Current Conditions

Cornwall, Ontario

62°F17°C

Clear

Wind

SW 10 mph16 km/h

Humidity

68%

Cloud Cover

As of Friday, July 24, 2026 at 12:28 AM EDT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 82°F28°C and morning low of 62°F17°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h.

Night

Mostly clear, with a low around 55°F13°C. Breezy from the SSW at 6 to 8 mph10 to 13 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
FridayJul 24	Clear	High 82°F28°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 29%	Wind SW 6 mph10 km/h	Friday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 62°F17°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. Friday Night: Mostly clear, with a low around 55°F13°C. Breezy from the SSW at 6 to 8 mph10 to 13 km/h.
SaturdayJul 25	Clear	High 86°F30°C	Low 55°F13°C	Precip 0 in0 mm—	Cloud 33%	Wind S 4 mph7 km/h	Saturday: Partly cloudy and warm, with a high of 86°F30°C and morning low of 65°F19°C. Light wind from the SSW around 4 mph7 km/h. Saturday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the S around 4 mph7 km/h.
SundayJul 26	Drizzle	High 85°F29°C	Low 62°F17°C	Precip 0.02 in0.5 mm25%	Cloud 47%	Wind SSW 4 mph7 km/h	Sunday: Partly cloudy and warm, with a high of 85°F29°C and morning low of 68°F20°C. Light wind from the SW around 4 mph6 km/h. 13% chance of drizzle in the afternoon. Sunday Night: Mostly cloudy, with a low around 62°F17°C. Light wind from the SSW around 5 mph7 km/h. 25% chance of drizzle in the evening.
MondayJul 27	Showers	High 81°F27°C	Low 65°F18°C	Precip 0.17 in4.2 mm58%	Cloud 60%	Wind SSW 4 mph7 km/h	Monday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 69°F21°C. Light wind from the SW around 4 mph6 km/h. 56% chance of showers throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the SSW around 5 mph8 km/h. 58% chance of showers throughout the night.
TuesdayJul 28	Rain	High 77°F25°C	Low 65°F18°C	Precip 0.41 in10.3 mm76%	Cloud 76%	Wind NW 4 mph6 km/h	Tuesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the NNW around 4 mph6 km/h. 76% chance of rain throughout the day. Humid. Tuesday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the SW around 4 mph7 km/h. 71% chance of light rain throughout the night.
WednesdayJul 29	Light Rain	High 75°F24°C	Low 63°F17°C	Precip 0.24 in6.1 mm54%	Cloud 71%	Wind N 5 mph8 km/h	Wednesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Light wind from the N around 5 mph9 km/h. 54% chance of light rain throughout the day. Wednesday Night: Mostly cloudy, with a low around 63°F17°C. Light wind from the NNW around 5 mph8 km/h. 46% chance of showers throughout the night.
ThursdayJul 30	Drizzle	High 80°F27°C	Low 61°F16°C	Precip 0.08 in2 mm25%	Cloud 45%	Wind NW 5 mph8 km/h	Thursday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 65°F18°C. Light wind from the NW around 5 mph8 km/h. 25% chance of drizzle throughout the day. Thursday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the WNW around 5 mph8 km/h. 20% chance of drizzle throughout the night.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	FridayJul 24	82°F28°C	55°F13°C	0 in0 mm· —	29%	Clear	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 62°F17°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. NightMostly clear, with a low around 55°F13°C. Breezy from the SSW at 6 to 8 mph10 to 13 km/h.
	SaturdayJul 25	86°F30°C	55°F13°C	0 in0 mm· —	33%	Clear	S 4 mph7 km/h
DayPartly cloudy and warm, with a high of 86°F30°C and morning low of 65°F19°C. Light wind from the SSW around 4 mph7 km/h. NightPartly cloudy, with a low around 55°F13°C. Light wind from the S around 4 mph7 km/h.
	SundayJul 26	85°F29°C	62°F17°C	0.02 in0.5 mm· 25%	47%	Drizzle	SSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 68°F20°C. Light wind from the SW around 4 mph6 km/h. 13% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 62°F17°C. Light wind from the SSW around 5 mph7 km/h. 25% chance of drizzle in the evening.
	MondayJul 27	81°F27°C	65°F18°C	0.17 in4.2 mm· 58%	60%	Showers	SSW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 69°F21°C. Light wind from the SW around 4 mph6 km/h. 56% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 65°F18°C. Light wind from the SSW around 5 mph8 km/h. 58% chance of showers throughout the night.
	TuesdayJul 28	77°F25°C	65°F18°C	0.41 in10.3 mm· 76%	76%	Rain	NW 4 mph6 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the NNW around 4 mph6 km/h. 76% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 65°F18°C. Light wind from the SW around 4 mph7 km/h. 71% chance of light rain throughout the night.
	WednesdayJul 29	75°F24°C	63°F17°C	0.24 in6.1 mm· 54%	71%	Light Rain	N 5 mph8 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Light wind from the N around 5 mph9 km/h. 54% chance of light rain throughout the day. NightMostly cloudy, with a low around 63°F17°C. Light wind from the NNW around 5 mph8 km/h. 46% chance of showers throughout the night.
	ThursdayJul 30	80°F27°C	61°F16°C	0.08 in2 mm· 25%	45%	Drizzle	NW 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 NW around 5 mph8 km/h. 25% chance of drizzle throughout the day. NightPartly cloudy, with a low around 61°F16°C. Light wind from the WNW around 5 mph8 km/h. 20% chance of drizzle throughout the night.
	FridayJul 31	84°F29°C	60°F16°C	0.04 in0.9 mm· 9%	40%	Partly Cloudy	SW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 66°F19°C. Light wind from the WSW around 5 mph9 km/h. NightPartly cloudy, with a low around 60°F16°C. Breezy from the SW at 6 to 7 mph9 to 11 km/h.
	SaturdayAug 1	83°F28°C	65°F18°C	0.14 in3.5 mm· 35%	59%	Showers	SW 7 mph10 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 69°F20°C. Breezy from the SW at 7 mph11 km/h. 35% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 32% chance of showers throughout the night.
	SundayAug 2	79°F26°C	64°F18°C	0.17 in4.3 mm· 31%	59%	Showers	SW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 67°F20°C. Light wind from the WSW around 5 mph9 km/h. 31% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Light wind from the SW around 5 mph9 km/h. 25% chance of showers throughout the night.
	MondayAug 3	80°F27°C	62°F17°C	0.12 in3 mm· 25%	52%	Showers	SW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Light wind from the WSW around 5 mph9 km/h. 25% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the SW around 5 mph9 km/h. 14% chance of drizzle throughout the night.
	TuesdayAug 4	82°F28°C	63°F17°C	0.09 in2.4 mm· 20%	54%	Drizzle	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Breezy from the SW at 6 to 7 mph10 to 12 km/h. 20% chance of drizzle throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle throughout the night.
	WednesdayAug 5	81°F27°C	64°F18°C	0.15 in3.9 mm· 26%	57%	Showers	SW 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 SW at 7 mph11 km/h. 26% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the SSW at 7 mph11 km/h. 24% chance of showers throughout the night.
	ThursdayAug 6	79°F26°C	65°F18°C	0.22 in5.7 mm· 32%	58%	Showers	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Breezy from the WSW at 7 mph11 km/h. 32% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Light wind from the SW around 6 mph10 km/h. 25% chance of showers throughout the night.
	FridayAug 7	79°F26°C	63°F17°C	0.09 in2.2 mm· 27%	54%	Drizzle	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the WSW at 7 mph11 km/h. 27% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SW around 6 mph10 km/h. 19% chance of drizzle throughout the night.

Nearby Cities

Les Coteaux30 mi49 km Salaberry-de-Valleyfield33 mi53 km Saint-Lazare39 mi63 km Vaudreuil-Dorion43 mi69 km Clarence-Rockland46 mi74 km Orléans48 mi78 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 45.0181°N, 74.7281°W·Elevation: 59m·Timezone: America/Toronto·Population: 48,821