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Home News Weather

Oshawa Forecast Calls for Sun, Clouds and High of 19 C

All About Durham Editorial Team by All About Durham Editorial Team
September 19, 2026
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Original sun-and-cloud illustration for the Oshawa forecast on September 19
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The Oshawa weather forecast calls for a mix of sun and cloud on Saturday, September 19, with a daytime high of 19 C.

Environment and Climate Change Canada’s 5 a.m. forecast says skies should clear late in the afternoon. An east wind is expected to reach 20 km/h near noon, with gusts up to 40 km/h.

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High UV index despite mixed skies

The UV index is forecast to reach 6, which is rated high. People spending time outdoors should consider sun protection even when clouds are present.

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At 9 a.m., the federal station at Oshawa Executive Airport reported current conditions for the city. Residents elsewhere in Durham may see small local differences in temperature, wind and cloud cover.

Saturday evening should begin clear before becoming partly cloudy overnight. There is a 40 per cent chance of showers during the night, with a low of 12 C.

Sunday may start with showers

Sunday is expected to be mainly cloudy with a 40 per cent chance of showers in the morning, followed by clearing later in the morning. Northeast winds could reach 20 km/h and gust to 40 km/h near noon.

The Sunday high is forecast at 20 C, with another high UV index of 6. Sunday night should clear and fall to 9 C. Monday is currently forecast cloudy with a high of 18 C.

Forecasts can change as new observations arrive, so anyone planning weather-sensitive activities should check the latest federal update.

Sources

  • Environment Canada Oshawa forecast
  • DurhamRegion.com forecast listing

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Tags: Durham regionEnvironment CanadaOshawaWeather
All About Durham Editorial Team

All About Durham Editorial Team

The All About Durham Editorial Team covers local news, events, public safety, weather and community updates across Durham Region, Ontario.

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