Niagara Falls' weather forecast for May 7: Sunny start with thunderstorms ahead
Oshawa's weather forecast for May 7: Bright start with evening showers
Nearly a month's worth of rain washes over parts of the Prairies this week
Thunderstorm risk creeps into southern Ontario, risk of large hail, winds
Heavy rain soaks parts of the Prairies, risk of 100 mm by Wednesday