Sarnia
Lambton County, Ontario, Canada
Current Weather
8°46°
Mostly Clear
Feels Like: 5°41°
Min: 7°44°
Max: 14°58°
The next few hours will be overcast, with today reaching 14°C and dropping to 3°C. The coming days will be drizzle
Hourly Forecast
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Air Quality
Air quality is acceptable. However, there may be a risk for some people.
Daylight Hours
08:04
Sunrise
18:21
Sunset
Moon
18:25
Moonrise
08:37
Moonset
Daily Forecast
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View stargazing scoreWeather in Sarnia today, October 26, 2026
Cloud cover dominates in Sarnia on October 26, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Expect a grey start, with morning cloud around 100% by 05:00. Outdoor plans early on should not rely on bright skies.Cloud cover dominates in Sarnia on October 26, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Expect a grey start, with morning cloud around 100% by 05:00. Outdoor plans early on should not rely on bright skies.
Expect highs of 14°C and cooler readings close to 7°C. Relative humidity sits between 58% and 97%, reaching its peak around 04:00. A lighter breeze peaks around 23:00 near 22 km/h.Expect highs of 58°F and cooler readings close to 44°F. Relative humidity sits between 58% and 97%, reaching its peak around 04:00. A lighter breeze peaks around 23:00 near 13 mph.
Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 14.9 km on average, though it can drop toward 12.9 km in thicker cloud or showers. Expect sunrise at 08:04, sunset at 18:21, and 10 hours 16 minutes of sunlight today overall.Expect persistent cloud later on, with amounts around 100% by 12:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 9.3 mi on average, though it can drop toward 8 mi in thicker cloud or showers. Expect sunrise at 08:04, sunset at 18:21, and 10 hours 16 minutes of sunlight today overall.
The practical takeaway for Sarnia on October 26, 2026 is a cloudy day that stays usable, just not particularly bright, around 14°C.The practical takeaway for Sarnia on October 26, 2026 is a cloudy day that stays usable, just not particularly bright, around 58°F.
Frequently asked questions about weather in Sarnia
How warm does it get in Sarnia?
The warmest month in Sarnia is July, with average high temperatures of 27°C. The average temperature during this period is around 23°C.The warmest month in Sarnia is July, with average high temperatures of 80°F. The average temperature during this period is around 73°F.
How cold does it get in Sarnia?
The coldest month in Sarnia is January, with average low temperatures of -5°C. The average temperature during this period is around -3°C.The coldest month in Sarnia is January, with average low temperatures of 22°F. The average temperature during this period is around 27°F.
What is the wettest time of year in Sarnia?
The wettest month in Sarnia is July, with an average of 91 mm of precipitation.The wettest month in Sarnia is July, with an average of 3.6 in of precipitation.
What is the driest time of year in Sarnia?
The driest month in Sarnia is November, with an average of 57 mm of precipitation.The driest month in Sarnia is November, with an average of 2.3 in of precipitation.