Current Conditions

Caledon, Ontario

69°F21°C

Rain

Wind

S 5 mph8 km/h

Humidity

96%

Cloud Cover

99%

As of Wednesday, September 2, 2026 at 5:43 AM EDT

Today's Outlook

Day

Overcast and warm, with a high of 80°F26°C and morning low of 70°F21°C. Breezy from the SW at 7 to 9 mph11 to 14 km/h. 91% chance of rain throughout the day. Heavy, humid air.

Night

Overcast, with a low around 67°F19°C. Light wind from the SSW around 5 mph8 km/h. 94% chance of rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F26°C	Low 67°F19°C	Precip 0.74 in18.9 mm94%	Cloud 91%	Wind SW 6 mph10 km/h	Wednesday: Overcast and warm, with a high of 80°F26°C and morning low of 70°F21°C. Breezy from the SW at 7 to 9 mph11 to 14 km/h. 91% chance of rain throughout the day. Heavy, humid air. Wednesday Night: Overcast, with a low around 67°F19°C. Light wind from the SSW around 5 mph8 km/h. 94% chance of rain throughout the night.
Drizzle	High 79°F26°C	Low 63°F17°C	Precip 0.06 in1.6 mm20%	Cloud 61%	Wind WNW 5 mph9 km/h	Thursday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the WNW at 6 to 7 mph10 to 12 km/h. 16% chance of drizzle in the morning. Thursday Night: Mostly cloudy, with a low around 63°F17°C. Light wind from the NW around 5 mph8 km/h. 20% chance of drizzle throughout the night.
Partly Cloudy	High 76°F25°C	Low 61°F16°C	Precip 0.01 in0.3 mm5%	Cloud 48%	Wind NNW 6 mph10 km/h	Friday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 62°F17°C. Breezy from the NNW at 6 to 8 mph10 to 13 km/h. Friday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h.
Clear	High 73°F23°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 31%	Wind N 7 mph11 km/h	Saturday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 58°F15°C. Breezy from the N at 7 to 8 mph12 to 13 km/h. Saturday Night: Mostly clear, with a low around 56°F13°C. Light wind from the N around 6 mph9 km/h.
Clear	High 73°F23°C	Low 55°F13°C	Precip 0 in0.1 mm5%	Cloud 36%	Wind NE 4 mph7 km/h	Sunday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Light wind from the ENE around 4 mph7 km/h. Sunday Night: Mostly clear, with a low around 55°F13°C. Light wind from the NE around 4 mph6 km/h.
Partly Cloudy	High 76°F24°C	Low 52°F11°C	Precip 0 in0 mm—	Cloud 42%	Wind N 4 mph6 km/h	Monday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 54°F12°C. Light wind from the N around 4 mph6 km/h. Monday Night: Partly cloudy, with a low around 52°F11°C. Light wind from the N around 4 mph6 km/h.
Partly Cloudy	High 74°F24°C	Low 55°F13°C	Precip 0.01 in0.3 mm8%	Cloud 80%	Wind SSE 5 mph8 km/h	Tuesday: Overcast and warm, with a high of 74°F24°C and morning low of 57°F14°C. Light wind from the SSE around 5 mph8 km/h. Tuesday Night: Mostly cloudy, with a low around 55°F13°C. Light wind from the SSE around 5 mph8 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	80°F26°C	67°F19°C	0.74 in18.9 mm· 94%	91%	Rain	SW 6 mph10 km/h
DayOvercast and warm, with a high of 80°F26°C and morning low of 70°F21°C. Breezy from the SW at 7 to 9 mph11 to 14 km/h. 91% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 67°F19°C. Light wind from the SSW around 5 mph8 km/h. 94% chance of rain throughout the night.
	ThursdaySep 3	79°F26°C	63°F17°C	0.06 in1.6 mm· 20%	61%	Drizzle	WNW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the WNW at 6 to 7 mph10 to 12 km/h. 16% chance of drizzle in the morning. NightMostly cloudy, with a low around 63°F17°C. Light wind from the NW around 5 mph8 km/h. 20% chance of drizzle throughout the night.
	FridaySep 4	76°F25°C	61°F16°C	0.01 in0.3 mm· 5%	48%	Partly Cloudy	NNW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 62°F17°C. Breezy from the NNW at 6 to 8 mph10 to 13 km/h. NightPartly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h.
	SaturdaySep 5	73°F23°C	56°F13°C	0 in0 mm· —	31%	Clear	N 7 mph11 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 58°F15°C. Breezy from the N at 7 to 8 mph12 to 13 km/h. NightMostly clear, with a low around 56°F13°C. Light wind from the N around 6 mph9 km/h.
	SundaySep 6	73°F23°C	55°F13°C	0 in0.1 mm· 5%	36%	Clear	NE 4 mph7 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Light wind from the ENE around 4 mph7 km/h. NightMostly clear, with a low around 55°F13°C. Light wind from the NE around 4 mph6 km/h.
	MondaySep 7	76°F24°C	52°F11°C	0 in0 mm· —	42%	Partly Cloudy	N 4 mph6 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 54°F12°C. Light wind from the N around 4 mph6 km/h. NightPartly cloudy, with a low around 52°F11°C. Light wind from the N around 4 mph6 km/h.
	TuesdaySep 8	74°F24°C	55°F13°C	0.01 in0.3 mm· 8%	80%	Partly Cloudy	SSE 5 mph8 km/h
DayOvercast and warm, with a high of 74°F24°C and morning low of 57°F14°C. Light wind from the SSE around 5 mph8 km/h. NightMostly cloudy, with a low around 55°F13°C. Light wind from the SSE around 5 mph8 km/h.
	WednesdaySep 9	79°F26°C	62°F17°C	0.09 in2.2 mm· 24%	71%	Drizzle	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the SW at 9 to 10 mph14 to 16 km/h. 24% chance of drizzle throughout the day. NightMostly cloudy, with a low around 62°F17°C. Breezy from the SW at 8 to 9 mph12 to 14 km/h. 17% chance of drizzle throughout the night.
	ThursdaySep 10	78°F26°C	66°F19°C	0.14 in3.5 mm· 24%	60%	Showers	W 9 mph14 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 68°F20°C. Breezy from the W at 10 to 11 mph15 to 17 km/h. 24% chance of showers throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the W at 8 to 9 mph13 to 15 km/h. 16% chance of drizzle throughout the night.
	FridaySep 11	73°F23°C	61°F16°C	0.17 in4.2 mm· 25%	60%	Showers	WNW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 62°F16°C. Breezy from the W at 8 mph13 km/h. 25% chance of showers throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the WNW at 7 mph11 km/h. 18% chance of showers throughout the night.
	SaturdaySep 12	72°F22°C	59°F15°C	0.17 in4.4 mm· 24%	66%	Showers	WSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 60°F15°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 24% chance of light rain throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the WSW at 7 mph11 km/h. 22% chance of showers throughout the night.
	SundaySep 13	72°F22°C	60°F15°C	0.24 in6.1 mm· 38%	69%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 61°F16°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 38% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F15°C. Breezy from the WSW at 7 mph12 km/h. 31% chance of showers throughout the night.
	MondaySep 14	71°F22°C	59°F15°C	0.13 in3.2 mm· 23%	63%	Showers	WSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the WSW at 8 to 9 mph14 to 15 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the W at 7 mph11 km/h. 20% chance of showers throughout the night.
	TuesdaySep 15	71°F22°C	56°F13°C	0.11 in2.8 mm· 23%	55%	Showers	WSW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 57°F14°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 23% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the WSW at 7 mph11 km/h. 16% chance of drizzle throughout the night.
	WednesdaySep 16	71°F22°C	56°F13°C	0.09 in2.3 mm· 18%	54%	Drizzle	W 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 56°F14°C. Breezy from the WSW at 8 to 9 mph12 to 14 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the W at 7 mph11 km/h. 16% chance of drizzle throughout the night.

Nearby Cities

Orangeville6 mi10 km Bolton13 mi21 km Georgetown15 mi25 km Halton Hills16 mi26 km Brampton17 mi27 km Alliston21 mi33 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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 43.8654°N, 79.9932°W·Elevation: 437m·Timezone: America/Toronto·Population: 76,581