Cool Weather Ahead with More Showers

Winnipeg will continue to see seasonably cool conditions this week with another round of showers arriving tonight.

A disturbance moving eastwards across Saskatchewan will bring increasing cloudiness to southern Manitoba today. Temperatures will stay seasonably cool in Winnipeg with a high near 13°C. Winds will stay out of the southeast at 15 to 25 km/h through the day, then ease this evening. Showers will spread across southwestern Manitoba today, then into the Red River Valley this evening. The showers will persist through the night as the temperature dips to a low near 5°C.

The showers will come to an end on Tuesday as temperatures rebound to around 12°C. By the time it tapers off, areas along the western escarpment and closer to the American border will receive 5 to 10 mm of rain, while other areas along the Trans-Canada Highway corridor see only 2 to 5 mm. Winds will be light out of the north through the day.

On Tuesday night, the cloud cover will begin to break up as temperatures head to a low near +2°C.

RDPS 48hr. Precipitation Accumulation valid 00Z Wednesday May 6, 2020
Forecast event-total rainfall amounts suggest totals of 5-10 mm across much of southern Manitoba. Due to the showery nature of the precipitation, amounts will likely be more variable than this map suggests within the area of precipitation accumulation.

Wednesday will see the return of the sun as cooler air once again slides into the region from the north. Winnipeg will see a high of only 10°C, much cooler than seasonal. Winds will be out of the north at 20 to 30 km/h. A ridge of high pressure will bring clear skies and calm winds on Wednesday night with lows dipping back below freezing.

Long Range Outlook

The long-range forecast looks dry but cool. Daytime highs of 8 to 12°C are forecast through the second half of the week and the weekend. A return towards seasonal conditions looks likely in the second half of next week.

Today’s seasonal daytime high in Winnipeg is 17°C while the seasonal overnight low is 3°C.

Showery Friday Brings Cooler Weekend

After showers move through on Friday, Winnipeg will see a seasonably cool weekend with more sunshine.

A low pressure system sliding across the province will bring cloudy and unsettled weather to Winnipeg today. Temperatures will be mild as southerly winds near 30 gusting 50 km/h send the high back up to around 20°C. The city will see a chance of showers through the day, but the most likely time will be as a cold front sweeps through later in the afternoon. An organized band of showers will sweep across the Red River Valley by the evening, bringing generally 2 to 5 mm of accumulation. There will be a slight chance of an embedded thunderstorm or two with this line, but there will be no organized threat of severe weather.

Winds will strengthen out of the northwest to 30 gusting 50 km/h tonight behind the cold front. By Saturday morning, temperatures will have dropped to a low near 6°C with some clearing pushing into the Red River Valley.

3km NAM Simulated Composite Reflectivity valid 00Z Saturday May 2, 2020
Model forecast simulated RADAR images reveal the band of showers that will sweep across the Red River Valley on Friday evening.

On Saturday, skies will continue to clear while the moderate northwesterly wind continues. Temperatures will be cooler with a high of 13°C. A ridge of high pressure moving in on Saturday night will send temperatures to a low near -1°C with northerly winds of 20 km/h.

The winds will gradually ease on Sunday as Winnipeg heads to a high near 9°C with light northeasterly winds. The city will see plenty of sunshine with just a few clouds around. On Sunday night, a bit of cloud will push towards the region ahead of the next low pressure system heading this way. Temperatures will dip to a low near +1°C.

Long Range Outlook

Some cloudier, unsettled, and warmer weather will return to start next week, then looks like Winnipeg will settle into a slightly cool pattern for the rest of the week with variable cloudiness. No major rain is in the forecast.

Today’s seasonal daytime high in Winnipeg is 16°C while the seasonal overnight low is 2°C.

Warming Temperatures Bring More Showers

Temperatures will continue to climb through the second half of the week in Winnipeg. After some mid-week sun, another round of showers is likely on Friday.

Winnipeg will see any left over cloud from yesterday’s system clear out this morning as a ridge moves across the province. The city will see a high near 17°C this afternoon. Temperatures will dip to a low near +4°C tonight with just a few clouds.

On Thursday, the next low pressure system will begin pushing east across the Prairies. Southerly winds will strengthen to 30 gusting 50 km/h through the day as warmer air spreads into the region. Winnipeg will see temperatures climb to around the 20°C mark under increasing cloud. Skies will stay cloudy on Thursday night with temperatures dipping to a low near 11°C.

NAM 24hr. QPF Forecast valid 12Z Saturday May 2, 2020
A low pressure system crossing Manitoba on Friday will bring showers to southern portions of the province and a broad swath of rain from western to northeastern regions.

On Friday, a shortwave will eject northeastwards out of Montana and lift across southern Manitoba. As it moves through, it will support an area of showers that will move across the Red River Valley along with plenty of cloud cover. Winnipeg will see temperatures reach a high near 17°C with southerly winds of 20 to 30 km/h. The winds will shift westerly and pick up a little bit in the evening as the low passes. Temperatures will dip to a low near 9°C.

Long Range Outlook

Temperatures will dip below seasonal values this weekend as cold upper low makes its way across the Prairies. Although seasonably cool, it should be dry with just a few clouds. Seasonal temperatures will build back into the province next week.

Today’s seasonal daytime high in Winnipeg is 15°C while the seasonal overnight low is 2°C.

Seasonal Spring Temperatures With a Few Showers

Spring weather continues in Winnipeg this week with seasonal temperatures and another round of showers or thunderstorms.

Today will be a beautiful day in Winnipeg as a weak ridge moves through. With west-northwest winds near 20 km/h and plenty of sun, temperatures will climb to a high near 16°C. An approaching low will begin to spread cloud into the region overnight with temperatures dipping to a low near 7°C.

Skies will be mostly cloudy in Winnipeg on Tuesday as a low pressure system slides across the southwestern corner of the province. Winnipeg will see a high near 15°C with light easterly winds. Showers will spread eastwards into the Red River Valley through the day. Amounts will be highest near the western escarpment where the easterly winds will help enhance precipitation. In these areas, 10 to 20 mm of rain is possible. Amounts will diminish eastwards across the Red River Valley. Embedded within this area of showers will be the potential for an embedded thunderstorm or two. The instability is weak with limited bulk shear, so if any occur they would be weak with no notable threat posed.

3km NAM Forecast 1km RADAR Reflectivity valid 18Z Tuesday April 28, 2020
Showers with the risk of isolated thunderstorms will push across the Red River Valley on Tuesday.

The showers will taper off through the evening, lingering along the western escarpment longer than elsewhere. Winds will pick up out of the north into the 20 to 30 km/h range for much of the night. Winnipeg will see temperatures dip to a low near +2°C.

Another weak ridge will move across the province on Wednesday, bringing clearing skies as temperatures climb back to a high near 16 or 17°C. Temperatures will dip back down to a low around +4°C on Wednesday night.

Long Range Outlook

Warm weather will return for the second half of the week with temperatures likely reaching 20°C on Thursday and Friday. Another disturbance moving through will bring a chance of showers on Friday. Seasonal to slightly below-seasonal temperatures will return fo the weekend with plenty of sunshine.

Today’s seasonal daytime high in Winnipeg is 15°C while the seasonal overnight low is 2°C.