Fox News Weather Center

Heavy Rain to Soak Great Falls to Winnipeg

A swath of steady, soaking rain will slowly shift from the northern Plains to the Canadian Prairies this weekend, making people reach for their umbrellas.

Raincoats and pants may be the preferred choice over shorts and t-shirts for people in Billings, Montana, Regina, Saskatchewan and Winnipeg, Manitoba, as the rain and thick cloud cover is accompanied by temperatures well below normal.

Highs will run as much as 20 degrees below normal in areas impacted by the rain, making it feel more like October rather than August. Some locations in southern Saskatchewan may even fail to climb out of the 40s on Sunday.

What will start off as showers on Friday will evolve into a deluge of rain by the weekend, continuing through Sunday.

This rain may have negative impacts on events across the region this weekend, including the Great Saskatchewan Mustard Festival set to be held in Regina on Sunday.

Rumbles of thunder may also be embedded in the rain closer to North Dakota, but no severe thunderstorms are expected to develop this far north.

Flooding should be anticipated across the zone where the heaviest rain is expected to fall.

With over 2 inches of rain forecast to fall over such a large area, rivers will rise and likely remain above normal for the days following the rain.

Areas closest to creeks and rivers should prepare now in the case that river flooding does occur.

Looking ahead to the upcoming week, the heavy rain is projected to shift to the north and east, but the cooler weather will remain.

A few showers may still linger around the area in the wake of the rain; however, the showers will not be long lasting with most of Monday and Tuesday being dry.