Cool Start to the New Work Week

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Winnipeg will see seasonably cool temperatures to start the new work week, but warmer weather will quickly return.

Breezy northwesterly winds on the backside of a low pressure system that crossed the province yesterday will bring cooler conditions to Winnipeg today. The city will see a cloudier start to the day with a chance of a few showers. Skies will gradually clear through the morning with northwest winds increasing to 30 gusting 50 km/h. Once the sun is out this afternoon, temperatures will climb to a seasonably cool high of 21°C.

A ridge of high pressure will move into the province tonight, bringing light winds and a low near 7°C.

The same ridge of high pressure will bring beautiful weather to the city for Tuesday: plenty of sunshine, light winds, and a seasonal high near 25°C!

A few clouds will likely push into the region on Tuesday night as temperatures head to a low near 12°C.

Hotter conditions will redevelop over southern Manitoba on Wednesday ahead of a low pressure system moving through Saskatchewan. The city will see increasing southerly winds with temperatures climbing to a high near 28°C. Skies should stay partly cloudy through the day with most of this system’s cloud moving across northern Manitoba.

Heading into Wednesday night, the chance for thunderstorms will develop as the region shifts into a more unsettled pattern. Temperatures will stay warm with a low near 18°C. We’ll be able to give a better idea of the chances for thunderstorms in our mid-week forecast.

Long Range Outlook

The rest of the week should see warm weather with increasing humidity. The general pattern will become more unsettled, but it’s far too early to be able to nail down any specific timing for any showers or thunderstorms. In general, though, it appears that the region will head into a warmer stretch with variable cloudiness and the potential for unsettled conditions.

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

Seasonably Warm with Mixed Weather

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Winnipeg will see seasonably warm temperatures return on Friday, sandwiched between unsettled conditions on Friday and Sunday.

A passing upper-level low will bring mixed skies to Winnipeg today with breezy westerly winds near 30 gusting 50 km/h. The city will see a chance of showers through the day, although the best odds will be through the morning hours. With the “cooler” upper low over the region, daytime highs will return to seasonal values near 25°C. There might be the risk of an odd lightning strike in the afternoon, but no organized thunderstorm threat exists.

The wind will ease this evening as temperatures head to a low near 16°C under partly cloudy skies.

On Saturday, a ridge of high pressure will move across the region. It will bring sunny skies with temperatures climbing back towards the 30°C mark. Winds won’t be an issue, keeping light out of the west through the day. Temperatures will stay warm on Saturday night with a low near 19°C under increasing cloudiness.

Winnipeg will see a chance of showers or thunderstorms midday Sunday as a trough of low pressure moves through. Timing will be crucial to where that threat develops; if convection holds off until the afternoon, there’s a better chance that the activity will develop east of the Red River into the southeastern corner of the province. We recommend you keep an eye on ECCC’s thunderstorm outlook product in our bulletin viewer Saturday afternoon and Sunday for the latest updates on the thunderstorm and severe weather potential. The chance for showers may redevelop later in the day when a cold front swings through the region.

Aside from the convection, it will be a fairly pleasant day. Temperatures will climb to a high near 29°C with comfortable humidity and southerly winds of 30 gusting 50 km/h shifting to westerly 30 gusting 50 km/h behind the trough.

Long Range Outlook

Settled conditions will move into southern Manitoba to start next week with below-seasonal temperatures moving in on Monday behind the cold front. More heat will return mid-week with variable cloudiness and perhaps the occasional chance of thunderstorms.

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

Hot and (Briefly) Muggy Conditions Return

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Winnipeg will see more heat with building humidity before a cold front passes through on Thursday, bringing a chance of showers or thunderstorms.

An upper ridge over the province will bring another hot day to Winnipeg. The city will see daytime highs near 30°C under mainly sunny skies today. Dew points will gradually rise through the day as southerly winds of 20 to 30 km/h draw humidity northwards. This will produce humidex values approaching the mid-30s this afternoon. The wind will persist out of the south tonight near 20 km/h with increasing cloud. This will result in a warm, muggy night with a low near 21°C.

There’s a lot of diversity in the model forecast solutions for Wednesday night. Some models have no precipitation for Winnipeg, while others sustain an area of thunderstorms from southern Saskatchewan into the region. Either way, if there is going to be any precipitation it likely won’t arrive in Winnipeg until early Thursday morning. The synoptic pattern isn’t particularly favourable for sustaining nocturnal convection, but if the thunderstorms in Saskatchewan can organize early enough, they may be able to last all the way to the Red River Valley. We’ll keep an eye on it, and we’d also recommend checking out Environment & Climate Change Canada’s take on it in their thunderstorm outlook, available in our bulletin viewer.

On Thursday, a cold front will push across the province early in the day. Behind the front, moderate westerly winds of 30 to 40 gusting 50 km/h will clear skies and usher in a drier air mass. Temperatures will still be warm with a high near 29°C, but the drier conditions will make it more comfortable. Winds will continue out of the southwest at 10 to 20 km/h on Thursday night. Temperatures will head to a low near 17°C with increasing cloud.

Friday will bring breezy conditions to southern Manitoba again as a low pressure system passes to the north. Westerly winds will pick back up into the 20 to 30 km/h range in the Red River Valley with mixed to cloudy skies. There will be a chance of showers with this system as well as moisture wraps around the low. Potential rainfall amounts amounts don’t look particularly significant; just light accumulations of a couple mm look possible. Temperatures will be cooler with a high near 25 or 26°C.

Skies will clear Friday night with diminishing winds. Winnipeg will see a low near 16°C.

Long Range Outlook

Warm weather will return to the region on Saturday with highs returning to the 30°C mark with mostly sunny skies. Showers or thunderstorms will be possible on Sunday with a low pressure system forecast to move across southern Manitoba.

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

Heat Builds In Through The Week

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Sweltering summer heat will slowly build into Winnipeg this week as an upper ridge builds moves into the region.

The only significant weather feature for southern Manitoba over the next few days will be a potent upper-level ridge building into the region. As it approaches, daytime highs will slowly climb to around 30°C with overnight lows moving from the mid-teens to around 20°C.

Conditions will remain dry over the next few days with sunny to partly cloudy skies in place right through Wednesday. Overnight Wednesday into Thursday morning there may end up being a chance of showers or thunderstorms as a low pressure system begins moving eastwards across southern Saskatchewan.

Humidity levels should remain comfortable through the first half of the week.

Long Range Outlook

The heat continues into the second half of the week, but Thursday in particularly looks sweltering. As the low pressure system passes by to the north, dew points are expected to climb to around 20°C. Assuming that the region ends up seeing enough sunshine, this would produce humidex values in the upper 30s. The humidity will ease heading into the weekend, but temperatures should remain warm with highs in the upper 20s or low 30s.

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