Showers Later Tuesday Bring Relief From the Heat

A cold front will bring showers and thunderstorms to Southern Manitoba today, easing the heat and humidity of the past few days.

RDPS 24-hour Precipitation Accumulation Forecast valid 12Z Wednesday August 24, 2022
Showers will spread from western Manitoba southwards through the day on Tuesday.

A low pressure system crossing Hudson Bay overnight has kicked off a push of cooler air southwards through Manitoba. While this push of cold air won’t be overly strong, it will be enough to break the heat of the past few days. Highs will dip into the low to mid-20s over the next few days with northerly winds of 20—30 km/h during the day. Today will start off with a mix of sun and cloud, then become increasingly cloudy into the afternoon. Widespread showers with a risk of thunderstorms will drop through the Red River Valley mid- to late-afternoon through the evening. In Winnipeg, there is the ever-present risk that the showers will dodge around the fringes of the city, but it looks likely that there will be some rain later in the afternoon or evening. Skies will clear out overnight with lows dipping close to 10 °C.

Wednesday through Friday will bring mainly sunny skies to the region. Daytime highs will gradually warm from the low 20s back into the mid- to upper-20s. Overnight lows will climb back into the upper teens by Friday night.

Long Range Outlook

A low pressure system will likely move through the region this weekend, bringing more cloud and showers to the region. Both Saturday and Sunday look unsettled, with a few lingering showers possible on Monday. Sunshine should return for next week.

Today’s seasonal daytime high in Winnipeg is 24 °C while the seasonal overnight low is 11 °C.

Seasonably Cool and Showery Weather Ahead

A northwesterly flow will bring seasonably cool and showery weather to southern Manitoba this week.

RDPS 300mb Wind and Height Forecast valid 18Z Wednesday July 27, 2022
An upper low will slump across Manitoba over the coming days, bringing cooler temperatures and unsettled conditions.

An upper low slumping from northern Manitoba towards Lake of the Woods will usher a northwest flow into Manitoba and bring seasonably cool temperatures to the region. Today will start off with showers ending early, followed by mixed skies with more showers likely later in the morning and into the afternoon. A few thunderstorms may even develop in the afternoon, but no organized severe weather threat will exist with them. Temperatures will climb into the low to mid-20s this afternoon with a northwest wind increasing to 30 gusting 50 km/h.

The showers will taper off in the evening with the loss of daytime heating. Partly cloudy skies will linger overnight with a low in the mid-teens.

On Wednesday, the upper low will drag a trough southwards over the Red River Valley, bringing more showers to the region. Temperatures will be even cooler with a high only around 20 °C. The region will see breezy northerly winds again through the day. The showers will taper off in the evening, but some cloud will continue to linger into the night. Temperatures will dip down into the low teens overnight.

The whole disturbance will begin to move off from the region on Thursday. Winnipeg should see mixed clouds with just a small chance of any more rain showers. Temperatures will climb back into the low 20s with light northerly winds. Skies should finally clear out by Thursday evening as a ridge of high pressure builds into the region. Temperatures will head to an overnight low in the low teens again on Thursday night.

Long Range Outlook

The heat returns for the weekend with highs climbing back to seasonal or seasonably warm values. There should be plenty of sunshine and little chance of rain. Overnight lows will also warm substantially, climbing back into the upper teens.

If the next few days of cooler, showery weather isn’t your cup of tea, don’t worry! The summer heat is right around the corner.

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

Showery Friday Night Leads to Seasonal Summer Weekend

A low pressure system moving through tonight will bring [thunder]showers to southern Manitoba, but leave behind pleasant summer conditions for the weekend.

Today will start off with beautiful conditions as temperatures climb into the upper 20s under mainly sunny skies. As the low approaches later in the day, cloud cover will start to build into the Red River Valley, particularly later today into the evening. The low will pass by to the south tonight, spreading showers across southern Manitoba. There may be enough instability to produce a few thundershowers, but no severe weather threat is expected. Temperatures will head to a low in the mid-teens with showers likely continuing into Saturday morning. By the time it all tapers off on Saturday, it’s likely that Winnipeg will receive at least 10 mm of rain with amounts high as 20–30 mm if some heavier showers end up developing as well.

The one exception to all this will be southwestern Manitoba, where strong to severe thunderstorms are possible later this afternoon into the evening. Be sure to stay aware of any watches or warnings issued by ECCC later today.

The cloud cover will begin to break up as the showers taper off on Saturday afternoon. Temperatures should still manage to climb into the low to mid-20s with a bit of a northerly breeze. A few clouds will linger through the region Saturday night with a low in the 10–15 °C range.

Sunday will bring mainly sunny skies to the region with a high in the low to mid-20s.

Long Range Outlook

Monday will start next week with pleasant conditions and seasonal temperatures. After that, though, the overall pattern looks to turn more unsettled. Beginning Monday night into Tuesday, the region will see mixed to cloudy skies with several chances for showers or thunderstorms that will last into later in the week before settling down again. The work week should end with pleasant conditions as sunnier skies and highs in the upper 20s return.

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

Pleasant Weekend With a Return to Seasonal Temperatures

There will be plenty of sunshine in Winnipeg over the coming days as temperatures gradually ease back to seasonal values.

RDPS 2m Temperature Forecast valid 21Z July 1, 2022
Canada Day will bring seasonably cool temperatures and a northwesterly wind to Winnipeg this year.

A low pressure system over Hudson Bay will keep a persistent west-northwest flow over the province for the next couple days. This pattern has brought a slow-moving high pressure system to the Prairies; it will keep the clouds (mostly) away and temperatures seasonably cool.

Temperatures in the city today will climb to a high in the low 20s this afternoon. A northwest wind will pick up into the 20–30 km/h range later this morning. In the afternoon a few clouds will pop up, but it should stay dry through the afternoon. The clouds will dissipate this evening as the wind dies off. Temperatures will head to a low near 10 °C.

A few clouds will move through the region on Saturday as temperatures climb to a high in the low 20s again. Winds will be light as the area of high pressure moves across the province. A weak low crossing Saskatchewan will begin pushing a warm front towards the region by evening. This will bring some cloud cover into the region overnight as temperatures drop to the low teens.

Sunday will be an unsettled day across the region as enough warmth and moisture returns to produce broad instability. A combination of the passing low and stalled frontal boundary will provide support for showers and/or thunderstorms, likely possible at several points throughout the day. Temperatures should reach the mid-20s in the afternoon the afternoon. At this point, severe weather is unlikely, but a few strong thunderstorms may develop.

Conditions should settle on Sunday night with temperatures heading into the low teens.

Long Range Outlook

Forecasts show temperatures staying at seasonal to above-seasonal values through the week with gradually increasing humidity. By the end of the week, daytime highs could reach close to 30 °C. Conditions will be pleasant for the first couple days, but an unsettled pattern could develop mid-week, bringing occasional periods of stormier weather.

All in all, a pretty typical and pleasant summer weather forecast!

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