A quick moving low pressure system will cross southern Manitoba Wednesday bringing an area of rain into the Red River valley by mid to late afternoon into the evening. The bulk of the rain is expected between 4 pm and midnight in Winnipeg and the RRV with general amounts of 5-10 mm expected. Amounts up to 15 mm are possible in some areas where embedded convection will generate locally heavier showers at times. Rain will move out of southern Manitoba overnight Wednesday with clearing skies expected Thursday as a ridge of high pressure builds in from the west. That ridge will cross southern Manitoba Friday bringing sunny skies and seasonable temperatures in the mid teens.
The outlook for Thanksgiving weekend looks fantastic with well above normal temperatures expected. As the ridge moves east of Manitoba, a southwest flow of unseasonably warm air will spread across all of the Prairies Saturday and Sunday, sending temperatures soaring into the 20s along with plenty of sunshine. Temperatures in Winnipeg could be approaching record highs by Sunday (current record high for Sunday Oct 11th is 26.1C on Oct 11 1942) A cold front is forecast to push through southern MB Sunday evening with a chance of showers, followed by somewhat cooler conditions for holiday Monday (but still above normal with highs of 16-18C) All in all, looks like a great holiday weekend to enjoy fall weather at its finest!