More Rain Heading to the Red River Valley

Another low pressure system in the Dakotas will send waves of rain into Southern Manitoba this weekend.

RDPS 10m Wind and MSLP Forecast valid 18Z Saturday April 30, 2022
A potent low pressure system will move through South Dakota on Saturday.

The first wave of rain is developing over North Dakota today and will push across the border later this afternoon. This rain will continue north through the night, likely with some embedded thunderstorms as well. For many areas, the rain will be showery and transient; the most consistent rain will likely develop along a line that runs from the Pilot Mound region northeastwards across the southern Interlake. By Saturday morning, 25–50 mm is likely near the U.S. border with 15–25 mm further north near the Trans-Canada Highway.

Rain will continue on Saturday, fairly consistently along the SW-NE line from Pilot Mound Area through the Interlake. Southeast of this, a few showers are possible in the Red River Valley, followed by a more organized surge of rain midday through the afternoon. A few thunderstorms could again be seen with this area of rain.

The rain will turn more showery late Saturday and begin tapering off from west to east. A few showers will likely persist Saturday night over the Red River Valley and SE Manitoba.

RDPS 48 hr. Precipitation Accumulation Forecast valid 18Z Sunday May 1, 2022
Much of southern Manitoba will see notable rainfall accumulations from Friday night through Sunday.

Drier weather will gradually work into the region on Sunday. By the end of this system, many parts of south-central and eastern Manitoba will receive, in total, 25–50 mm of rain. The heaviest rain will likely occur from Pilot Mound eastwards into the Red River Valley with accumulations of 40–50 mm. Winnipeg will also see substantial rain with 25–40 mm likely. A secondary axis of heavier rain will also extend along that SW-NE line across the southern Interlake with generally 25–35 mm along it.

Long Range Outlook

Fortunately, this looks to be the end of the wet weather for a while. Long-term forecasts all agree: next week will be dry with a dramatic rise in temperatures. The sun should reappear for Tuesday, and daytime highs will climb closer to 20 °C by the end of the week!

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


Brad lives in Winnipeg with his wife and two children and is the founder of A Weather Moment. He has loved weather from a very young age and has followed that passion through his life so far. He received a B.Sc. in Earth Sciences with Specialization in Atmospheric Sciences and is currently employed in the field of meteorology. You can find the author as @WeatherInThePeg on Twitter.