Parts of southern Manitoba were drenched after a series of thunderstorms overnight — and there's more to come.

Jill Verwey, president of Keystone Agricultural Producers, says farmers in Portage la Prairie needed the rain, but could use a bit more.

"Some of the later stage crops could benefit from more rain," she told host Marjorie Dowhos during a Tuesday interview with CBC's Radio Noon.

The storms rolled into Manitoba overnight, ushered in by a warm front from Saskatchewan. The rain developed near Riding Mountain and slid southeastward through the night hours, through Winnipeg and Steinbach and beyond, according to Environment Canada.

Areas between the south end of Lake Manitoba and Winnipeg saw 20-40 millimetres. The hardest hit area was Zhoda, south of Steinbach, with 60.7 mm.

Verwey says the word "variable" can best describe this year's Manitoba farming season due to the unpredictable rainfall.

"I think that dry, hot spell that we had in June definitely had some big, negative impacts on the start of the season for the majority of farmers."

CBC Meteorologist John Sauder says a few evening showers and a risk of thunderstorms can be expected in Manitoba on Tuesday, before it becomes partly cloudy overnight.

There's another chance of showers and storms late Wednesday, but the weather will become slightly cooler with lower humidity levels after that, according to Sauder. Thursday also carries a chance of late evening showers.

The impact of Tuesday's rainfall on Winnipeg was scattered, from 5-10 mm in the northeast to 24 mm downtown, according to Environment Canada.