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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
According to the live forecast above, tomorrow in Orillia you can expect a mix of sun and cloud with a high near the seasonal average and a low dropping below freezing. Lake effect flurries may develop in the evening as northwesterly winds pick up off Lake Couchiching.
What will the wind and precipitation be like?
Winds from the northwest at around 15 to 25 km/h will make it feel a few degrees cooler through the afternoon. The live forecast above shows only a slight chance of flurries during the day, with the risk increasing after sunset. Any snow accumulation should be minimal, under 2 cm, but untreated surfaces may become slippery overnight.
How does Lake Couchiching shape Orillia’s weather?
Orillia sits near the narrows between Lake Couchiching and Lake Simcoe, so a northwest flow often brings lake-effect clouds and flurries. Tomorrow’s setup is typical for early winter, with cooler air moving over relatively open water. For a longer outlook, check the weather in Orillia 10 days or the orillia weather 30 day forecast on our site.
Is there any weather warning for Orillia tomorrow?
No weather warnings are currently in effect for Orillia, according to the live forecast above. However, be alert for possible lake-effect squalls overnight. You can monitor changes on our Weather Warning page.
What time will the sun rise and set tomorrow in Orillia?
Sunrise in Orillia tomorrow is around 7:50 a.m. and sunset near 5:00 p.m., giving about nine hours of daylight. The shorter days and low sun angle mean UV levels remain low, as noted by Health Canada.
Will tomorrow be colder than today in Orillia?
Tomorrow’s daytime high should be similar to today’s, but the overnight low will be a few degrees colder. With northwest winds, wind chill values may fall to near -15°C by early Tuesday morning. For hourly details see the weather in Orillia tomorrow hourly data.
Sources
For a complete picture of conditions across the province, visit our Canada weather hub. Residents tracking orillia matters can also check the Toronto Weather page for regional trends affecting the Lake Simcoe area. Whether you rely on the orillia weather network or want the weather in Orillia today, our forecasts keep you prepared.