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

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 79°F26°C	Low 70°F21°C	Precip 0 in0.1 mm4%	Cloud 83%	Wind NE 5 mph8 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 72°F22°C. Light wind from the ENE around 5 mph8 km/h.
Partly Cloudy	High 79°F26°C	Low 69°F21°C	Precip 0.01 in0.2 mm9%	Cloud 77%	Wind NE 6 mph10 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 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.
Drizzle	High 80°F27°C	Low 67°F19°C	Precip 0.04 in0.9 mm16%	Cloud 58%	Wind E 6 mph10 km/h	Saturday: 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 Rain	High 81°F27°CFeels 86°F30°C	Low 72°F22°C	Precip 0.25 in6.4 mm58%	Cloud 80%	Wind WSW 7 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 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.
Showers	High 73°F23°C	Low 66°F19°C	Precip 0.07 in1.8 mm49%	Cloud 59%	Wind N 10 mph16 km/h	Monday: 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 Cloudy	High 80°F27°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 42%	Wind SSW 5 mph8 km/h	Tuesday: 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 Rain	High 76°F24°C	Low 70°F21°C	Precip 0.22 in5.6 mm47%	Cloud 76%	Wind SW 10 mph16 km/h	Wednesday: 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 13	79°F26°C	70°F21°C	0 in0.1 mm· 4%	83%	Cloudy	NE 5 mph8 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 72°F22°C. Light wind from the ENE around 5 mph8 km/h.
	FridayAug 14	79°F26°C	69°F21°C	0.01 in0.2 mm· 9%	77%	Partly Cloudy	NE 6 mph10 km/h
DayOvercast 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. NightMostly cloudy, with a low around 69°F21°C. Breezy from the NE at 6 to 8 mph9 to 14 km/h.
	SaturdayAug 15	80°F27°C	67°F19°C	0.04 in0.9 mm· 16%	58%	Drizzle	E 6 mph10 km/h
DayMostly 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. NightMostly 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.
	SundayAug 16	81°F27°C Feels 86°F30°C	72°F22°C	0.25 in6.4 mm· 58%	80%	Light Rain	WSW 7 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 7 to 8 mph12 to 13 km/h. 58% chance of light rain throughout the day. Heavy, humid air. NightMostly 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.
	MondayAug 17	73°F23°C	66°F19°C	0.07 in1.8 mm· 49%	59%	Showers	N 10 mph16 km/h
DayMostly 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. NightMostly 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.
	TuesdayAug 18	80°F27°C	63°F17°C	0 in0 mm· —	42%	Partly Cloudy	SSW 5 mph8 km/h
DayPartly 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. NightPartly cloudy, with a low around 63°F17°C. Breezy from the SSW at 6 to 9 mph10 to 15 km/h.
	WednesdayAug 19	76°F24°C	70°F21°C	0.22 in5.6 mm· 47%	76%	Light Rain	SW 10 mph16 km/h
DayOvercast 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. NightMostly 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.
	ThursdayAug 20	74°F23°C	66°F19°C	0.16 in4.1 mm· 30%	52%	Showers	NNW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 66°F19°C. Breezy from the NNW at 9 to 10 mph15 to 16 km/h. 24% chance of showers throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the N at 9 mph14 km/h. 30% chance of showers throughout the night.
	FridayAug 21	75°F24°C	63°F17°C	0.08 in2.1 mm· 17%	50%	Drizzle	NW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the NW at 8 mph12 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the N at 7 mph12 km/h. 16% chance of drizzle throughout the night.
	SaturdayAug 22	77°F25°C	65°F18°C	0.08 in2 mm· 16%	43%	Drizzle	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 65°F18°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the W at 7 mph11 km/h. 16% chance of drizzle throughout the night.
	SundayAug 23	77°F25°C	65°F19°C	0.07 in1.8 mm· 19%	44%	Drizzle	NW 7 mph12 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 7 to 8 mph12 to 13 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the NW at 7 to 8 mph11 to 12 km/h. 17% chance of drizzle throughout the night.
	MondayAug 24	78°F26°C	66°F19°C	0.04 in0.9 mm· 11%	41%	Drizzle	WNW 8 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 11% chance of drizzle. NightPartly cloudy, with a low around 66°F19°C. Breezy from the SW at 8 mph12 km/h.
	TuesdayAug 25	79°F26°C	66°F19°C	0.06 in1.5 mm· 10%	40%	Drizzle	W 7 mph12 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 67°F19°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the SW at 8 mph12 km/h.
	WednesdayAug 26	77°F25°C	66°F19°C	0.07 in1.8 mm· 15%	50%	Drizzle	NNW 8 mph14 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 67°F19°C. Breezy from the NNW at 9 to 10 mph14 to 16 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the NNW at 8 to 9 mph13 to 14 km/h. 13% chance of drizzle throughout the night.
	ThursdayAug 27	75°F24°C	65°F19°C	0.07 in1.8 mm· 15%	50%	Drizzle	N 8 mph14 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the N at 9 mph14 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the NNE at 8 to 9 mph13 to 14 km/h. 14% 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