Oshawa weather forecast conditions include a chance of showers on Sunday, September 13, with a daytime high of 26 C.
Environment Canada forecast possible showers during the morning and a 40 per cent chance of precipitation through the day. Residents heading outdoors should be prepared for changing conditions even though periods without rain are possible.
Showers remain in the forecast for Sunday night, when the temperature is expected to fall to 12 C. The probability of overnight precipitation is also 40 per cent.
Sunday conditions in Oshawa
The forecast points to a mild late-summer day followed by a much cooler night. A 14-degree difference between the expected daytime high and overnight low may be noticeable for evening activities.
Sunset is at approximately 7:30 p.m. Residents should keep rain protection nearby and check radar before leaving.
A 40 per cent precipitation probability means showers are possible within the forecast area; it does not indicate continuous rain. Conditions can vary across Oshawa and neighbouring communities.
Check updates before travelling
Forecasts can change as observations become available. Motorists should account for potentially wet roads, especially after dark.
Environment Canada provides current conditions, hourly forecasts and alerts for Oshawa.




















