It’s a tranquil start to the day in Greater Sudbury, with crisp temperatures and partly cloudy skies greeting residents this morning. A stretch of sunshine is expected today, offering a comfortable midsummer atmosphere before a more unsettled pattern arrives midweek. The possibility of showers and a thunderstorm looms on Wednesday, but Sudbury can look forward to a return to sunny skies by Thursday.
Today’s Weather Overview
Current Conditions
As observed at 7:00 AM EDT at Greater Sudbury Airport:
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Temperature: 14.3°C
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Condition: Partly Cloudy
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Wind: North-northeast at 11 km/h
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Pressure: 101.9 kPa and falling
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Humidity: 83%
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Dew Point: 11.4°C
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Visibility: Excellent, at 32 km
Sudbury residents can expect mainly sunny skies throughout the day, with a pleasant high of 24°C. The humidex will make it feel like 26°C, and the UV index of 8 means sun safety precautions are advised.
Tomorrow’s Forecast
Expected Conditions
Wednesday, July 9, 2025
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Daytime: Skies will turn mostly cloudy with a 60% chance of showers and a risk of an afternoon thunderstorm.
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High: 24°C
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Humidex: 27
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Wind: Becoming south 20 km/h in the afternoon
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UV Index: 7 (High)
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Night: Showers clear out, making way for clear skies overnight with a low of 14°C.
Thursday, July 10, 2025
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Daytime: Sunny skies and warm temperatures return.
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High: 26°C
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Night: Clear conditions continue with a low of 16°C.
Friday, July 11, 2025
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Daytime: Another sunny day, perfect for outdoor activities.
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High: 27°C
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Night: Staying clear and mild with a low of 17°C.
Wardrobe Recommendations
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Today: Light layers will suit the morning chill, with short sleeves or breathable fabrics recommended by the afternoon. Don’t forget sunglasses and sunscreen.
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Wednesday: Carry a light waterproof jacket or umbrella, and wear comfortable footwear in case of wet conditions.
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Thursday & Friday: Perfect weather for casual summer wear—think shorts, t-shirts, and UV protection.
Weather Trivia
Did you know?
Sudbury’s record high for July 8 stands at 34.4°C, set in 1983. That same summer, Sudbury recorded 12 consecutive days above 30°C—an extreme stretch for Northern Ontario and a testament to the variability of Canadian summers.
