Expect cool weather to dominate

Issued: Monday, Oct. 12, 2015 · Covering: Oct. 14 – Oct. 21, 2015

Reading Time: 2 minutes

Published: October 15, 2015

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This map shows the total amount of precipitation that fell across the Prairies during the 30 days ending Oct. 8. This was a pretty dry period across agricultural Manitoba, with most regions seeing less than 30 mm; the Interlake was especially dry, with amounts in the five- to 10-mm range. Areas around and just south of Morden saw amounts in the 50-60 mm range thanks to a late-September thundershower. Over the rest of the Prairies the only “wet” area was in Saskatchewan, where some significant amounts fell from the southwest corner northeastward toward Prince Albert.

Warm, dry weather moved in over the first half of the Thanksgiving long weekend as expected, but after that things kind of went a little awry. A strong area of low pressure helped to boost temperatures into the low to mid-20s, but instead of tracking through northern Manitoba, last weekend’s low took a much more southerly route, bringing showers and even the odd thundershower to southern and central regions, not to mention some very strong winds.

By the start of this forecast period, that strong area of low pressure will be over northern Quebec, placing our region in a northwesterly flow of cool air. A second weaker area of low pressure will rotate around the large Quebec low, bringing clouds and showers to our region late on Wednesday and into Thursday. A large area of high pressure will begin to build in on Friday and this high should bring plenty of sunshine right through the weekend and into the early part of next week. Even though we’ll see plenty of sunshine with this high, temperatures will be on the cool side, with daytime highs only expected to be around the 10 C mark and overnight lows near to slightly below 0 C.

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An area of low pressure is forecast to develop to our southwest early next week and then track toward the Great Lakes by mid-week. Most of the precipitation from this low should stay to our south but southern and central regions will likely see clouds with the odd shower late Monday and into Tuesday. Temperatures will moderate a little bit ahead of this low, with highs on Monday expected to be around 14 C. Weak high pressure will build back in by mid-week, bringing a return to sunny and seasonable weather.

Usual temperature range for this period: Highs, +6 to +16 C; lows, -4 to +5 C.


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About the author

Daniel Bezte

Daniel Bezte

Co-operator contributor

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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