Oshawa Monday weather includes a 30 per cent chance of showers late this morning and early this afternoon, with a daytime high of 15 C.
Environment Canada issued the October 26 forecast at 5 a.m. EDT. It calls for increasing cloudiness early in the morning and northwest wind reaching 20 km/h. The UV index is 3, or moderate.
Clearing skies overnight
Tonight’s forecast calls for clearing late in the evening and a low of zero. North wind at 20 km/h is expected to become light during the evening.
Tuesday is forecast to be sunny with a high of 10 C, followed by a clear night and a low of 1 C.
Morning conditions
At 9 a.m., Oshawa Executive Airport reported cloudy conditions and 9 C, with calm wind. That observation describes the airport at that time, not identical conditions across Durham Region.
The Oshawa Monday weather figures here use the federal location-specific forecast. Residents should check the live page for any later revisions.
Source
Environment Canada: Oshawa forecast and airport observation, October 26, 2026
Featured image: original conceptual illustration, not a photograph of today’s conditions.
