Tag: Below-Normal Temperatures

Cool Weather Continues in Winnipeg

Brad 1 Comment

A stagnant weather pattern will continue to funnel Arctic air southwards into the Prairies, continuing the cool temperatures across southern Manitoba.

ECMWF 2m Temperature Forecast valid 00Z Wednesday November 1, 2023.
It will be a cool night across southern Manitoba as a ridge of high pressure slides through the region.

A slow-moving vortex over Hudson Bay continues to support an outbreak of Arctic air across the eastern Prairies this week. Between this system and a high-amplitude upper ridge over the west coast, northerly winds through the region will be maintained for a few more days yet.

As a result, temperatures will stay stuck below seasonal values. Today will be the coldest day of the week, the cold air bolstered by the passage of a disturbance yesterday. The high in Winnipeg should reach around -6 °C with temperatures dipping to about -8 to -10 °C by the time kids start heading out to prowl the neighbourhoods for Halloween.

Heading through the rest of the work week, the city will see daytime highs close to the freezing mark and overnight lows dipping into the -5 to -10 °C range. Skies will be mixed over the coming days and winds, aside from a bit of a breeze this evening, will be light.

No notable snowfall is expected, but a few light flurries could be possible through the week.

Long Range Outlook

Little change is expected to the pattern beyond weakening slightly in the days ahead. This will mean that daytime highs should continue to hover at or just below freezing into next week along with overnight lows dipping below -5 °C.

There are some early indications that some snow may be possible early next week; we’ll continue to keep an eye on that system as it develops.

Today’s seasonal daytime high in Winnipeg is 4 °C while the seasonal overnight low is -5 °C.

Cool Conditions Ahead for Winnipeg

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The broad pattern change that began this week will establish itself by the weekend, bringing a prolonged period of seasonably cool conditions to the region.

RDPS 2m Temperature Forecast valid 21Z Saturday October 28, 2023
Seasonably cool temperatures will flood the Prairies this weekend with daytime highs below freezing in most places.

The weather pattern across southern Manitoba will be dominated by a slow-moving upper trough extending from an Arctic vortex over Canada’s eastern Arctic. This will ensure a pipeline of cooler air sourced from the Arctic sits pointed at the region right into next week, delivery seasonably cool temperatures to the area.

It will be mainly cloudy in Winnipeg today with some morning snow tapering off as a disturbance tracks off the the east. In its wake, northerly winds up to 30 gusting 50 km/h will pump cooler air southwards, supporting bands of lake-effect flurries off of both Lake Manitoba and Lake Winnipeg. This will result in a few flurries lingering through the day, as well as some more concentrated bands of snow in the lee of the lakes. Temperatures will climb to around the freezing mark, then dip down into the -5 to -10 °C overnight as skies clear.

Sunnier skies will return for Saturday with highs in the -5 to 0 °C range with southwesterly winds in the 20 to 30 km/h range. A bit of cloud will push back into the region on Saturday night, but lows will still dip down close to -10 °C.

On Sunday, there will likely be a bit more cloud around with just a slight chance of some flurries. Temperatures will again climb into the -5 to 0 °C range with westerly winds again near 20 km/h.

Long Range Outlook

Highs will likely bounce back to the freezing mark on Monday with a passing disturbance that will also bring some light snow to the region, then cooler weather returns for the rest of the week with highs in the -5 to 0 °C range and overnight lows closer to -10 °C.

For Halloween, it’s looking like it will be a partly cloudy day with a cool high near -5 °C. By the time kids start heading out in the evening, temperatures will likely have dipped into the -5 to -10 °C range with southwest winds near 15 km/h.

Today’s seasonal daytime high in Winnipeg is 6 °C while the seasonal overnight low is -3 °C.

Snow Gives Way to Sunny but Cool Weekend

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Snow will come to an end over the region today as the storm that’s been stalled over the region finally moves east. Sunnier skies will return for the weekend as a high pressure system settles over the province.

RDPS MLSP & 10m Wind Forecast valid 18Z Saturday April 22, 2023
A broad area of high pressure will settle across the eastern Prairies this weekend.

Snow continues to wrap into southern Manitoba this morning, but conditions will improve through the day. As the low responsible for our weather continues to trundle eastwards into Ontario, snow gradually weaken and taper off over southern Manitoba. It will be a bit of a slick and slippery morning as temperatures dip below zero and combine with fairly strong northerly winds near 50 gusting 70 km/h.

Temperatures will rebound to a high of only around +2 °C.

Skies will clear out tonight as winds ease to around 20 km/h. Temperatures will dip to a low in the mid-minus single digits.

For th weekend, a ridge of high pressure will build into the region and bring cool but settled conditions. Winnipeg and area will see variable cloudiness through the weekend with daytime highs in the mid- to upper-single digits. Overnight lows will likely dip into the -5 to -10 °C range.

Long Range Outlook

Next week will start off with quieter weather as temperatures gradually move towards more seasonal values. Some rain may be possible across the region late next week.

Today’s seasonal daytime high in Winnipeg is 13 °C while the seasonal overnight low is 0 °C.

Temperatures Gradually Easing Back Towards the Freezing Mark

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Below-seasonal temperatures will continue in Winnipeg this week as temperatures gradually ease back towards the 0 °C mark. The cool conditions and strengthening sun will help flood conditions a bit by gradually evaporating water from the snow pack over the region.

RDPS 2m Temperature Forecast valid 21Z Thursday March 30, 2023
Temperatures will begin a push back towards seasonal values later this week.

The coldest night of the week is now behind us, and the Arctic high responsible for it is gradually shifting off to the southeast. Temperatures will remain cool today with highs once again near -10 °C and lows dipping back to around the -20 °C mark tonight. At least we’ll see plenty of sunshine!

After that, a gradual warm-up will begin as the Polar Vortex begins to weaken over Hudson Bay. This won’t mean a huge warmup for us though, because rather than shifting back into the High Arctic, the Polar Vortex will still stay relatively far south and keep a northwesterly flow over the region. Daytime highs will jump back into the -5 to 0 °C range mid-week with overnight lows in the -10 to -15 °C range.

The region will see some cloud on Thursday as a low pressure system drops out of the Northwest Territories into central Manitoba. Any snow will likely remain well to the north of Winnipeg, perhaps not even moving out of central Manitoba. More sun should return to the region on Friday, but some cloud might work its way into the region as a low passes by to the south of the province.

Long Range Outlook

Heading into the weekend, temperatures will finally reach freezing, with highs of above zero even possible. A system passing through the region on Sunday will bring some more cloud to the region along with a chance of snow.

Today’s seasonal daytime high in Winnipeg is 4 °C while the seasonal overnight low is -7 °C.