Arctic Chill Moves In This Weekend

Much colder weather will arrive in southern Manitoba this weekend as a blast of Arctic air moves into the Prairies.

Before the cold, though, Winnipeg will see a couple days of near-seasonal conditions. A couple of weak systems crossing the region will bring partly cloudy skies and highs on the milder side of the minus single digits. Today will start off a bit breezy with southeast winds near 30 gusting 50 km/h, but the wind will ease through the day.

Saturday should be a pleasant day with light winds as a ridge of high pressure moves over the region.

The real change in the weather will begin on Saturday night. An Alberta Clipper will cross the Prairies Saturday and Sunday while a potent low pressure system strengthens over Hudson Bay. This system will bring some light snow to southern Manitoba on Saturday night as a cold front surges through the province. Behind this front, the clipper and Hudson Bay system will work together to funnel the coldest surge of Arctic air Winnipeg has seen so far this season.

Temperatures will fall to around -7 °C by Sunday morning, then continue to drop to around -10 °C through the day. Winds will stay out of the northwest at 30–40 km/h through the day as Arctic air pushes into the region. Winnipeg may see a few more flurries through the day with morning cloud cover replaced by streamers from Lake Manitoba.

RDPS 2m Temperature Forecast valid 12Z Monday November 22, 2021
Winnipeg’s first taste of bitter winter cold will come on Monday morning with temperatures dipping to -20 °C or colder.

The wind will ease on Sunday evening as a ridge of high pressure moves into the province. Temperatures will dip to a low near -20 °C on Sunday night with mainly clear skies.

Long Range Outlook

Cooler weather looks to stick around next week as winter settles into Manitoba. The region will likely see variable cloudiness through the week, but more snow looks largely limited to Wednesday when another disturbance moves through the province. While no bitterly cold temperatures are in the forecast, the region will be heading into a pattern of near- to below-seasonal temperatures.

Today’s seasonal daytime high in Winnipeg is -3 °C while the seasonal overnight low is -11 °C.

Mid-Week Freeze In Late-Season Arctic Blast

An Arctic ridge will bring a blast cold air to southern Manitoba resulting in a late-spring freeze in many areas. After a cold Wednesday night, temperatures will gradually warm towards seasonal values.

A broad Arctic ridge will lay sprawled across Manitoba today, bringing seasonably cool weather to the region. Winnipeg will see a high of only 11 °C with a north wind easing to around 20 km/h in the afternoon. Skies will clear tonight with easing winds as the main ridge axis moves into southern Manitoba. Temperatures will dip below freezing through the Red River Valley overnight, potentially reaching as cold as -4 or -5 °C. In Winnipeg, there will likely be a larger range of temperatures going from slightly below freezing near the city core to around -3 or -4 °C on the outskirts (particularly on the north side of the city).

If you’ve planted your garden, you’ll definitely want to cover the plants up to help protect them from the cold tonight. More of an issue may be damage to sprouting crops through the Red River Valley.

RDPS 2m Temperature Forecast valid 09Z Thursday May 27, 2021
An Arctic high will bring freezing temperatures to most of southern Manitoba on Wednesday night.

Temperatures will begin to recover on Thursday with a high near 15 °C with light easterly winds. The Arctic high will keep skies sunny as it slowly pushes off to the east. This will be a good thing, as it will likely mean a quick warm-up above freezing on Thursday morning. Temperatures will be warmer on Thursday night with a low near 2 °C.

Skies will stay sunny on Friday as warmer air continues to move into the region ahead of a low over the western Prairies. Winnipeg should see mainly sunny skies with southerly winds picking up into the 30–40 km/h range for the afternoon. Highs will reach around 18 °C through the Red River Valley, followed by lows in the upper single digits. The wind will stay breezy out of the south right through the night with some cloudier conditions building into the region.

Long Range Outlook

Forecasts show showers likely again on Saturday as a disturbance moves across the region. Sunnier skies should return on Sunday. Temperatures will be near-seasonal through the weekend with highs near 20 °C and lows near 10 °C. Warmer weather will return next week with highs climbing into the mid to upper 20s and lows in the low to mid-teens.

Today’s seasonal daytime high in Winnipeg is 22 °C while the seasonal overnight low is 7 °C.

Warm Holiday Monday Followed by Mid-Week Cool-Down

Winnipeg will see a beautiful holiday Monday followed by a quick reminder that colder weather lurks not so far away.

Winnipeg will see temperatures climb today as a push of warmer air moves through the region. It will start off this morning with some cloud and a chance of showers as an occluding trowal lifts through the region. Moderate south-southwest winds of 30–40 km/h will persist through the day as skies clear behind a weak cold front. The region will see markedly warmer temperatures than yesterday with a high near 25 °C. Winds will ease in the evening as temperatures head to a low near 14 °C under mainly clear skies.

RDPS 2m Temperature Forecast valid 21Z Monday May 24, 2021
Southern Manitoba will see a mild temperatures for the holiday Monday with highs in the mid-20s.

A low pressure system will push eastwards out of Saskatchewan across Manitoba on Tuesday. As it moves into the region, Winnipeg will see increasing cloud and southwest winds near 30 km/h. Temperatures will climb to a high near 19 °C by late in the morning. A cold front will sweep through the Red River Valley as the low passes in the afternoon. This will bring scattered showers into the region along with moderate northwest winds up to 40 gusting 60 km/h. The chance for showers will taper off into the evening, but the moderate northerly winds will continue for much of the night. A large Arctic ridge will push into the region behind the cold front, sending Winnipeg’s low close to the freezing mark by Wednesday morning.

That Arctic high will lay across the entirety of Manitoba on Wednesday, bringing a cool day to the region. Winnipeg will see a high only around 11 °C with northerly winds near 20 km/h. With that late-May sunshine, a sunny start to the day will likely see some afternoon cumulus clouds despite the cool temperatures. Skies will stay mainly clear on Wednesday night with light winds. Temperatures will likely dip below freezing in outlying areas, and drop close to freezing closer to the city centre.

RDPS 2m Temperature Forecast valid 12Z Thursday May 27, 2021
…and the mighty have fallen; much colder temperatures will arrive mid-week. Much of southern Manitoba will see a hard freeze or risk of frost Tuesday night and Wednesday night.

This Arctic high will bring a risk of frost to much of southern Manitoba on both Tuesday night and Wednesday night. Areas north of the Trans-Canada highway as well as southwestern Manitoba will likely see a hard freeze. For the Red River Valley, frost is more likely in rural areas than in the City of Winnipeg. While it’s less likely to freeze in the city centre, open and outlying areas of the city will see a higher risk of frost both nights. Temperatures are not forecast to drop much below zero in the Red River Valley, and will recover quickly above freezing both Wednesday and Thursday morning.

Long Range Outlook

Temperatures will recover through the rest of the week back towards seasonal values with partly cloudy skies. A weak low passing on Saturday will bring more cloud and a chance of showers to the region. After that, it looks like a nice stretch of seasonal temperatures with variable cloudiness will start off the next week.

Today’s seasonal daytime high in Winnipeg is 21 °C while the seasonal overnight low is 7 °C.

Cool Weather Continues in Winnipeg

Seasonably cool conditions will continue for a couple more days in Winnipeg as Arctic air spills southwards.

A strong northerly flow aloft will continue over the Prairies for another couple more days. Supported by a strong upper ridge over British Columbia and a stalled vortex over Hudson Bay. This will push an Arctic high southwards through the Prairies over the next 48 hours and bring well below-seasonal temperatures.

In Winnipeg, the city will see a sunny start to the day, then temperatures will climb to a high near +3 °C with northerly winds picking up to around 30 km/h. A disturbance slumping southwards will bring cloud into the region this afternoon, bringing mostly cloudy conditions and a slight chance of flurries. The cloud cover will break up tonight with temperatures heading to a low near -6 °C with light northerly winds.

RDPS 2m Temperature Forecast valid 21Z Tuesday April 20, 2021
Cooler temperatures will linger over the eastern Prairies on Tuesday.

The city will see mixed skies on Tuesday as the Arctic high moves from the southern Prairies into the United States. It will be another cool day with a high near +2 °C and again there might be a few isolated flurries with the cloud cover. The northerly winds won’t be as strong as Monday as they pick up to around 20 km/h. The cloud cover will clear out overnight with a low near -5 °C with light winds.

With the Arctic well to the south for Wednesday, westerly winds will move back into the region. This will spread seasonal temperatures back into the Red River Valley with highs reaching 11 or 12 °C. Winnipeg should see plenty of sun with those westerly winds in the 20–30 km/h range. Skies will clear for Wednesday night with a low near +1 °C.

Long Range Outlook

Mild temperatures will move into the region on Thursday as an area of low pressure moves through the province. Highs will climb into the upper teens with breezy westerly winds. A cold front will sweep through the region on Thursday night, bringing cloud, a chance of showers or flurries, and below-seasonal temperatures back to the region for Friday. The sun should reappear for the weekend with temperatures gradually climbing back towards seasonal values.

Next week looks to be on the cloudier side as more unsettled conditions develop across the eastern Prairies.

Today’s seasonal daytime high in Winnipeg is 12 °C while the seasonal overnight low is 0 °C.