Sweltering Summer Heat Ahead

Winnipeg will see sweltering temperatures this weekend with temperatures set to climb above 30°C for several consecutive days.

A building upper ridge will send temperatures in Winnipeg soaring today. Under mainly sunny skies, the city will see a daytime high near 32°C. A weak ridge of high pressure should keep winds light and the humidity at comfortable levels. Light southerly winds will pick up tonight with a warm low near 20°C.

On Saturday, southerly winds near 20 to 30 km/h will bring a muggier air mass into the region. Temperatures will continue to be hot with a high near 33°C. The morning will be sunny, but partly cloudy skies will likely develop in the afternoon as a weak trough moves through. Temperatures will cool to a low near 19°C on Saturday night with mostly clear skies.

A cold front will push through the region early Sunday morning, bringing with it a chance of showers or thunderstorms. A breezy northwest wind up to 30 gusting 50 km/h will develop through the day, ushering in a slightly drier air mass. Behind the front, skies will clear as temperatures climb to a high near 30°C. Winnipeg will see a low near 15°C on Sunday night under mainly clear skies.

Long Range Outlook

Next week will bring a return of more seasonal temperatures with daytime highs in the mid-20s. Winnipeg will see partly cloudy conditions through the first half of the week with no significant storm threats through the first few days of the week.

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

Summer Heat Continues To Build

Temperatures in Winnipeg will continue heat up as the city enters into a stretch of hot summer weather.

Winnipeg will see partly cloudy skies through the day today as some remnant cloud from overnight thunderstorms in Saskatchewan graze the area on their way by. There will still be plenty of sun, though, and temperatures will climb to a high near 28°C. Breezy southerly winds picking up to 30 gusting 50 km/h will draw a more humid air mass northwards, making this feel a bit muggy this afternoon.

Heading into the evening, the city will see a slight risk of thunderstorms. Unfortunately, the setup is highly conditional. Whether or not thunderstorms will move eastwards out of southwestern Manitoba into the RRV won’t be clear until much later today. For a comprehensive look at why the setup is so tricky, be sure to check out the ECCC Thunderstorm Outlook on our bulletin viewer.1 As the system responsible for the thunderstorm threat pushes east overnight, skies will clear. The wind will ease tonight with temperatures dipping to a low near 18°C.

Thursday will bring mainly sunny skies to the city as a broad ridge of high pressure moves through. The humidity will ease a bit as temperatures head to a high near 30°C. Winds won’t be much of an issue either, light out of the north or northeast. All in all a beautiful summer day! Temperatures will dip to a low near 17°C on Thursday night under partly cloudy skies. There is a small chance of showers or thunderstorms on Thursday night, but if they form they will likely stay well to the south of the city near the U.S. border.

Temperatures will continue to inch warmer on Friday with a high near 31°C. The city will see a bit more cloud through the day thanks to a stalled frontal boundary draped through the region. Winds will once again be light. Skies should gradually clear on Friday night as the warm front slowly pushes off to the northeast. As it does so, however, it may end up producing a few showers or thunderstorms on its way out of the region. Temperatures will dip to a low near 20°C on Friday night.

Long Range Outlook

The weekend looks hot with humid weather returning, highs in the low 30s, and lows near 20°C. The region will see plenty of sun, but once again there’s a small chance of thunderstorms on Saturday night.

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

  1. An updated Day 1 Thunderstorm Outlook should be available at the latest by 7:30 AM.

Hot and (Briefly) Muggy Conditions Return

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.

RDPS 2m Temperature Forecast valid 21Z Monday July 15, 2019

Summer Heat And Occasional Showers Ahead

Winnipeg may see a few showers or thunderstorms today and Wednesday, but the summer heat and relatively humid conditions continue.

The warm and humid weather continues this morning, but relief is on the way. Winnipeg may see a thunderstorm to start the day, but it’s dependent on where the overnight activity decides to move. Most guidance suggests the line will remain north of the city, but there’s a small chance that some new thunderstorms will develop along the southern end of the line. After that passes this morning, the region will see a mainly sunny morning with mixed skies in the afternoon. Temperatures will climb back up to 29 or 30°C with humid conditions continuing. A weak cold front will sweep through late in the day, bringing another chance of showers or thunderstorms to the city.

Winds will gradually turn northwesterly and strengthen to around 30 km/h through the day today, then ease in the evening. Winnipeg will see partly cloudy skies tonight as temperatures drop to around 17°C.

Tuesday will bring increasing cloudiness in the afternoon as the next low pressure system approaches. While still noticeable, the humidity will be a bit lower and comfortable as climb to a high near 26°C. Skies will remain mostly cloudy on Tuesday night with a small chance of showers. Temperatures will dip to a low near 17°C again.

While still humid, Tuesday will bring some relief from the humidity in place over the region on Sunday and Monday.
While still humid, Tuesday will bring some relief from the humidity in place over the region on Sunday and Monday.

Unsettled weather returns on Wednesday as a low pressure system crosses the province. The showers or thunderstorms are likely, particularly heading into the afternoon. Early indications are that much of the Red River Valley will see 5 to 15 mm, but the convective nature of the rain will mean some places see more, and some less, than that. All the cloud cover will mean cooler temperatures with a high near 23°C in Winnipeg. The rain should taper off by evening leaving partly cloudy skies overnight.

Long Range Outlook

Thursday will likely bring mixed skies and another small chance of thunderstorms, then a big pattern change moves in. While temperatures won’t cool down too much, a much drier air mass is forecast to move into the region. The weekend should bring highs in the mid- to upper 20s and plenty of sunshine!

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