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

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 79°F26°C	Low 68°F20°C	Precip 0 in0.1 mm3%	Cloud 71%	Wind NNE 5 mph7 km/h	Thursday: 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 Cloudy	High 79°F26°C	Low 68°F20°C	Precip 0.01 in0.2 mm9%	Cloud 76%	Wind NE 6 mph9 km/h	Friday: 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.
Drizzle	High 81°F27°C	Low 67°F19°C	Precip 0.03 in0.8 mm11%	Cloud 53%	Wind ENE 7 mph11 km/h	Saturday: 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 Rain	High 81°F27°CFeels 85°F29°C	Low 71°F22°C	Precip 0.28 in7.1 mm61%	Cloud 80%	Wind SW 8 mph12 km/h	Sunday: 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.
Drizzle	High 73°F23°C	Low 66°F19°C	Precip 0.06 in1.6 mm41%	Cloud 58%	Wind N 10 mph16 km/h	Monday: 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 Cloudy	High 79°F26°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 50%	Wind SSW 5 mph9 km/h	Tuesday: 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 Rain	High 77°F25°C	Low 69°F21°C	Precip 0.24 in6.2 mm46%	Cloud 78%	Wind SSW 10 mph15 km/h	Wednesday: 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 13	79°F26°C	68°F20°C	0 in0.1 mm· 3%	71%	Partly Cloudy	NNE 5 mph7 km/h
DayOvercast 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. NightMostly cloudy, with a low around 68°F20°C. Light wind from the NE around 4 mph7 km/h.
	FridayAug 14	79°F26°C	68°F20°C	0.01 in0.2 mm· 9%	76%	Partly Cloudy	NE 6 mph9 km/h
DayOvercast 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. NightMostly cloudy, with a low around 68°F20°C. Breezy from the NE at 6 to 8 mph9 to 14 km/h.
	SaturdayAug 15	81°F27°C	67°F19°C	0.03 in0.8 mm· 11%	53%	Drizzle	ENE 7 mph11 km/h
DayMostly 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. NightMostly 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.
	SundayAug 16	81°F27°C Feels 85°F29°C	71°F22°C	0.28 in7.1 mm· 61%	80%	Light Rain	SW 8 mph12 km/h
DayOvercast 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. NightMostly 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.
	MondayAug 17	73°F23°C	66°F19°C	0.06 in1.6 mm· 41%	58%	Drizzle	N 10 mph16 km/h
DayMostly 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. NightMostly 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.
	TuesdayAug 18	79°F26°C	63°F17°C	0 in0 mm· —	50%	Partly Cloudy	SSW 5 mph9 km/h
DayMostly 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. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 6 to 9 mph10 to 14 km/h.
	WednesdayAug 19	77°F25°C	69°F21°C	0.24 in6.2 mm· 46%	78%	Light Rain	SSW 10 mph15 km/h
DayOvercast 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. NightMostly 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.
	ThursdayAug 20	74°F23°C	66°F19°C	0.13 in3.4 mm· 30%	53%	Showers	NNW 10 mph15 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 67°F19°C. Breezy from the NNW at 10 to 11 mph16 to 17 km/h. 26% chance of showers throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the NNW at 9 mph14 km/h. 30% chance of showers throughout the night.
	FridayAug 21	74°F24°C	63°F17°C	0.07 in1.7 mm· 16%	44%	Drizzle	NNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F24°C and morning low of 64°F18°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the N at 7 mph11 km/h. 11% chance of drizzle throughout the night.
	SaturdayAug 22	76°F25°C	64°F18°C	0.06 in1.6 mm· 14%	39%	Drizzle	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 65°F18°C. Breezy from the NW at 7 to 8 mph11 to 12 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the W at 7 mph11 km/h. 11% chance of drizzle before dawn.
	SundayAug 23	76°F25°C	64°F18°C	0.06 in1.4 mm· 14%	41%	Drizzle	WNW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 65°F18°C. Breezy from the NW at 8 mph12 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the W at 7 to 8 mph12 to 12 km/h. 14% chance of drizzle throughout the night.
	MondayAug 24	77°F25°C	65°F18°C	0.06 in1.5 mm· 14%	42%	Drizzle	WNW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the WSW at 8 mph12 km/h. 11% chance of drizzle throughout the night.
	TuesdayAug 25	78°F25°C	65°F19°C	0.05 in1.3 mm· 14%	41%	Drizzle	WNW 8 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 9 mph12 to 14 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the WNW at 8 mph12 km/h. 11% chance of drizzle throughout the night.
	WednesdayAug 26	77°F25°C	66°F19°C	0.06 in1.6 mm· 15%	41%	Drizzle	NNW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 66°F19°C. Breezy from the NNW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the NNW at 8 mph12 km/h. 12% chance of drizzle throughout the night.
	ThursdayAug 27	76°F24°C	65°F18°C	0.07 in1.9 mm· 19%	47%	Drizzle	N 8 mph12 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 65°F18°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. 13% chance of drizzle throughout the night.

Nearby Cities

Strathroy40 mi64 km Chatham41 mi65 km Tecumseh52 mi83 km Windsor56 mi91 km London59 mi95 km LaSalle61 mi98 km

About This Forecast

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