Winnipeg will see morning showers and widespread smoke today as a low pressure system passes by the region. Much more pleasant weather will return for the rest of the week and the start of school.

After the night’s heavier rain, a few showers or thunderstorms will drift northeastwards early this morning, clearing out of the Red River Valley as a low pressure system moves into Ontario. In its wake, widespread smoke will linger through much of southern Manitoba. This will give very poor air quality to the region and has resulted in a special air quality statement from the MSC. Winnipeg will likely see mainly cloudy skies today, though some late-day sun is possible. It will be a cool day, though, contrasting with the weekend heat as the daytime high only climbs to around 20 °C. Breezy northerly winds will abate this evening as skies clear. Temperatures will head down to a low near 10 °C.

Heading into the rest of the week, a steady and relatively stable pattern develops for the Winnipeg area. With a generally zonal flow aloft and disturbances tracking well to the north, conditions will trend fairly sunny throughout the Red River Valley. Smoke may be noticeable on a couple days through the rest of the week, but it’s unlikely to get anywhere near as bad as Tuesday’s conditions. And temperature-wise, there’s no complaints for the rest of the week with near-seasonal values expected. Highs will sit in the low 20s with lows dipping into the upper single digits.

Long Range Outlook

It currently looks like more of the same in the Red River Valley for the weekend and start of next week. Smoke will be the only wildcard in the long-range forecast, so we’ll keep our eyes peeled in case the potential for another bout of poor air quality arises.

After today’s smokey weather clears out, enjoy the beautiful late-summer weather!

Today’s seasonal daytime high in Winnipeg is 21 °C while the seasonal overnight low is 8 °C.

Winnipeg will see seasonal temperatures in the mid-20s this week, but several passing disturbances will bring chances of showers or thunderstorms to the region.

Today will be another cooler day in Winnipeg as easterly winds undercut moisture streaming over the province in the upper-level flow. The city will see easterly winds around the 20 km/h mark much of the day. Skies will likely be cloudy through the day, but a few sunny breaks are possible in the Red River Valley and southeast corner of the province. North of the city in the Interlake, showers are likely through much of the day, while further south the best chances will be early in the morning, then again in the late afternoon. A few thundershowers may be embedded within these showers.

The showers will taper off this evening as the winds diminish and temperatures head to a low in the mid-teens. Skies will stay mainly cloudy overnight as the next disturbance approaches the region.

On Wednesday will be another cloudy day in Winnipeg. Showers and/or thunderstorms will likely push into the southwest corner of the province early in the day, then gradually spread eastwards through the day. By mid-afternoon, the chance of showers or thunderstorms will begin to increase in the Red River Valley. This activity will slump southeastwards through the evening and exit the province overnight. Temperatures will head down to a low in the upper teens on Wednesday night.

On Thursday, a bit of sun will return to the region, but cloud will push back in later in the day as another disturbance pushes towards the region from Alberta. More showers or thunderstorms will develop near the Saskatchewan/Manitoba border late in the day and then gradually spread eastwards through the evening. This will bring a chance of thunderstorms or showers to Winnipeg overnight, with a slight chance of showers lingering into Friday morning. The city will see the overnight low dip down into the mid-teens.

Regarding daytime highs, much of the week will bring near-seasonal highs in the low to mid-20s.

Long Range Outlook

Heading into the weekend, an upper ridge will begin to re-establish itself over the Prairies, bringing more settled conditions. Sunnier weather looks likely for the weekend with daytime highs climbing towards the upper 20s.

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

An upper low crossing the Prairies this weekend will keep temperatures cool in southern Manitoba with some showers or thunderstorms likely in the days ahead.

A weak low pressure system will move across southern Manitoba today, the lingering feature from the system that brought 5 to 10 mm of rain to Winnipeg yesterday evening. As this low trundles into the Red River Valley this afternoon, it will support the development of scattered showers and thunderstorms. Severe weather is unlikely; energy will be limited with only 500 to 1000 J/kg of MLCAPE and bulk shear is also low at only around 15 to 20 knots. A marginally severe thunderstorm with large hail can’t be ruled out, but much of the area will mainly see the chance of showers and shorter-lived pulse thunderstorms.

Much of the activity will taper off in the evening, but a few showers may linger into the night, supported by both a shortwave sliding across the region and a weak trough extending from southern Manitoba northwestwards into central Saskatchewan.

On Saturday, the region will continue to see mixed skies with a slight chance of showers. Much less activity is expected than on Friday; there will be few, if any, features to support and organize showers. A bit of lingering instability may be left behind, but for the most part, mixed skies with just a slight chance of an isolated shower or two is most likely.

On Sunday, another low pressure system is poised to dive southeastwards through the province, bringing a good chance of rain to many parts of southern Manitoba. Some uncertainty remains on the track, but in general areas south of a line that runs roughly from Dauphin to the Whiteshell are likely to see accumulating rain at some point from early Sunday morning through the end of the day.

Temperatures over the next three days will be steady in the 20 to 25 °C while winds will generally be on the lighter side. Winds both today and tomorrow will mainly be westerly, while the passing low will shift the winds more northerly on Sunday.

Long-Range Outlook

It’s looking like unsettled conditions will continue into next week. Monday should bring a reprieve from any wet weather, but the chance of rain will return several times through the rest of the week. Winnipeg’s daytime highs and lows will sit at near-seasonal values through next week.

Today’s seasonal daytime high in Winnipeg is 26 °C while the seasonal overnight low is 12 °C.