The Oshawa forecast calls for a cloudy Wednesday with a 30 per cent chance of morning showers and a high of 17 C.
Environment and Climate Change Canada’s 5 a.m. forecast says northwest winds will reach 20 km/h. The UV index is expected to reach 3, or moderate.
At 9 a.m., conditions observed at Oshawa Executive Airport were mostly cloudy with a temperature of 13.6 C. Humidity was 82 per cent, visibility was 16 kilometres and winds were from the west at 15 km/h.
Cloud cover is expected to remain through Wednesday night, with an overnight low of 4 C.
Thursday is forecast to be cloudy with an east wind of 20 km/h becoming light late in the morning. The expected high is 13 C, followed by periods of rain Thursday night and a low of 8 C.
Showers are forecast for Friday with a high of 13 C. Cloudy periods, a 40 per cent chance of showers and windy conditions are expected Friday night as temperatures fall to around zero.
Conditions are then expected to improve for the weekend. Saturday’s forecast calls for sunshine and a high of 9 C, followed by clear skies and a low near zero. Sunday is also expected to be sunny, with a high of 13 C.
Normal temperatures for Oshawa at this time of year are a high of 13 C and a low of 4 C. Wednesday’s sunrise was at 7:28 a.m., with sunset expected at 6:34 p.m.
Forecasts can change, particularly around passing showers. Residents planning outdoor activities or travel should check the latest official conditions before leaving.
Source
Environment and Climate Change Canada: Oshawa seven-day forecast, issued at 5 a.m. EDT on October 14, 2026.
