An Arctic high building into the Prairies will bring seasonably cold temperatures and a bit more sunshine to southern Manitoba.
Cold temperatures will sit entrenched across the Prairies this week.
Colder temperatures are the story this week as a lobe of the polar vortex slumps into the northern Prairies. It will bring with it a persistent northerly flow that will build an Arctic ridge across the Prairies through the week.
Disturbances grazing by the region will bring a mix of sun and cloud to the region this week, but temperatures will be uniformly cold. Daytime highs in Winnipeg will sit near the -20 °C mark through the rest of the week with overnight lows generally in the -25 to -30 °C range.
With such cold overnight lows, its possible that the region will see extreme cold warnings at times this week for wind chill values dipping to the -40 mark.
No significant snow will fall across the region this week, but a weak disturbance passing by to the south will spread some snow across the region on Wednesday. Accumulations will be minimal with just a centimetre or two possible by the time it tapers off overnight.
Long Range Outlook
Cold conditions will continue into the Christmas weekend, but by Sunday the worst should begin to break. Heading into next week, warmer weather will move into the region along with some more light snow.
Today’s seasonal daytime high in Winnipeg is -11 °C while the seasonal overnight low is -21 °C.
A surge of very cold Arctic air is pushing through Manitoba, but it will be short-lived with a return to seasonal temperatures just around the corner.
Bitterly cold temperatures will settle over southern Manitoba overnight into Wednesday morning. Temperatures form southeastern Saskatchewan across southern Manitoba will drop into the -30 to -40 °C range.
The Polar Vortex has shifted from the High Arctic southwards into Hudson Bay, sending a surge of very cold Arctic air into the Prairies. A weak disturbance will round the base of the Polar Vortex today, spawning a weak low in North Dakota. This low will track eastwards with an inverted trough that runs northwards into Manitoba.
This system will spread cloud and light snow across southern Manitoba today. Most areas will see 1 to 3 cm of snow by the time it tapers off this evening. It will also be cold, with temperatures struggling to rebound into the -15 to -20 °C range, bolstered only by cloud cover.
Skies will clear out tonight as an Arctic high barrels into the province. With clear skies, temperatures will plummet tonight. Winnipeg will see a low in the -30 to -35 °C early Wednesday morning. Fortunately winds will be light, so wind chill won’t be a major factor, inasmuch as it matters when its already so cold.
With the high in place, Wednesday will be clear and cold. Temperatures will recover to around -20 °C by late in the afternoon with increasing southerly winds. Wind chill values will sit in the -30 to -35 range by the evening.
Fortunately, those breezy southerlies are a sign of warmer weather beginning to work its way into the region. Temperatures will rise towards the mid-minus teens on Wednesday nights, the continue climbing towards -10 °C on Thursday.
There will be a bit of cloud around on Wednesday night, but Thursday should bring mainly sunny skies.
Temperatures will head to a low in the mid-minus teens on Thursday night with increasing cloudiness.
Long Range Outlook
Temperatures will continue to warm on Friday, reaching a high close to -5 °C with mostly cloudy skies. Some light snow is likely on Friday night, but accumulations will be minimal.
That will mark the transition to a much cloudier, but warmer pattern. The region will see plenty of cloud cover through the weekend and into next week, but daytime highs will climb close to the freezing mark.
Some light snow will be possible on several days, beginning Sunday through Tuesday, with a gradual return to near-seasonal temperatures during that period.
So, the forecast is the ol’ Winnipeg dilemma: bone-chilling cold and plenty of sun, or pleasant winter warmth with socked in cloud cover. Hopefully there’s a little bit to like in the forecast for everyone.
Today’s seasonal daytime high in Winnipeg is -8 °C while the seasonal overnight low is -17 °C.
The Arctic ridge bringing seasonably cold temperatures to southern Mantioba will head out later this week. In its wake? Much warmer weather will return as temperatures climb back above seasonal values.
The colder weather will hang on for one more day in southern Manitoba, then warmer air will push into the region from the west.
Today will bring more cold weather; the Arctic high hasn’t quite left the region yet and will keep highs in the low single digits. Winds will be light and skies will be mostly sunny, so it shouldn’t be a bad day overall.
Beginning Wednesday, the Arctic high will start moving out of the region and the broader long-wave pattern will begin to break down. This will cut off the pipeline of Arctic air that’s been entrenched over the region and begin to allow milder air from the west to build in.
Wednesday will bring near-seasonal highs back to Winnipeg with a high near 10 °C. The winds won’t even be too much of an issue with light southerlies of 15 to 25 km/h. There will be a bit more cloud than Tuesday, so expected partly cloudy to mixed skies. Temperatures will still likely fall below zero again on Wednesday night.
On Thursday, a weak disturbance will drop southeastwards through the province. Temperatures will be similar to Wednesday, but most areas will see a mainly cloudy day. The cloud cover will keep it warmer on Thursday night with a low in the mid-single digits.
Long Range Outlook
The sun will reappear on Friday across southern Manitoba while a potent low pressure system begins to develop in Alberta. As it tracks eastwards over the weekend, it will draw warmer air into southern Manitoba. Daytime highs will likely climb into the upper teens by Sunday with increasing southeasterly winds.
It should stay dry through the weekend, but as the system passes on Sunday night, the weather will turn more unsettled. Rain and/or snow will be possible to start off next week as cooler temperatures once again push back into the region.
The timing of this system could change a bit in the days ahead given how far out it is, but the general trend of warming into the weekend, then a notable cool-down by the middle of next week looks fairly reliable.
Enjoy nicer late-fall weather ahead!
Today’s seasonal daytime high in Winnipeg is 9 °C while the seasonal overnight low is -1 °C.
The cleanup is underway across many areas of Manitoba that were pummelled with strong winds and 30–60 cm of snow. The weather will mostly co-operate over the coming days with cool temperatures and a bit more snow.
The entire eastern Prairies will see very cool mid-April conditions in the wake of the storm exiting the region.
The entire eastern Prairies will see very cool mid-April conditions in the wake of the storm exiting the region.
Lingering light snow will taper off today as the storm continues to wind down over the region. Winds will continue to be breezy out of the northwest at 30 gusting 50 km/h. Most notable today will be the temperatures; they will stay well below seasonal values with a high in Winnipeg near -5 °C. Skies should finally clear out this evening with temperatures heading to a low near -10 °C.
A high pressure system moving into the province will bring clear skies on Saturday. Temperatures will continue to be cool with a high near -5 °C. Lows on Saturday night will fall into the mid-minus teens. Another low pressure system approaching the province will spread cloud cover into the region by Sunday morning.
Winnipeg and area will see cloudy skies on Sunday with light snow moving in for the afternoon and evening. Highs will reach close to 0 °C with southeasterly winds picking up to 30 km/h.
A low pressure system will spread snow along the Trans-Canada Highway corridor on Sunday with 10–15 cm near the international easing to 5–10 cm for many areas south of the Trans-Canada Highway corridor.
A low pressure system will spread snow into southern Manitoba on Sunday.
This system will spread another swath of snow across southern Manitoba, with 10–15 cm near the international border easing to 5–10 cm for many areas south of the Trans-Canada Highway corridor. The main uncertainty with this system is how far north it will push; relatively sharp changes in snowfall totals will mean small shifts north or south can substantially impact the amount of snow a location will see.
Snow will taper off overnight with the sun repeating for Monday. Daytime highs to start the new week will hover around 0°C.
Long Range Outlook
Temperatures will moderate only slightly next week, partly due to a cooler air mass and partly due to the snow cover across the region. Highs should climb above freezing for next week, but conditions may also turn unsettled.
A progressive system is forecast to move through the region mid-week, potentially bringing another shot of snow to the region. Early model guidance suggests that 10–15 cm is possible with this system, but it’s early and lots can change between now and then. It will likely fall as snow, but there may be a little bit of rain mixed into it.
The region will see a couple quiet days, then for the weekend some weather models are suggesting that another Colorado Low system may develop. This one wouldn’t bring more snow to the region; rather, it would likely result in a surge of warm air northwards and could result in rain for the region. But, being so far out, it shouldn’t be taken as much more than hand-waving conjecture at this point.
As a generalization, beginning Sunday, it looks likely that the region will see some additional precipitation every 2–3 days for a while. By next weekend, the region is more likely to see rain than snow as warmer, almost summer-like, temperatures begin to push towards the region.
Today’s seasonal daytime high in Winnipeg is 10 °C while the seasonal overnight low is -2 °C.
