Environment Canada has issued a special statement that a weather system is developing that is expected to deliver a heavy downpour that could, in some low lying areas, lead to flooding.
The worst of the weather will hit parts of southern Saskatchewan, beginning around Maple Creek.
"A developing low pressure system near the Cypress Hills will track eastward near the international border today," the weather office said Wednesday afternoon. "As the system moves east, it will ingest increasingly moist and unstable air resulting in significant rainfalls from the Cypress Hills eastward through portions of South-Central and Southeastern Saskatchewan."
Environment Canada said thunderstorms will accompany the system especially near the United States border.
"General rainfalls of 20 to 40 mm are likely within the [noted] regions, however there may be local amounts in excess of 50 mm, especially with thunderstorms," the statement said.
Many parts of Saskatchewan have been through a wet spring and early summer already and the additional moisture is not welcome.