Arctic Chill Grips Winnipeg

Seasonably cold weather will stay entrenched over southern Manitoba for the next few days.

Cold Arctic air will continue to pour southwards across the eastern Prairies this week. The Polar Vortex will sit over Hudson Bay for much of the week, maintaining a strong cross-polar flow. This will keep a steady stream of cold air streaming from the High Arctic down to the eastern Prairies that then curls off to the southeast across the northern United States.

This will keep temperatures cold, but nowhere near record values. Winnipeg will see a high near -17°C today with light winds. Skies will be mainly sunny through the day, but cloud will spread in tonight alongside a weak low moving into the region. Winnipeg will see clouds with flurries through the first half of the night with winds increasing out of the northwest to 30 km/h. Skies will clear out for the second half of the night as temperatures drop to a low near -27°C. Wind chill values will dip into the mid-minus 30s.

GDPS 500mb Wind Speed Forecast valid 21Z Tuesday December 10, 2019
The Polar Vortex will support a cross-polar flow for the next few days, bringing below-seasonal temperatures to the eastern Prairies.

Skies will clear on Tuesday bringing plenty of sun to the city, but it will be downright cold with a daytime high near -20°C. Winds will be light out of the west. Temperatures will drop to a low near -28°C on Tuesday night with light northwest winds. Winnipeg will see sunny skies with a high near -20°C on Wednesday as an Arctic high moves across the region. Winds will be out of the west-southwest near 20 km/h.

Some cloud will push into the region on Wednesday night as more seasonal temperatures begin working into the region. The city should see a low near -25°C.

Long Range Outlook

The second half of the work week will see temperatures returning to seasonal values with plenty of cloud cover. Light snow is possible later Thursday into Friday morning. The weekend should bring mixed skies with highs of -15 to -10°C and overnight lows in the mid-minus teens.

Today’s seasonal daytime high in Winnipeg is -9°C while the seasonal overnight low is -18°C.

Seasonably Cold Temperatures Continue

Winnipeg will continue to see seasonably cold temperatures through the first half of the work week.

A persistent north-northwest flow aloft will sustain the cold weather in the region through the upcoming work week. To start the week, an Arctic ridge will move into the province. This will keep temperatures cool in Winnipeg with a high of just -11°C. Skies should stay mainly sunny today with westerly winds near 20 km/h. Temperatures will head to a low near -18°C tonight with clear skies and light winds.

Temperatures will remain cold in southern Manitoba today with daytime highs in the -10 to -15°C. Average overnight lows for the region at this time of year are around -10°C.
Temperatures will remain cold in southern Manitoba today with daytime highs in the -10 to -15°C. Average overnight lows for the region at this time of year are around -10°C.

Temperatures will warm slightly on Tuesday as the Arctic ridge moves off to the east, but it may end up feeling colder. A moderate southerly wind will develop, increasing to 40 gusting 60 km/h by midday. Skies will become increasingly cloudy later in the day as warmer air grazes the region. Temperatures will climb to a high near -7°C, then fall to a low near -12°C with mostly cloudy skies on Tuesday night. The winds will ease in the evening followed by a chance of flurries overnight.

Wednesday will bring mixed skies to the region as a cooler northwesterly flow develops again. Temperatures will climb to a high near -5°C with northwest winds around 20 km/h. A weak ridge moving through on Wednesday night will bring mainly clear skies and light winds as temperatures drop to a low near -11°C.

Long Range Outlook

A warm-up will begin in the second half of the week as the stagnant upper air pattern begins to break down. Thursday may bring highs back towards the freezing mark, followed by cooler temperatures again on Friday.

Heading into the weekend, a major shift may be in the cards back towards milder temperatures. Highs back near or just above 0°C look likely this weekend and into the first half of next week. That warmth will likely come with more cloud and a chance of a wintery mix of precipitation at some point early next week.

Today’s seasonal daytime high in Winnipeg is -1°C while the seasonal overnight low is -9°C.

GDPS 2m Temperature Forecast valid 06Z Monday November 11, 2019

Light Snow Ushers In Arctic Reinforcements

Southern Manitoba will see more light snow on Friday night and Saturday, ushering in another blast of Arctic air.

A low pressure system moving across the province will bring some milder air into the province alongside more light snow. Winnipeg will see temperatures climb to a high near -3°C today with southeast winds picking up into the 20 to 30 km/h range. Skies will stay mostly cloudy through the day.

As the low centre moves into the Red River Valley this evening, a shot of snow will move through the region. The snow should move through fairly quickly with a couple centimetres possible. The rest of the night should bring light winds and cloudy skies as temperatures dip to a low near -6°C.

Saturday will bring more cloud with highs once again climbing to around -3 or -2°C. There will be a chance for scattered flurries through the day. An Arctic ridge will begin pushing into the region and strengthen northwest winds into the 20 to 30 km/h range. Skies will begin to mix out overnight and the chance for flurries will shift towards streamers coming off of the lakes. Temperatures will dip a degree or two below -10°C on Saturday night as a reinforcing shot of Arctic air pushes southwards.

Temperatures will barely recover on Sunday with the city only seeing a high near -8°C. Northwest winds near picking up to 30 km/h will keep things feeling cold. There should be a bit of sunshine mixed in with the cloud across the region with a chance for some isolated flurries, particularly in the lee of the lakes. Winnipeg should see partly cloudy to mixed skies on Sunday night with a low near -17°C.

Long Range Outlook

Another couple cold days will kick off next week as the Arctic air moves through, but a transition into more seasonal conditions should arrive midweek. No significant snowfall is in the forecast.

Today’s seasonal daytime high in Winnipeg is +1°C while the seasonal overnight low is -7°C.

RDPS 2m Temperature Forecast valid 12Z Thursday November 7, 2019

Cool Weather And Flurries Continue

Winnipeg will see more of the same through the remainder of the week with temperatures well below seasonal values and occasional snow.

Another Arctic ridge building into the province will bring more cold weather through the rest of the week. As it approaches today, brisk northwest winds near 30 km/h will keep temperatures cold with a high near -5°C. Winnipeg will see mixed skies with a continued chance for flurries that will be streaming off of Lake Manitoba. The winds will ease tonight as the ridge moves into the region. Skies will clear overnight with temperatures dipping to a low near -16°C.

Winds will stay light through the day on Thursday, gradually shifting to the south later in the day. The city will again see a high near -5°C today, but skies will be partly cloudy (a welcome change!). A warm front will approach the region on Thursday night, bringing cloud into the region and keeping overnight lows milder. Winnipeg will see a low near -8°C overnight with winds increasing out of the south to around 20 km/h.

The warmer air arrives for Friday in southern Manitoba with highs climbing back to around the -1°C. Still below seasonal for this time of year, but only slightly. Skies will be cloudy with a southerly wind of 20 to 30 km/h easing in the afternoon as a trough moves into the Red River Valley. There will again be a chance for a bit of light snow as well, but any notable accumulation is unlikely. Skies will stay cloudy with a continued chance of light snow on Friday night. Temperatures will dip to a low near -6°C.

Long Range Outlook

The near-seasonal conditions will stick around for Saturday with a slight chance of some light snow as well. A cold front will move through the region on Saturday and open the door for a renewed blast of Arctic air. Highs will be nearly 10°C colder on Sunday with a high near -10°C. Overnight lows will follow suit, too, dropping into the mid minus teens. The first half of next week looks to continue the cold weather before a slight moderation occurs mid-week.

Today’s seasonal daytime high in Winnipeg is 2°C while the seasonal overnight low is -6°C.