Current Conditions

Sarnia, Ontario

76°F25°C
Cloudy

Wind

N 4 mph7 km/h

Humidity

63%

Cloud Cover

76%

As of Thursday, August 13, 2026 at 12:00 PM EDT

Today's Outlook

Day

Overcast and warm, with a high of 79°F26°C and morning low of 70°F21°C. Light wind from the NNE around 5 mph8 km/h.

Night

Mostly cloudy, with a low around 72°F22°C. Light wind from the ENE around 5 mph8 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
CloudyHigh 79°F26°CLow 70°F21°CPrecip 0 in0.1 mm4%Cloud 83%Wind NE 5 mph8 km/hThursday: Overcast and warm, with a high of 79°F26°C and morning low of 70°F21°C. Light wind from the NNE around 5 mph8 km/h. Thursday Night: Mostly cloudy, with a low around 72°F22°C. Light wind from the ENE around 5 mph8 km/h.
Partly CloudyHigh 79°F26°CLow 69°F21°CPrecip 0.01 in0.2 mm9%Cloud 77%Wind NE 6 mph10 km/hFriday: Overcast and warm, with a high of 79°F26°C and morning low of 70°F21°C. Breezy from the NE at 7 to 10 mph11 to 15 km/h. Friday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the NE at 6 to 8 mph9 to 14 km/h.
DrizzleHigh 80°F27°CLow 67°F19°CPrecip 0.04 in0.9 mm16%Cloud 58%Wind E 6 mph10 km/hSaturday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Light wind from the E around 6 mph9 km/h. Saturday Night: Mostly cloudy, with a low around 67°F19°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle in the evening.
Light RainHigh 81°F27°CFeels 86°F30°CLow 72°F22°CPrecip 0.25 in6.4 mm58%Cloud 80%Wind WSW 7 mph12 km/hSunday: Overcast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. 58% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the E at 7 to 9 mph12 to 14 km/h. 56% chance of light rain throughout the night.
ShowersHigh 73°F23°CLow 66°F19°CPrecip 0.07 in1.8 mm49%Cloud 59%Wind N 10 mph16 km/hMonday: Mostly cloudy and warm, with a high of 73°F23°C. Breezy from the N at 12 mph19 km/h. 28% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 66°F19°C. Breezy from the N at 8 to 11 mph13 to 17 km/h. 49% chance of showers overnight.
Partly CloudyHigh 80°F27°CLow 63°F17°CPrecip 0 in0 mmCloud 42%Wind SSW 5 mph8 km/hTuesday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 65°F18°C. Light wind from the SW around 4 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 63°F17°C. Breezy from the SSW at 6 to 9 mph10 to 15 km/h.
Light RainHigh 76°F24°CLow 70°F21°CPrecip 0.22 in5.6 mm47%Cloud 76%Wind SW 10 mph16 km/hWednesday: Overcast and warm, with a high of 76°F24°C and morning low of 70°F21°C. Breezy from the SW at 10 to 11 mph17 to 18 km/h. 47% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 45% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1379°F26°C70°F21°C0 in0.1 mm· 4%83%CloudyNE 5 mph8 km/h
FridayAug 1479°F26°C69°F21°C0.01 in0.2 mm· 9%77%Partly CloudyNE 6 mph10 km/h
SaturdayAug 1580°F27°C67°F19°C0.04 in0.9 mm· 16%58%DrizzleE 6 mph10 km/h
SundayAug 1681°F27°C
Feels 86°F30°C
72°F22°C0.25 in6.4 mm· 58%80%Light RainWSW 7 mph12 km/h
MondayAug 1773°F23°C66°F19°C0.07 in1.8 mm· 49%59%ShowersN 10 mph16 km/h
TuesdayAug 1880°F27°C63°F17°C0 in0 mm· —42%Partly CloudySSW 5 mph8 km/h
WednesdayAug 1976°F24°C70°F21°C0.22 in5.6 mm· 47%76%Light RainSW 10 mph16 km/h
ThursdayAug 2074°F23°C66°F19°C0.16 in4.1 mm· 30%52%ShowersNNW 9 mph15 km/h
FridayAug 2175°F24°C63°F17°C0.08 in2.1 mm· 17%50%DrizzleNW 8 mph12 km/h
SaturdayAug 2277°F25°C65°F18°C0.08 in2 mm· 16%43%DrizzleWNW 7 mph11 km/h
SundayAug 2377°F25°C65°F19°C0.07 in1.8 mm· 19%44%DrizzleNW 7 mph12 km/h
MondayAug 2478°F26°C66°F19°C0.04 in0.9 mm· 11%41%DrizzleWNW 8 mph12 km/h
TuesdayAug 2579°F26°C66°F19°C0.06 in1.5 mm· 10%40%DrizzleW 7 mph12 km/h
WednesdayAug 2677°F25°C66°F19°C0.07 in1.8 mm· 15%50%DrizzleNNW 8 mph14 km/h
ThursdayAug 2775°F24°C65°F19°C0.07 in1.8 mm· 15%50%DrizzleN 8 mph14 km/h

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About This Forecast

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Coordinates: 42.9787°N, 82.4041°W·Elevation: 185m·Timezone: America/Toronto·Population: 72,125