Summer Heat Going Nowhere

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Winnipeg will see slightly cooler temperatures today, but the sweltering heat will build right back into the region.

Temperatures will be a few degrees cooler in Winnipeg today behind a cold front that moved through overnight. Rather than the highs in the low 30s seen over the past few days, the city will “only” reach around 28°C. One notable difference will be that the humidity will ease into the mid-teens making things a little bit more comfortable. The city will see a bit of lingering cloud this morning with a chance of a shower or two, then skies will clear in the afternoon. It won’t be too windy, either, with southerlies near 20 km/h.

Unfortunately, there won’t be much relief for in the overnight lows. Warmer air will already be building back into the region tonight as the upper ridge begins rebounding into the region. The city will see a low near 17°C.

RDPS 2m Temperature Forecast valid 18Z Thursday July 2, 2020
Hot, increasingly humid weather will return to the region on Thursday.

Thursday and Friday will bring plenty of sunshine to the region with temperatures climbing back into the low 30s. The humidity will surge back as well, sending humidex values back into the upper 30s. The wind will be more prominent on Thursday out of the south at 30 gusting 50 km/h, but Friday should bring calmer conditions with light southerlies.

For both nights, lows will head back into the 20 to 23°C range. The risk of thunderstorms – with severe weather possible given the hot and humid air mass – will return on Friday night for much of southern Manitoba.

Long Range Outlook

The upper ridge will begin to collapse on the weekend, replaced by a west-southwest flow aloft. This will continue to keep temperatures warm, but it’s likely the region will end up seeing a bit more cloud with occasional chances for showers or thunderstorms. Conditions will settle next week with generally sunny conditions.

No notable break in the heat is in the forecast. The humidity levels are forecast to ease slightly for next week, but the city will continue to see daytime highs in the 28 to 31°C range and overnight lows of 18 to 20°C.

Today’s seasonal daytime high in Winnipeg is 25°C while the seasonal overnight low is 13°C.

Sweltering Summer Heat Continues

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Hot, humid weather continues in Winnipeg this week with a chance of thunderstorms on Wednesday.

The upper ridge that has brought a hot and humid air mass to the province isn’t going anywhere any time soon. As a result, neither will the heat. Temperatures over the next couple days will continue to climb into the low 30s during the day and dip to the low 20s at night. Along with this heat, dew points in the low 20s will produce humid conditions with humidex values climbing towards 40.

Winnipeg will see a bit of cloud over the next couple days with winds out of the southeast at 20 to 30 km/h.

RDPS 2m Temperature Forecast valid 21Z Tuesday June 30, 2020
Hot, humid conditions will continue over southern Manitoba on Tuesday.

On Wednesday, a “cold” front will push across the region, bringing more cloud and some showers with the risk of a thunderstorm. Given the hot and humid air mass in place, there will likely be a risk for severe thunderstorms in the region. What exactly it will look like, though, will depend significantly on the evolution of the system over the next two days as it brings more rounds of severe thunderstorms to southeastern Saskatchewan and southwest Manitoba.

Long Range Outlook

Temperatures will cool slightly behind the cool front on Wednesday, but the heat quickly returns for Friday into the weekend. Highs will climb back into the low 30s with humidity returning to the region. It appears that a reprieve from the heat (or at least the humidity) is likely after the weekend.

Stay safe and enjoy the summer weather as best you can!

Today’s seasonal daytime high in Winnipeg is 25°C while the seasonal overnight low is 13°C.

Sunny Skies Ahead as Heat Wave Builds In

Brad

Winnipeg will see plenty of sunshine (and wind) through the weekend as an extended period of hot weather builds into the region.

The main driving force for the weather over the coming days will be a digging west coast trough. As it deepens over the Rockies, an upper ridge will build in response downstream over Manitoba and Ontario. As a result, a deep southerly flow will develop, pumping hot air northwards out of the United States.

Today will make the beginning of the event as an upper low slumps southwards through British Columbia. Here in Manitoba, we’ll see sunny skies in the wake of the system that brought showers and thunderstorms to the region last night. Highs will climb into the upper 20s with a northwest wind of 20 to 30 km/h.

RDPS 2m Temperature Forecast valid 21Z Saturday June 27, 2020
Hot summer temperatures will build into the region this weekend, marking the start of an extended period of seasonably hot conditions.

The more notable heat will build in for the weekend. As the upper ridge continues to build, a deep southerly flow will send high temperatures to the low 30s for the weekend. Winds of 30 to 40 km/h will develop during the days, easing into the 20 to 30 km/h range at night. Those breezy overnight winds will keep overnight lows warm near 20°C.

Winnipeg and the Red River Valley will see plenty of sunshine over the next several days.

Long Range Outlook

The heat will persist right through much of next week with highs in the upper 20s or low 30s. Compounding it, though, will be the arrival of more significant humidity on Monday. Dew points will climb close to 20°C, which will not only make the heat feel worse, but also keep overnight lows hot despite weakening winds.

Unsettled conditions may Arrive for Tuesday through Thursday with the chance for widespread shower or thunderstorm activity in the Red River Valley. The heat looks to moderate ever so slightly for next weekend.

Stay safe and be sure you know about the health risks and danger signs of heat: summer is here!

Today’s seasonal daytime high in Winnipeg is 25°C while the seasonal overnight low is 12°C.

Warm Weather Returns; Thunderstorms Possible Thursday

Brad

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.