Category: Forecasts

Rainy Friday, Pleasant Weekend

Brad Leave a comment

Rain will be the story of the day for Winnipeg as a stalling low pressure system continues to produce rainfall over portions of Southern Manitoba. The wet weather will give way to a fairly pleasant weekend, however, as a westerly flow develops and spreads warmer air eastwards across the Prairies.

Winnipeg can expect another 5-10 mm of rain today as a slow-moving low pressure system continues to produce a band of rain stretching from the Pilot Mound region northeastwards through the Red River Valley, over the south basin of Lake Winnipeg and off through the Nopiming Provincial Park into Ontario. With the wet weather, temperatures will be near-seasonal as the daytime high sits near 17°C. The wind will be gusty out of the north at around 30 km/h gusting to 50 km/h.

Forecast rainfall amounts from the RDPS for Friday between 7AM and 7PM local time.
Forecast rainfall amounts from the RDPS for Friday between 7AM and 7PM local time.

The rain will taper off this evening as the low moves off into Ontario. Clouds will then scattered out as the wind gradually tapers off and the temperature dips to a low near 7°C.

Saturday will be a fairly nice day with a high near 20°C under sunny skies. Expect a low near 11°C on Saturday night under clear skies.

Sunday will be a warmer day with temperatures climbing into the mid-20’s as warmer air spreads eastwards across the Prairies. Cloud cover will increase through the day, though, as a cool front sweeps through the Red River Valley in the afternoon. At this point, no rain is expected. Winds will shift from 20-30 km/h out of the south to 20-30 km/h out of the northwest behind the front. Skies will gradually clear overnight as temperatures head to a low near 13°C.

Long Range

Next week is looking relatively unsettled with multiple chances for rain through the week. Temperatures will be near seasonal for much of the week, although it appears that a more pronounced cool-down may come with some rain at the end of next week.

Winnipeg’s seasonal daytime high is currently 18°C while the seasonal overnight low is 6°C.

Warmer Weather Returns Alongside Chance of Rain

Brad Leave a comment

With the ridge of high pressure that brought the decidedly fall-like temperatures now moving off to the southeast, temperatures will begin to warm and head back towards seasonal. Although today will bring plenty of sun to the region, a low pressure system is heading our way from Idaho and will bring cloud and a renewed chance for rain for Thursday night and Friday.

A beautiful sunny day, hopefully unimpeded by a rogue cloud bank that should remain in North Dakota, will be in place through Winnipeg & the Red River Valley today. Our very cool start to the day will be quickly forgotten as temperatures climb to around the 20°C mark this afternoon with a southerly wind near 20 km/h. Tonight will be milder than last night with a low near 10°C.

Thursday will bring increasing cloudiness to the region ahead of an incoming low pressure system. A southerly wind once again near 20 km/h will continue to draw mild air northwards and help temperatures climb to a high near 22°C. By evening, an area of rain will likely push into the region from the southwest, with the wet weather continuing overnight as temperatures fall to a low near 14°C.

The GDPS is forecasting a swath of 20-30mm of rain through Winnipeg on Thursday night and Friday, however some other models suggest much less rain and the main swath pushed a bit further southeast.
The GDPS is forecasting a swath of 20-30mm of rain through Winnipeg on Thursday night and Friday, however some other models suggest much less rain and the main swath pushed a bit further southeast.

Friday will be mainly cloudy with a continued chance of rain through Winnipeg and the Red River Valley eastwards to the Ontario border. Winds will shift out of the north as the low pressure system moves into Ontario which will combine with the extensive cloud cover to keep our daytime high to just 16 or 17°C. As skies clear on Friday night, temperatures will dip to a cool low near 7°C.

Long Range

The weekend is looking quite pleasant with dry weather, plenty of sunshine and daytime highs returning to the low- to mid-20’s.

Winnipeg’s seasonal daytime high is currently 18°C while the seasonal overnight low is 6°C.

Cooler Weather to Start the Week

Scott Leave a comment

Cooler weather is on tap earlier this week as a series of cold front usher in a much cooler air mass. While temperatures will remain only slightly below seasonal averages, some areas will stand a risk of frost.

A cold front will bring cooler weather to southern Manitoba today
A cold front will bring cooler weather to southern Manitoba today

This Week

Today will be cool and breezy as a series of cold front brings cooler weather to southern Manitoba. The first cold front passed through late Sunday, with a secondary cold front coming through later today. The initial cold front dropped temperatures into the teens for today, and was followed by fairly extensive cloud cover. The second cold front will bring a chance of showers to most of southern Manitoba today as it passes through and picks up any residual moisture. Parts of western Manitoba that clear out tonight may experience light frost as temperatures drop rapidly after sunset. Winds will be gusty out of the north-west at 30 km/h gusting to 50 km/h.

Following today’s frontal passage, we’ll experience one of the coolest days in awhile on Tuesday. High temperatures will only be in the mid teens. Some cloud cover is expected to develop during the day, but no precipitation is expected, save for perhaps an isolated light shower. There will be a risk of frost again Tuesday night, but it should be more isolated and mainly in traditionally frost-prone low-lying areas. Most parts of southern Manitoba should remain just above freezing due to a weak southerly flow overnight. Daytime winds will be westerly at 20 km/h.

Temperatures will begin to warm on Wednesday as we see a southwesterly flow begin to develop over southern Manitoba. Highs should climb up toward the 20°C mark under mainly sunny skies.

Long Range

The long range forecast suggests that summer weather may not be quite over yet! Weather models hints at more days with temperatures in the mid or perhaps upper twenties before September is over.

Unsettled Friday Leads Into Pleasant Weekend

Brad Leave a comment

Winnipeg & the Red River Valley will see one more day of unsettled weather before warmer, drier weather moves in for the weekend.

Wet weather is on the way this morning as a low pressure system passes through the Red River Valley, bringing showers with the risk of a thunderstorm across the region. All the rain should move out by midday with just a very slight chance of isolated showers through the afternoon as the cloud breaks up a bit. Temperatures will climb to a high near 18°C with a gusty northwesterly wind increasing to 20-30 km/h in the afternoon. Clouds will scatter tonight as we head to a low near 9°C. There will, however, be some lake effect showers streaming off the lee of the lakes, so depending on the exact wind direction, areas to the south-southeast to east-southeast of both Lake Winnipeg and Lake Manitoba may see some additional cloud and shower activity into Saturday morning.

A swath of showers is expected across Southern Manitoba this morning.
A swath of showers is expected across Southern Manitoba this morning.

Saturday will be a pleasant day with light winds and partly cloudy skies.1 Temperatures will rebound to around 20°C for a high. Clouds will begin moving in on Saturday evening for a mostly cloudy night with low temperatures dipping to around 12°C.

Sunday will bring mixed skies to Winnipeg & the Red River Valley with gusty southerly winds developing ahead of an incoming low pressure system. Temperatures will be warm, with highs climbing to around 24 or 25°C. Sunday night will continue fairly cloudy with a chance of showers. Temperatures will dip to around 11°C.

Long Range

The start of next week looks quite cool as a cold front pushes through on Monday bringing distinctly fall-like weather as cool Arctic air pushes into the region. Daytime highs in the mid-teens look quite possible for the first couple days next week before temperatures rebound back towards seasonal mid-week.

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

  1. Save for any remaining lake-effect cloud/showers first thing in the morning. ↩