Riding the edge of a heat wave

Last week’s forecast played out pretty much as expected, with the exception of a little more cloud and slightly cooler temperatures on Sunday and Monday, but after the dry weather and all the heat last week I think it was actually appreciated!

It looks like the heat will be back on for most of this forecast period as a ridge of high pressure rebuilds across the centre of North America. As with last week’s ridge, we’ll once again be on the northern edge of this high pressure, so, while we should see plenty of sunshine, thunderstorms on any given day can’t be ruled out. It currently looks like Thursday to Saturday will be the warmest, with high temperatures likely to be in the low to possibly even mid-30s for highs. Overnight lows also look to be fairly mild, with most nights only cooling off to around 20 C.

There is one fly in the ointment, and that is an upper area of low pressure that is forecasted to meander across the north-central Prairies. This low will likely bring more clouds than sun to northern regions, along with a good chance of showers and thunderstorms. Currently, the models are keeping this low to our north, but should it track farther south, then we’ll see much cooler and cloudier conditions over the weekend.

We will see a good chance of showers or thundershowers on Monday as this passes by. Along with the increase in clouds, we’ll also see cooler air move in, with highs only expected to be in the low to mid-20s. Temperatures are expected to slowly warm during next week, with highs during the second half of the week expected to be in the mid- to upper 20s as the ridge of high pressure tries to redevelop.

Usual temperature range for this period

Highs: 23 to 31 C Lows: 10 to 17 C

About the author

Co-operator contributor

Daniel Bezte

Daniel Bezte is a teacher by profession with a BA (Hon.) in geography, specializing in climatology, from the U of W. He operates a computerized weather station near Birds Hill Park.

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