Current Conditions

Ancaster, Ontario

85°F30°C

Showers

Feels like91°F33°C

Wind

W 4 mph7 km/h

Humidity

65%

Cloud Cover

35%

As of Tuesday, September 1, 2026 at 5:04 PM EDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 85°F30°C — feels like 91°F33°C. Light wind from the W around 5 mph8 km/h. 48% chance of showers throughout the day. Heavy, humid air.

Night

Mostly cloudy, with a low around 73°F23°C. Light wind from the E around 4 mph6 km/h. 30% chance of drizzle in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 85°F30°CFeels 92°F33°C	Low 73°F23°C	Precip 0.05 in1.2 mm48%	Cloud 55%	Wind WSW 4 mph7 km/h	Tuesday: Partly cloudy and warm, with a high of 85°F30°C — feels like 91°F33°C. Light wind from the W around 5 mph8 km/h. 48% chance of showers throughout the day. Heavy, humid air. Tuesday Night: Mostly cloudy, with a low around 73°F23°C. Light wind from the E around 4 mph6 km/h. 30% chance of drizzle in the evening.
Rain	High 84°F29°CFeels 90°F32°C	Low 71°F22°C	Precip 0.36 in9.2 mm74%	Cloud 90%	Wind SW 7 mph11 km/h	Wednesday: Overcast and warm, with a high of 84°F29°C and morning low of 73°F23°C — feels like 90°F32°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. 61% chance of light rain throughout the day. Heavy, humid air. Wednesday Night: Overcast, with a low around 71°F22°C. Light wind from the SW around 4 mph7 km/h. 74% chance of rain throughout the night.
Showers	High 82°F28°C	Low 67°F20°C	Precip 0.15 in3.8 mm35%	Cloud 62%	Wind WNW 5 mph8 km/h	Thursday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F20°C. Breezy from the WNW at 6 to 7 mph9 to 12 km/h. 20% chance of drizzle throughout the day. Humid. Thursday Night: Mostly cloudy, with a low around 67°F20°C. Light wind from the WNW around 5 mph8 km/h. 35% chance of showers throughout the night.
Drizzle	High 79°F26°C	Low 63°F17°C	Precip 0.03 in0.8 mm20%	Cloud 54%	Wind NNW 5 mph8 km/h	Friday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Light wind from the NNW around 5 mph8 km/h. Friday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the N around 5 mph8 km/h. 20% chance of drizzle overnight.
Clear	High 76°F24°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 31%	Wind NNE 6 mph9 km/h	Saturday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 60°F16°C. Light wind from the NNE around 6 mph10 km/h. Saturday Night: Mostly clear, with a low around 59°F15°C. Light wind from the NNE around 5 mph9 km/h.
Drizzle	High 73°F23°C	Low 58°F15°C	Precip 0.01 in0.2 mm11%	Cloud 39%	Wind ENE 5 mph8 km/h	Sunday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 61°F16°C. Light wind from the ENE around 6 mph10 km/h. 11% chance of drizzle. Sunday Night: Partly cloudy, with a low around 58°F15°C. Light wind from the ENE around 4 mph7 km/h.
Partly Cloudy	High 76°F25°C	Low 56°F13°C	Precip 0.01 in0.3 mm6%	Cloud 54%	Wind E 4 mph7 km/h	Monday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 59°F15°C. Light wind from the E around 4 mph7 km/h. Monday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the ENE around 4 mph7 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 1	85°F30°C Feels 92°F33°C	73°F23°C	0.05 in1.2 mm· 48%	55%	Showers	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 85°F30°C — feels like 91°F33°C. Light wind from the W around 5 mph8 km/h. 48% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 73°F23°C. Light wind from the E around 4 mph6 km/h. 30% chance of drizzle in the evening.
	WednesdaySep 2	84°F29°C Feels 90°F32°C	71°F22°C	0.36 in9.2 mm· 74%	90%	Rain	SW 7 mph11 km/h
DayOvercast and warm, with a high of 84°F29°C and morning low of 73°F23°C — feels like 90°F32°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. 61% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 71°F22°C. Light wind from the SW around 4 mph7 km/h. 74% chance of rain throughout the night.
	ThursdaySep 3	82°F28°C	67°F20°C	0.15 in3.8 mm· 35%	62%	Showers	WNW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F20°C. Breezy from the WNW at 6 to 7 mph9 to 12 km/h. 20% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 67°F20°C. Light wind from the WNW around 5 mph8 km/h. 35% chance of showers throughout the night.
	FridaySep 4	79°F26°C	63°F17°C	0.03 in0.8 mm· 20%	54%	Drizzle	NNW 5 mph8 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Light wind from the NNW around 5 mph8 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the N around 5 mph8 km/h. 20% chance of drizzle overnight.
	SaturdaySep 5	76°F24°C	59°F15°C	0 in0 mm· —	31%	Clear	NNE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 60°F16°C. Light wind from the NNE around 6 mph10 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the NNE around 5 mph9 km/h.
	SundaySep 6	73°F23°C	58°F15°C	0.01 in0.2 mm· 11%	39%	Drizzle	ENE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 61°F16°C. Light wind from the ENE around 6 mph10 km/h. 11% chance of drizzle. NightPartly cloudy, with a low around 58°F15°C. Light wind from the ENE around 4 mph7 km/h.
	MondaySep 7	76°F25°C	56°F13°C	0.01 in0.3 mm· 6%	54%	Partly Cloudy	E 4 mph7 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 59°F15°C. Light wind from the E around 4 mph7 km/h. NightPartly cloudy, with a low around 56°F13°C. Light wind from the ENE around 4 mph7 km/h.
	TuesdaySep 8	74°F23°C	61°F16°C	0.04 in1.1 mm· 15%	80%	Drizzle	ESE 6 mph10 km/h
DayOvercast and warm, with a high of 74°F23°C and morning low of 62°F17°C. Breezy from the ESE at 7 mph11 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Light wind from the E around 6 mph9 km/h. 10% chance of drizzle before dawn.
	WednesdaySep 9	78°F26°C	65°F19°C	0.12 in3.1 mm· 27%	74%	Drizzle	SW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 66°F19°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 27% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 65°F19°C. Breezy from the SW at 7 to 8 mph11 to 12 km/h. 19% chance of drizzle throughout the night.
	ThursdaySep 10	77°F25°C	66°F19°C	0.14 in3.5 mm· 22%	63%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 67°F20°C. Breezy from the W at 9 to 10 mph14 to 16 km/h. 22% chance of drizzle throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the W at 7 mph12 km/h. 22% chance of showers throughout the night.
	FridaySep 11	74°F23°C	62°F17°C	0.09 in2.4 mm· 14%	54%	Drizzle	WNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 62°F17°C. Breezy from the WNW at 8 mph12 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 62°F17°C. Light wind from the WNW around 6 mph10 km/h. 13% chance of drizzle throughout the night.
	SaturdaySep 12	75°F24°C	60°F16°C	0.12 in3 mm· 20%	56%	Showers	WSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 61°F16°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 20% chance of showers throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the WSW at 6 to 7 mph10 to 11 km/h. 17% chance of drizzle throughout the night.
	SundaySep 13	75°F24°C	62°F17°C	0.15 in3.8 mm· 26%	60%	Showers	WSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 63°F17°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 26% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F17°C. Breezy from the WSW at 7 mph11 km/h. 18% chance of showers throughout the night.
	MondaySep 14	72°F22°C	62°F16°C	0.13 in3.3 mm· 17%	57%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 62°F17°C. Breezy from the W at 9 mph14 km/h. 17% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F16°C. Breezy from the W at 7 to 8 mph12 to 12 km/h. 15% chance of showers throughout the night.
	TuesdaySep 15	72°F22°C	59°F15°C	0.07 in1.9 mm· 14%	49%	Drizzle	W 7 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 59°F15°C. Breezy from the W at 7 mph11 km/h. 14% chance of drizzle throughout the night.

Nearby Cities

Hamilton7 mi12 km Waterdown10 mi15 km Stoney Creek11 mi18 km Burlington14 mi22 km Brantford15 mi25 km Christopher-Champlain18 mi29 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: 43.2181°N, 79.9872°W·Elevation: 253m·Timezone: America/Toronto·Population: 40,557