Rain Ends and Summer Returns

Rain will taper off today in Winnipeg and after one cool night, summer heat will begin pushing back into the region.

Winnipeg managed to miss out on the heaviest rainfall expected with this system. Rather than stalling near the city, the rain—and associated deformation zone—ended up continuing to rotate northwest of the city. As the low responsible for the unsettled conditions exits the province, that band of rain will push eastwards and move back across the Red River Valley this morning. Winnipeg will see a few more showers as it moves through that taper off midday. Moderate northwesterly winds near 30 gusting 50 km/h will develop this morning and last until the evening. The cloud cover should begin to break up through the afternoon with clearing arriving late in the afternoon or early evening.

A ridge of high pressure moving through tonight will bring cool conditions with temperatures heading to a low near +4°C.

Fortunes change on Saturday as a warm front pushes eastwards through the province. Some morning cloud will give way to mixed skies for the afternoon with a southerly wind of 20 to 30 km/h developing. Some forecast models suggest a chance of showers midday as the warm front passes, but it doesn’t look particularly likely. Temperatures will climb to seasonably mild high near 21°C. Skies will stay partly cloudy on Saturday night with light southerly winds and a low near 11°C.

Milder temperatures near 20°C will return to southern Manitoba on Saturday.
Milder temperatures near 20°C will return to southern Manitoba on Saturday.

Warm air will continue to stream northwards on Sunday, bringing summer heat back into the region. Winnipeg will see partly cloudy skies as temperatures head to a high near 25°C. Humidity will begin to work back into the region late in the day, helping keep overnight lows warmer near 15°C.

Long Range Outlook

Next week will kick off with even more heat and humidity as Winnipeg’s daytime highs climb into the upper 20s. Multiple days of southerly winds will bring humidity back into the region, producing humidex values in the low 30s and overnight lows in the upper teens.

Today’s seasonal daytime high in Winnipeg is 21°C while the seasonal overnight low is 7°C.

More Wet Weather On The Way, But A Second Summer Approaches

Winnipeg will see more rain in the second half of the week, but all signs point towards a return to summer temperatures by the end of the weekend!

Tucked between two lows, Winnipeg will see a brief reprieve from wet weather today. Although there may be the odd break of sunshine, skies should stay mostly cloudy. Winds out of the northeast at 20 to 30 km/h will keep the daytime high to a seasonably cool 16°C. The winds will persist tonight as temperatures head to a low near 9°C.

A large low pressure system moving towards Lake of the Woods on Thursday will spread more rain into southern Manitoba. Rain should spread northwards into Winnipeg through the morning, then persist through the afternoon into Thursday night. Winds will strengthen to 30 gusting 50 km/h out of the northeast in the morning. The wind and wet weather will keep things cool; Winnipeg should see a high near 12°C.

The wind will shift to the north-northwest on Thursday night with a low near 9°C.

While much of southern Manitoba will likely see at least 20 to 30 mm of rain through the end of the week, some forecast models suggest that the region could see a widespread 25 to 50 mm.
While much of southern Manitoba will likely see at least 20 to 30 mm of rain through the end of the week, some forecast models suggest that the region could see a widespread 25 to 50 mm.

Showers will taper off through the day on Friday with breezy northwest winds near 30 gusting 50 km/h. Winnipeg will likely see at least 20 to 30 mm by the time the rain tapers off, but there’s potential for amounts in the 30 to 40 mm range.1

Temperatures will be marginally warmer with a high near 14°C. Skies should finally clear out on Friday evening as a ridge of high pressure moves into the region. The winds will taper off quickly on Friday evening then Winnipeg will head to a low temperature near 5°C.

Long Range Outlook

After a cool and wet week, conditions will change significantly this weekend as a large upper level ridge builds over central and eastern North America. Temperatures are forecast to climb into the mid-20s by the end of the weekend, then into the mid- to upper-20s to start next week. A deep southerly flow will advect Gulf moisture northwards, and the region could see humid conditions return to start next week with overnight lows climbing back into the upper teens.

The upper ridge is forecast to shift eastwards mid-week, allowing a large upper trough to push into the region, likely bringing unsettled conditions mid-week and a return to more seasonal conditions by the end of the week.

Today’s seasonal daytime high in Winnipeg is 19°C while the seasonal overnight low is 7°C.

  1. Final amounts will depend on exactly where embedded convective bands of rain develop in this system.

Cloudy, Cool and Unsettled Week Ahead for Winnipeg

A series of slow-moving low pressure systems will move through southern Manitoba this week, bringing cloudy, cool and unsettled conditions to the region.

The first disturbance this week will move into the Dakotas today, spreading cloud cover and rain northwards. Winnipeg may see a bit of sun this morning, but skies will cloud over relatively quickly today. Rain will begin spreading north through the Red River Valley in the afternoon, reaching Winnipeg by the evening. Temperatures won’t be too bad with a high near 17°C, but that will likely be earlier in the day before the clouds thicken up. Winds will be noticeable today, though, picking up out of the east into the 30 gusting 50 km/h range.

The rain will persist through the night as winds gradually turn northeast and weaken. Rainfall amounts may be variable, generally in the 10 to 20 mm range. If a few embedded lines of convection develop, then localized amounts could increase into the 20 to 30 mm range. The only potential trouble spot in the forecast is the chance of a slight break in the rain developing over the Red River Valley between hang-back rain over southwest Manitoba and the low-supported rain spreading northeast. If this happens, a swath of the region will see little rain, but we’ll just have to watch as things evolve through the afternoon. Temperatures will dip to a low near 12°C.

Some forecast models suggest rainfall totals of 20 to 30 mm from midday today to midday Tuesady, but widespread totals will likely be lower than that.
Some forecast models suggest rainfall totals of 20 to 30 mm from midday today to midday Tuesady, but widespread totals will likely be lower than that.

The rain will ease early Tuesday morning, but chances for a few patches of light rain or drizzle will persist. Skies will stay cloudy with northerly winds of 15 to 20 km/h persisting through the day; with a high of just 14°C it will certainly feel fall-like out there. The chance for precipitation will taper off for the night, leaving Winnipeg with cloudy skies and a low near 9°C.

Wednesday will bring more cloud to the region with winds picking up out of the east to around 20 km/h. Temperatures will climb to a high near 16°C and despite the cloud it should stay dry through the day. The chance of rain will increase on Wednesday night as the next disturbance begins lifting towards the region from Wyoming. Temperatures will dip to a low near 11°C on Wednesday night.

Long Range Outlook

Thursday will bring more rain to Southern Manitoba as more energetic system pushes towards the region. As a result, there may be a few embedded thunderstorms move through. The region may see more rain with this system as well, possibly in the 20 to 40 mm range. There’s a good chance that some light showers will persist into Friday, then sunshine and near-seasonal temperatures return for the weekend.

Today’s seasonal daytime high in Winnipeg is 20°C while the seasonal overnight low is 7°C.

Rainy Monday Night Followed By Gradual Improvement

More rain is on the way for Winnipeg tonight, then the sun returns mid-week for several pleasant days.

A low pressure system pushing eastwards across the Prairies will bring more rain to Winnipeg later today. After a sunny start to the day, clouds will push back into the region this afternoon. Temperatures should reach a high near 19°C, but southeasterly winds of 20 to 30 km/h will make it feel cooler than that. Showers will spread into the region for the evening hours and persist for much of the night. There may even be a chance for a few embedded thunderstorms through the evening hours.1 The showers will gradually taper off overnight behind the low. The wind will ease in the evening, then pick up out of the northwest to around 30 km/h late overnight. Temperatures will dip to a low near 11°C.

A broad swath of rain and showers will spread across southern Manitoba on Monday.
A broad swath of rain and showers will spread across southern Manitoba on Monday.

Tuesday will start off with cloudy skies and a chance of some lake-effect showers drifting southeastwards of both Lake Manitoba and Lake Winnipeg. Skies will stay mostly cloudy for much of the day, but a few sunny breaks may develop late in the afternoon. The cloud cover and northwest winds will keep things cool; Winnipeg will see a high only near 15°C. The winds will ease in the evening with clearing skies; Winnipeg should see a low near 6 or 7°C.

On Wednesday, a southerly return flow combined with sunshine will help temperatures recover back to seasonal values. The city will see a high near 22°C with southwest winds around 15 km/h. The next disturbance crossing the Prairies will push more cloud back into the region through the afternoon. Skies should clear back out overnight with a light south wind continuing. Temperatures will dip to a low near 11°C.

Long Range Outlook

The remainder of the work week is looking nice with highs in the low 20s or upper teens and variable cloudiness. Cooler temperatures will return for the weekend, but the region should still see a fair amount of sunshine. Unsettled conditions are forecast to return to start off next week.

Today’s seasonal daytime high in Winnipeg is 21°C while the seasonal overnight low is 9°C.

  1. No severe weather is expected.