Current Conditions

Sarnia, Ontario

70°F21°C
Partly Cloudy

Wind

N 4 mph7 km/h

Humidity

87%

Cloud Cover

71%

As of Thursday, August 13, 2026 at 6:57 AM 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 68°F20°C. Light wind from the NE around 4 mph7 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 79°F26°CLow 68°F20°CPrecip 0 in0.1 mm3%Cloud 71%Wind NNE 5 mph7 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 68°F20°C. Light wind from the NE around 4 mph7 km/h.
Partly CloudyHigh 79°F26°CLow 68°F20°CPrecip 0.01 in0.2 mm9%Cloud 76%Wind NE 6 mph9 km/hFriday: Overcast and warm, with a high of 79°F26°C and morning low of 70°F21°C. Breezy from the NE at 6 to 9 mph10 to 14 km/h. Friday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the NE at 6 to 8 mph9 to 14 km/h.
DrizzleHigh 81°F27°CLow 67°F19°CPrecip 0.03 in0.8 mm11%Cloud 53%Wind ENE 7 mph11 km/hSaturday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the E at 6 to 7 mph10 to 12 km/h. Saturday Night: Mostly cloudy, with a low around 67°F19°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h. 11% chance of drizzle in the evening.
Light RainHigh 81°F27°CFeels 85°F29°CLow 71°F22°CPrecip 0.28 in7.1 mm61%Cloud 80%Wind SW 8 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 8 to 9 mph13 to 14 km/h. 61% chance of light rain throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 57% chance of light rain throughout the night.
DrizzleHigh 73°F23°CLow 66°F19°CPrecip 0.06 in1.6 mm41%Cloud 58%Wind N 10 mph16 km/hMonday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 69°F20°C. Breezy from the N at 11 to 12 mph18 to 19 km/h. 31% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 66°F19°C. Breezy from the N at 8 to 10 mph14 to 16 km/h. 41% chance of drizzle overnight.
Partly CloudyHigh 79°F26°CLow 63°F17°CPrecip 0 in0 mmCloud 50%Wind SSW 5 mph9 km/hTuesday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 65°F18°C. Light wind from the WSW around 4 mph7 km/h. Tuesday Night: Mostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h.
Light RainHigh 77°F25°CLow 69°F21°CPrecip 0.24 in6.2 mm46%Cloud 78%Wind SSW 10 mph15 km/hWednesday: Overcast and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the SW at 10 to 11 mph17 to 18 km/h. 44% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SSW at 9 mph14 km/h. 46% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1379°F26°C68°F20°C0 in0.1 mm· 3%71%Partly CloudyNNE 5 mph7 km/h
FridayAug 1479°F26°C68°F20°C0.01 in0.2 mm· 9%76%Partly CloudyNE 6 mph9 km/h
SaturdayAug 1581°F27°C67°F19°C0.03 in0.8 mm· 11%53%DrizzleENE 7 mph11 km/h
SundayAug 1681°F27°C
Feels 85°F29°C
71°F22°C0.28 in7.1 mm· 61%80%Light RainSW 8 mph12 km/h
MondayAug 1773°F23°C66°F19°C0.06 in1.6 mm· 41%58%DrizzleN 10 mph16 km/h
TuesdayAug 1879°F26°C63°F17°C0 in0 mm· —50%Partly CloudySSW 5 mph9 km/h
WednesdayAug 1977°F25°C69°F21°C0.24 in6.2 mm· 46%78%Light RainSSW 10 mph15 km/h
ThursdayAug 2074°F23°C66°F19°C0.13 in3.4 mm· 30%53%ShowersNNW 10 mph15 km/h
FridayAug 2174°F24°C63°F17°C0.07 in1.7 mm· 16%44%DrizzleNNW 7 mph11 km/h
SaturdayAug 2276°F25°C64°F18°C0.06 in1.6 mm· 14%39%DrizzleWNW 7 mph11 km/h
SundayAug 2376°F25°C64°F18°C0.06 in1.4 mm· 14%41%DrizzleWNW 7 mph12 km/h
MondayAug 2477°F25°C65°F18°C0.06 in1.5 mm· 14%42%DrizzleWNW 8 mph13 km/h
TuesdayAug 2578°F25°C65°F19°C0.05 in1.3 mm· 14%41%DrizzleWNW 8 mph12 km/h
WednesdayAug 2677°F25°C66°F19°C0.06 in1.6 mm· 15%41%DrizzleNNW 8 mph13 km/h
ThursdayAug 2776°F24°C65°F18°C0.07 in1.9 mm· 19%47%DrizzleN 8 mph12 km/h

Nearby Cities

About This Forecast

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