Cloudier Conditions on Tuesday, Then Warming Up

Unsettled conditions moving through the region on Tuesday will bring a return of seasonal temperatures to Winnipeg.

Winnipeg will see beautiful conditions for much of the day today with sunshine and light winds. Temperatures will climb to a high near 25°C this afternoon with cloudier conditions moving in for the evening. The region will see a chance of showers through the night into Tuesday morning. Winnipeg will only see a chance of showers through this period, though, with much of the activity passing to the south. Temperatures will head to a low near 15°C tonight.

Tuesday will another day of light winds as a weak low pressure system drifts away to the southeast. After some cloud and chance of showers in the morning, skies should gradually clear in the afternoon. Temperatures will be a bit cooler with a high near 22°C. The city will see partly cloudy skies on Tuesday night with a low near 12°C.

24hr. Accumulated Precipitation Forecast valid 00Z Wednesday July 22, 2020
Showers will move across southern Manitoba on Monday night into Tuesday. Most forecasts show almost all the activity passing to the south of Winnipeg.

Wednesday will see temperatures return to seasonal values in Winnipeg with a high near 25°C. Skies will be partly cloudy with a light southerly wind developing for the afternoon. Cloudier conditions will develop overnight ahead of the next disturbance moving into the area. By early Thursday morning, the Red River Valley may see some thunderstorms rolling through.

Long Range Outlook

Warmer weather will move in for the second half of the week with highs climbing up towards 30°C. Humidity will also move back into the region; forecasts show dew point values increasing back towards 20°C. With the heat and humidity will also come the potential for more thunderstorms. The weekend looks to continue to be warm with gradually easing humidity.

Today’s seasonal daytime high in Winnipeg is 26°C while the seasonal overnight low is 13°C.

Warm Weather Returns; Thunderstorms Possible Thursday

Winnipeg will see warm summer temperatures return with a good chance of thunderstorms on Thursday evening.

Before any unsettled weather arrives in Winnipeg, the city will get to enjoy a beautiful summer day. Under sunny skies, temperatures will climb to around 27°C with light winds. Thunderstorms moving into southwestern Manitoba overnight will spread some cloud into the Red River Valley as temperatures head to a low near 11°C.

The city will see mixed skies on Thursday as a low pressure system moves into the Red River Valley. There’s a slight chance of an early morning shower or thunderstorm as nocturnal convection weakens heading into the Red River Valley. Through the rest of the day, skies will likely err on the cloudier side. A southerly wind will develop to around 25 km/h as temperatures climb to a high near 28°C.

RDPS 2m Dew Point Forecast valid 00Z Friday June 26, 2020
Increasingly humid conditions will build into the province on Thursday.

Notably, the humidity will build on Thursday with dew points climbing into the upper teens. This moisture will help support a severe weather threat on Thursday evening as a low moves through. Moderate amounts of instability supported by favourable wind shear will support the development of scattered thunderstorms over western Manitoba in the afternoon. This activity will shift into the Red River Valley through the evening, quickly exiting with a slight chance of a few lingering showers overnight. Strong to severe thunderstorms are possible with primary threats of damaging hail and wind gusts.

Temperatures will dip to a low near 17°C on Thursday night with diminishing winds.

A few lingering showers are possible Friday morning, then Winnipeg will see mixed skies with some clearing later in the day. Temperatures will stay warm with a high near 27°C, but humidity levels will return to more comfortable levels. Winds will pick up out of the northwest into the 20 to 30 km/h range for the day, then ease in the evening. The city will see a low near 14°C on Friday night under clear skies.

Long Range Outlook

Through the weekend, a digging west-coast upper trough will build an upper ridge over Manitoba. As a result, hot weather will develop this weekend with highs climbing back over 30°C alongside gradually increasing humidity. Skies should stay on the sunnier side through the weekend.

Heading into next week, it’s looking as though temperatures will stay hot and humid! Unsettled conditions and several chances for showers or thunderstorms.

Today’s seasonal daytime high in Winnipeg is 24°C while the seasonal overnight low is 12°C.

Cool Weather for the Weekend

A slow moving upper low over Manitoba will keep temperatures in Winnipeg cool with mixed to cloudy skies through the weekend.

Temperatures will stay seasonably cool right through the weekend for Winnipeg as a cold upper low slowly meanders across the province. Highs will hover around 20°C over the next few days with lows near 10°C. The city will also see a fair amount of cloud cover with mixed to cloudy skies.

Today will be the windiest day of the next few with southwest winds of 20 to 30 km/h in the afternoon. Saturday will bring light southerly winds, then they switch northerly for Sunday up to 30 km/h again.

GDPS 24hr. QPF valid 12Z Sunday June 21, 2020
A disturbance tracking through North Dakota will bring rain to southeastern Manitoba on Saturday.

Saturday will bring the only notable organized weather event over the next few days. A low pressure system moving through North Dakota will spread an area of rain across the southeastern Manitoba. The rain will develop midday and taper off through the evening and overnight periods. Regions under the main band of rain will see about 5 to 10 mm. Winnipeg will sit along the northwestern edge of the rain and could see a few hours of showers or, if it develops just a bit to the southeast, nothing but some clouds.

Some scattered showers are possible on Sunday, but will most likely occur over the Parkland and Interlake.

Long Range Outlook

Temperatures should return to seasonal values by the middle of next week with a bit more sunshine. For the second half of the week, Winnipeg should start seeing highs in the mid- to upper 20s again with comfortable humidity. No notable rain or severe weather threats appear in the forecasts through next week.

Today’s seasonal daytime high in Winnipeg is 24°C while the seasonal overnight low is 11°C.

Cooling Off But Remaining Unsettled

Winnipeg will see another hot and humid day capped off with a risk of thunderstorms before cooler temperatures move in.

Temperatures will again climb into the low 30s today in Winnipeg as southerly winds continue to pump heat northwards. The city has seen a bit of a break from the humidity overnight, but it will build back in through the day with dew points rising to around 20°C. A disturbance lifting northwards into the region this morning will bring a chance of showers later this morning into the afternoon. By late afteroon, activity will intensify with thunderstorms developing along a cold front pushing eastwards across the province.

Much of the Red River Valley and areas east will see a risk of severe thunderstorms this evening, but the greatest threat will be over southeastern Manitoba. The main threats in the Red River Valley will be large hail and damaging wind gusts. The thunderstorms should move eastwards out of the Red River Valley through the evening. Brisk southerly winds of 30 to 40 km/h today will ease in the evening.

For more details on the severe thunderstorm threat over southern Manitoba, refer to ECCC’s Thunderstorm Outlook on our Bulletin Viewer and watch for updated forecasts and/or any alerts issued today.

NAM 2m Dew Point Forecast valid 00Z Thursday June 18, 2020
A hot and humid air mass will provide fuel for a thunderstorm outbreak over southern Manitoba later today.

Much cooler conditions will arrive for Thursday with mixed skies and a good chance of showers. Temperatures will work towards a high of 22°C with west-northwest winds picking up to around 30 km/h. The region will see a good chance of showers as an upper low stalls over southern Manitoba. Any showers will taper off in the evening as temperatures head to a low near 9°C under partly cloudy skies.

The sluggish upper low will still impact the region on Friday with partly cloudy skies and a chance of showers. The high will be seasonably cool near 21°C with southwest winds of 20 to 30 km/h. Winnipeg should see a few clouds on Friday night with a low near 11°C.

Long Range Outlook

Cool and unsettled conditions will likely persist into the weekend with highs in the low 20s and a couple more chances for showers. Seasonal conditions will return next week with more settled conditions developing.

Today’s seasonal daytime high in Winnipeg is 24°C while the seasonal overnight low is 11°C.