Current Conditions

Markham, Ontario

73°F23°C

Cloudy

Wind

S 5 mph8 km/h

Humidity

65%

Cloud Cover

96%

As of Tuesday, September 8, 2026 at 2:10 PM EDT

Today's Outlook

Day

Overcast and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the SSE at 4 to 7 mph7 to 11 km/h.

Night

Overcast, with a low around 66°F19°C. Breezy from the SE at 7 to 8 mph11 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 73°F23°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 90%	Wind SE 5 mph8 km/h	Tuesday: Overcast and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the SSE at 4 to 7 mph7 to 11 km/h. Tuesday Night: Overcast, with a low around 66°F19°C. Breezy from the SE at 7 to 8 mph11 to 12 km/h.
Rain	High 72°F22°C	Low 67°F19°C	Precip 0.42 in10.7 mm100%	Cloud 91%	Wind SW 10 mph16 km/h	Wednesday: Overcast and warm, with a high of 72°F22°C. Breezy from the SW at 11 to 15 mph18 to 24 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 67°F19°C. Breezy from the SW at 9 to 13 mph14 to 20 km/h. 74% chance of light rain before dawn.
Partly Cloudy	High 72°F22°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 52%	Wind WNW 11 mph17 km/h	Thursday: Overcast and warm, with a high of 72°F22°C and morning low of 64°F18°C. Breezy from the WNW at 11 to 14 mph18 to 22 km/h. Thursday Night: Mostly clear, with a low around 59°F15°C. Breezy from the WNW at 10 to 11 mph16 to 18 km/h.
Clear	High 71°F22°C	Low 54°F12°C	Precip 0 in0 mm—	Cloud 9%	Wind W 6 mph10 km/h	Friday: Mostly clear and warm, with a high of 71°F22°C and morning low of 55°F13°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. Friday Night: Mostly clear, with a low around 54°F12°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h.
Drizzle	High 74°F23°C	Low 58°F14°C	Precip 0.02 in0.4 mm11%	Cloud 43%	Wind SSE 8 mph12 km/h	Saturday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 60°F15°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. Saturday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 11% chance of drizzle overnight.
Drizzle	High 74°F23°C	Low 61°F16°C	Precip 0.07 in1.8 mm16%	Cloud 46%	Wind WNW 9 mph15 km/h	Sunday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the WNW at 9 to 11 mph15 to 18 km/h. 16% chance of drizzle throughout the day. Sunday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the WNW at 9 to 11 mph15 to 17 km/h. 14% chance of drizzle overnight.
Partly Cloudy	High 68°F20°C	Low 56°F14°C	Precip 0.01 in0.3 mm5%	Cloud 47%	Wind NNW 8 mph13 km/h	Monday: Mostly cloudy and mild, with a high of 68°F20°C and morning low of 56°F14°C. Breezy from the NNW at 8 mph13 km/h. Dry air. Monday Night: Partly cloudy, with a low around 56°F14°C. Breezy from the NNW at 9 mph14 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	73°F23°C	61°F16°C	0 in0 mm· —	90%	Cloudy	SE 5 mph8 km/h
DayOvercast and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the SSE at 4 to 7 mph7 to 11 km/h. NightOvercast, with a low around 66°F19°C. Breezy from the SE at 7 to 8 mph11 to 12 km/h.
	WednesdaySep 9	72°F22°C	67°F19°C	0.42 in10.7 mm· 100%	91%	Rain	SW 10 mph16 km/h
DayOvercast and warm, with a high of 72°F22°C. Breezy from the SW at 11 to 15 mph18 to 24 km/h. 100% chance of rain throughout the day. Humid. NightOvercast, with a low around 67°F19°C. Breezy from the SW at 9 to 13 mph14 to 20 km/h. 74% chance of light rain before dawn.
	ThursdaySep 10	72°F22°C	59°F15°C	0 in0 mm· —	52%	Partly Cloudy	WNW 11 mph17 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 64°F18°C. Breezy from the WNW at 11 to 14 mph18 to 22 km/h. NightMostly clear, with a low around 59°F15°C. Breezy from the WNW at 10 to 11 mph16 to 18 km/h.
	FridaySep 11	71°F22°C	54°F12°C	0 in0 mm· —	9%	Clear	W 6 mph10 km/h
DayMostly clear and warm, with a high of 71°F22°C and morning low of 55°F13°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. NightMostly clear, with a low around 54°F12°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h.
	SaturdaySep 12	74°F23°C	58°F14°C	0.02 in0.4 mm· 11%	43%	Drizzle	SSE 8 mph12 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 60°F15°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 11% chance of drizzle overnight.
	SundaySep 13	74°F23°C	61°F16°C	0.07 in1.8 mm· 16%	46%	Drizzle	WNW 9 mph15 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the WNW at 9 to 11 mph15 to 18 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 61°F16°C. Breezy from the WNW at 9 to 11 mph15 to 17 km/h. 14% chance of drizzle overnight.
	MondaySep 14	68°F20°C	56°F14°C	0.01 in0.3 mm· 5%	47%	Partly Cloudy	NNW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 56°F14°C. Breezy from the NNW at 8 mph13 km/h. Dry air. NightPartly cloudy, with a low around 56°F14°C. Breezy from the NNW at 9 mph14 km/h.
	TuesdaySep 15	73°F23°C	60°F16°C	0.15 in3.8 mm· 33%	70%	Showers	S 11 mph18 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 63°F17°C. Breezy from the S at 12 to 14 mph20 to 22 km/h. 33% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the S at 10 to 11 mph17 to 18 km/h. 25% chance of showers throughout the night.
	WednesdaySep 16	72°F22°C	63°F17°C	0.1 in2.6 mm· 22%	62%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 63°F17°C. Breezy from the W at 8 mph12 km/h. 17% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the W at 8 to 10 mph13 to 17 km/h. 22% chance of showers throughout the night.
	ThursdaySep 17	71°F22°C	61°F16°C	0.18 in4.5 mm· 27%	65%	Showers	SE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 62°F16°C. Breezy from the SE at 8 to 9 mph13 to 14 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the SE at 8 to 9 mph13 to 15 km/h. 27% chance of showers throughout the night.
	FridaySep 18	70°F21°C	62°F17°C	0.2 in5 mm· 28%	66%	Showers	W 10 mph17 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 64°F18°C. Breezy from the WSW at 11 to 12 mph17 to 19 km/h. 28% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F17°C. Breezy from the W at 10 to 11 mph16 to 17 km/h. 24% chance of showers throughout the night.
	SaturdaySep 19	65°F18°C	57°F14°C	0.13 in3.4 mm· 19%	60%	Showers	NW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 58°F14°C. Breezy from the WNW at 10 mph16 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the NW at 10 mph16 km/h. 19% chance of drizzle throughout the night.
	SundaySep 20	63°F17°C	54°F12°C	0.14 in3.6 mm· 21%	57%	Showers	NW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 54°F12°C. Breezy from the WNW at 10 to 11 mph16 to 17 km/h. 21% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the NW at 10 mph16 km/h. 20% chance of showers throughout the night.
	MondaySep 21	62°F17°C	52°F11°C	0.12 in3.1 mm· 16%	57%	Showers	NNW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 52°F11°C. Breezy from the NW at 10 mph16 km/h. 16% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 52°F11°C. Breezy from the NNW at 10 mph15 km/h. 15% chance of drizzle throughout the night.
	TuesdaySep 22	62°F17°C	52°F11°C	0.14 in3.6 mm· 22%	56%	Showers	ENE 10 mph16 km/h
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 52°F11°C. Breezy from the ESE at 10 to 11 mph16 to 17 km/h. 22% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 52°F11°C. Breezy from the NNE at 9 to 10 mph15 to 16 km/h. 18% chance of showers throughout the night.

Nearby Cities

Milliken3 mi5 km Agincourt North4 mi7 km Malvern5 mi7 km Steeles5 mi8 km Agincourt South-Malvern West5 mi9 km L'Amoreaux5 mi9 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: 43.8668°N, 79.2663°W·Elevation: 168m·Timezone: America/Toronto·Population: 338,503