Ottawa - weather

april 4, 2026

Ottawa

Heavy rain this weekend. What: Rainfall amounts of 20 to 40 mm. The ground may have little ability to absorb further moisture due to recent rainfall events. When: This afternoon into Sunday morning. Additional Information: A Colorado low will bring rain to the area, beginning with periods of rain this afternoon. The heaviest rain is expected tonight, with locally higher amounts possible in thunderstorms. ### Water will likely pool on roads and in low-lying areas. Visibility will likely be suddenly reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or post reports on X using #QCStorm. 10:01 To 02:01