The week will start cool and cloudy for Winnipeg, but sunshine and seasonal temperatures will return mid-week.
Much cooler weather will be in place across southern Manitoba to start the week as an Arctic high slowly builds southwards. Temperatures will struggle to reach just 16°C in Winnipeg today, made worse by a northerly wind near 30 km/h. Skies will remain mostly cloudy today; just as quickly as last night’s low pressure system exits the region, the next one is on its way. The cloud cover will thicken back up this afternoon as a low pressure system moves into the eastern Dakotas.
By evening, the Red River Valley will likely see some light rain move in that will gradually work eastwards overnight. Amounts will be a bit tricky given that copious amount of dry air spreading southwards from the Arctic high will produce an abrupt edge to the rainfall. At this point, it looks like amounts will be negligible over the Red River Valley. Winnipeg will likely remain north of the rain, but the southern Red River Valley could see “as much as” 2-4 mm. Temperatures will dip down into the 8-10°C range tonight.
Tuesday will bring sunshine back to the region as begin to clear out for the afternoon. Temperatures will once again be cool with a high near 18°C, but light winds will make for a more pleasant day than Monday. A bit of cloud might work back into the region in the evening, bringing a slight chance of a showers as a weak upper trough swings into the region. On Tuesday night, Winnipeg should see partly cloudy skies with the upper trough continuing to give a chance of showers. Temperatures should dip to a low near 8°C.
Seasonal temperatures will return on Wednesday as the Arctic ridge exits and warmer air moves in from the west. Under partly cloudy skies, Winnipeg should see temperatures climb to a high near 24°C. Winds will pick up out of the south to around 20 km/h. Temperatures will be much warmer Wednesday night with a low near 13°C, aided by southerly winds of 20-30 km/h.
Long Range Outlook
The remainder of the week looks fairly nice with seasonal to above-seasonal temperatures and variable cloud cover. The next chance for rain looks to be Friday night as a weak cold front pushes across the province.
Winnipeg’s seasonal daytime high is currently 23°C while the seasonal overnight low is 10°C.
