Winnipeg will continue to see a mix of weather this week with near-seasonal temperatures.

Today will be a pleasant late-summer day in Winnipeg with westerly winds picking up to 30 km/h and bringing sunshine back to the area. Temperatures should climb close to the 20 °C mark this afternoon. More cloud will move into the region this evening as a cold front sweeps through. Some more showers are likely tonight as northwest winds usher cooler air into the region, but the most organized precipitation will fall along the western escarpment of the Red River Valley and in the lee of the lakes. In these areas, anywhere from a couple millimetres to potentially over 10 mm is possible. In Winnipeg and much of the Red River Valley itself, though, just a few light showers are likely through the night with little accumulation.

Any remaining showers should taper off on Wednesday morning as a high pressure system pushes into the region. The clouds may linger into the afternoon as brisk northwest winds up into the 30 to 40 km/h range continue. Temperatures will be cooler on Wednesday with highs only in the mid-teens. The winds will ease off on Wednesday night as skies clear and temperatures head to an overnight low as cold as +1 or +2 °C.

The high pressure system will bring mainly sunny skies to the region on Thursday. Winds will be light and highs will again sit in the mid-teens. The high will begin shifting off to the east later in the day. As it exits the area, southerly winds will begin to pick up as more cloud moves into the 

Long Range Outlook

Another disturbance moving into the region on Friday will bring cloud and a good chance of rain. Accumulations across the region may vary significantly; Winnipeg could see 2 to 4 mm with increasing amounts southwards. Some cloud and showers may persist into Saturday as temperatures finally warm back to seasonal values. The sun should make a full return on Sunday.

Today’s seasonal daytime high in Winnipeg is 17 °C while the seasonal overnight low is 5 °C.

The rain across southern Manitoba will taper off today as very strong northwesterly winds develop across southern Manitoba. Once they ease later today, a stretch of slightly cooler, but mainly dry, conditions takes over.

A low pressure system tracking northwards out of Minnesota is the culprit for this latest batch of wet weather across the region. It will continue along the Manitoba/Ontario border today with wrap-around showers lingering through the region into the afternoon. Very strong northwest winds will develop across most of southern Manitoba this morning; sustained winds of 50–60 km/h will spread eastwards this morning, and gusts could reach as high as 80–90 km/h.

The winds will begin to ease later in the day as the low continues off into northern Manitoba. The combination of cloud cover, showers, and that northerly wind will result in a very cool day. Temperatures in Winnipeg will only reach around 10 °C this afternoon. Some clearing will develop tonight as the winds continue to ease to around 20 km/h. Temperatures will fall into the 5–10 °C range.

The weather forecast will be fairly stagnant through the rest of the week. This low moving through will stall out over northern Manitoba for a few days, keeping the weather relatively consistent across the province. Here in Winnipeg, daytime highs will generally sit in the 15–20 °C range with lows in the 5–10 °C range. Northwest winds of 20–30 km/h will be common during the days, but will slowly ease as the system in northern Manitoba weakens through the week. Morning sun with some afternoon cloud will be commonplace.

The only catch might be Thursday; there’s a chance that the Red River Valley is clipped by the remnants of this system as it exits the province. If that happens, Winnipeg would see cloudier conditions on Thursday with a chance of a few showers. It would also be cooler in that situation with highs in the 10–15 °C range.

Long Range Outlook

The end of the week and weekend is looking pleasant overall. Temperatures will nudge back towards 20 °C for the weekend with plenty of sunshine Friday through Sunday.

Today’s seasonal daytime high in Winnipeg is 22 °C while the seasonal overnight low is 8 °C.