Current Conditions

Sarnia, Ontario

62°F17°C

Clear

Wind

SSW 6 mph10 km/h

Humidity

76%

Cloud Cover

14%

As of Friday, July 24, 2026 at 12:33 AM EDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 78°F26°C and morning low of 64°F18°C. Light wind from the SE around 4 mph7 km/h.

Night

Mostly clear, with a low around 60°F15°C. Light wind from the S around 6 mph9 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
FridayJul 24	Clear	High 78°F26°C	Low 60°F15°C	Precip 0 in0 mm—	Cloud 24%	Wind SSE 5 mph8 km/h	Friday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 64°F18°C. Light wind from the SE around 4 mph7 km/h. Friday Night: Mostly clear, with a low around 60°F15°C. Light wind from the S around 6 mph9 km/h.
SaturdayJul 25	Clear	High 82°F28°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 24%	Wind SSW 4 mph7 km/h	Saturday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Light wind from the SW around 4 mph6 km/h. Saturday Night: Mostly clear, with a low around 63°F17°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h.
SundayJul 26	Drizzle	High 84°F29°CFeels 87°F30°C	Low 69°F21°C	Precip 0.04 in1.1 mm18%	Cloud 39%	Wind SW 5 mph9 km/h	Sunday: Partly cloudy and warm, with a high of 84°F29°C and morning low of 71°F22°C. Light wind from the WSW around 5 mph8 km/h. 18% chance of drizzle throughout the day. Humid. Sunday Night: Partly cloudy, with a low around 69°F21°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle in the evening.
MondayJul 27	Showers	High 82°F28°C	Low 72°F22°C	Precip 0.2 in5.1 mm35%	Cloud 55%	Wind SW 6 mph10 km/h	Monday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 73°F23°C. Breezy from the W at 7 mph11 km/h. 35% chance of showers throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 72°F22°C. Light wind from the SSW around 6 mph10 km/h. 31% chance of showers throughout the night.
TuesdayJul 28	Showers	High 77°F25°C	Low 69°F20°C	Precip 0.23 in5.8 mm34%	Cloud 38%	Wind N 10 mph15 km/h	Tuesday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 71°F21°C. Breezy from the N at 10 to 13 mph17 to 21 km/h. 31% chance of showers throughout the day. Humid. Tuesday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the N at 9 to 12 mph14 to 19 km/h. 34% chance of showers throughout the night.
WednesdayJul 29	Clear	High 75°F24°C	Low 66°F19°C	Precip 0.01 in0.2 mm4%	Cloud 12%	Wind N 10 mph16 km/h	Wednesday: Mostly clear and warm, with a high of 75°F24°C and morning low of 67°F20°C. Breezy from the N at 11 to 12 mph18 to 20 km/h. Wednesday Night: Mostly clear, with a low around 66°F19°C. Breezy from the N at 9 to 10 mph15 to 16 km/h.
ThursdayJul 30	Clear	High 80°F27°C	Low 64°F18°C	Precip 0 in0.1 mm4%	Cloud 14%	Wind N 7 mph11 km/h	Thursday: Mostly clear and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the N at 7 to 8 mph11 to 13 km/h. Thursday Night: Mostly clear, with a low around 64°F18°C. Breezy from the NNE at 7 mph11 km/h.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	FridayJul 24	78°F26°C	60°F15°C	0 in0 mm· —	24%	Clear	SSE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 64°F18°C. Light wind from the SE around 4 mph7 km/h. NightMostly clear, with a low around 60°F15°C. Light wind from the S around 6 mph9 km/h.
	SaturdayJul 25	82°F28°C	63°F17°C	0 in0 mm· —	24%	Clear	SSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Light wind from the SW around 4 mph6 km/h. NightMostly clear, with a low around 63°F17°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h.
	SundayJul 26	84°F29°C Feels 87°F30°C	69°F21°C	0.04 in1.1 mm· 18%	39%	Drizzle	SW 5 mph9 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 71°F22°C. Light wind from the WSW around 5 mph8 km/h. 18% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 69°F21°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle in the evening.
	MondayJul 27	82°F28°C	72°F22°C	0.2 in5.1 mm· 35%	55%	Showers	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 73°F23°C. Breezy from the W at 7 mph11 km/h. 35% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 72°F22°C. Light wind from the SSW around 6 mph10 km/h. 31% chance of showers throughout the night.
	TuesdayJul 28	77°F25°C	69°F20°C	0.23 in5.8 mm· 34%	38%	Showers	N 10 mph15 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 71°F21°C. Breezy from the N at 10 to 13 mph17 to 21 km/h. 31% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 69°F20°C. Breezy from the N at 9 to 12 mph14 to 19 km/h. 34% chance of showers throughout the night.
	WednesdayJul 29	75°F24°C	66°F19°C	0.01 in0.2 mm· 4%	12%	Clear	N 10 mph16 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 67°F20°C. Breezy from the N at 11 to 12 mph18 to 20 km/h. NightMostly clear, with a low around 66°F19°C. Breezy from the N at 9 to 10 mph15 to 16 km/h.
	ThursdayJul 30	80°F27°C	64°F18°C	0 in0.1 mm· 4%	14%	Clear	N 7 mph11 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the N at 7 to 8 mph11 to 13 km/h. NightMostly clear, with a low around 64°F18°C. Breezy from the NNE at 7 mph11 km/h.
	FridayJul 31	84°F29°C	67°F19°C	0.06 in1.4 mm· 19%	43%	Drizzle	SSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 69°F21°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle in the morning. NightPartly cloudy, with a low around 67°F19°C. Breezy from the SSW at 6 to 8 mph10 to 12 km/h. 19% chance of drizzle throughout the night.
	SaturdayAug 1	80°F27°C	70°F21°C	0.14 in3.5 mm· 26%	50%	Showers	WNW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the NW at 7 to 8 mph12 to 14 km/h. 26% chance of showers throughout the day. NightMostly cloudy, with a low around 70°F21°C. Breezy from the WNW at 7 mph11 km/h. 26% chance of showers throughout the night.
	SundayAug 2	78°F26°C	67°F20°C	0.07 in1.8 mm· 20%	40%	Drizzle	NNW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 69°F20°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 20% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Breezy from the N at 7 to 8 mph11 to 12 km/h. 17% chance of drizzle throughout the night.
	MondayAug 3	80°F27°C	66°F19°C	0.06 in1.6 mm· 11%	39%	Drizzle	WSW 8 mph12 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Breezy from the WNW at 8 to 9 mph13 to 15 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 11% chance of drizzle throughout the night.
	TuesdayAug 4	81°F27°C	68°F20°C	0.12 in3 mm· 21%	48%	Showers	SSW 8 mph14 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 70°F21°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 21% chance of showers throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 18% chance of drizzle throughout the night.
	WednesdayAug 5	79°F26°C	69°F20°C	0.13 in3.2 mm· 23%	54%	Drizzle	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 70°F21°C. Breezy from the SW at 9 mph14 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F20°C. Breezy from the SW at 8 mph13 km/h. 21% chance of drizzle throughout the night.
	ThursdayAug 6	77°F25°C	67°F19°C	0.12 in3 mm· 20%	46%	Showers	W 8 mph13 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the W at 9 mph14 km/h. 20% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Breezy from the W at 8 mph13 km/h. 20% chance of showers throughout the night.
	FridayAug 7	78°F26°C	66°F19°C	0.06 in1.5 mm· 17%	44%	Drizzle	WSW 8 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 67°F20°C. Breezy from the WSW at 8 mph13 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the SW at 7 to 8 mph12 to 12 km/h. 15% 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