the west.
This large area of low pressure looks like it will follow the same basic path as the previous couple of lows, tracking northeastward into northern Manitoba. The strong southerly flow ahead of the low late in the week will help to boost both temperature and humidity levels. Some regions will likely make it into the low 30s on Friday or Saturday, with dewpoints making it into the upper teens. A cold front is then forecast to push through sometime late Saturday or early Sunday. This front will likely trigger thunderstorms and given the amount of heat and humidity around, some of them will likely be severe.
Behind the front we’ll see high pressure build in from the west. This high will give us sunshine and cooler temperatures to end the long weekend and start next week. Expect daytime highs to be in the low 20s, with overnight lows around the 10 C mark.
Usual temperature range for this period: Highs, 17 to 27 C; lows, 5 to 14 C.