Current Conditions

Alliston, Ontario

75°F24°C

Cloudy

Wind

SSE 3 mph5 km/h

Humidity

55%

Cloud Cover

96%

As of Tuesday, September 8, 2026 at 2:56 PM EDT

Today's Outlook

Day

Overcast and warm, with a high of 75°F24°C. Light wind from the SSE around 5 mph7 km/h.

Night

Overcast, with a low around 64°F18°C. Breezy from the SSE at 7 to 8 mph12 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 75°F24°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 99%	Wind SSE 6 mph10 km/h	Tuesday: Overcast and warm, with a high of 75°F24°C. Light wind from the SSE around 5 mph7 km/h. Tuesday Night: Overcast, with a low around 64°F18°C. Breezy from the SSE at 7 to 8 mph12 to 12 km/h.
Rain	High 73°F23°C	Low 64°F18°C	Precip 0.37 in9.3 mm97%	Cloud 90%	Wind SW 9 mph14 km/h	Wednesday: Overcast and warm, with a high of 73°F23°C and morning low of 66°F19°C. Breezy from the SW at 9 to 12 mph15 to 19 km/h. 97% chance of rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 64°F18°C. Breezy from the SW at 9 to 11 mph14 to 18 km/h. 49% chance of light rain before dawn.
Partly Cloudy	High 69°F21°C	Low 53°F11°C	Precip 0 in0.1 mm9%	Cloud 56%	Wind WNW 9 mph15 km/h	Thursday: Overcast and warm, with a high of 69°F21°C and morning low of 61°F16°C. Breezy from the WNW at 11 to 12 mph18 to 20 km/h. Thursday Night: Partly cloudy, with a low around 53°F11°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h.
Clear	High 72°F22°C	Low 47°F8°CFeels 44°F7°C	Precip 0 in0 mm—	Cloud 9%	Wind WNW 5 mph8 km/h	Friday: Mostly clear and warm, with a high of 72°F22°C and morning low of 50°F10°C. Light wind from the WNW around 5 mph7 km/h. Dry air. Friday Night: Mostly clear, with a low around 47°F8°C. Light wind from the WSW around 5 mph8 km/h.
Drizzle	High 78°F25°C	Low 50°F10°C	Precip 0.02 in0.6 mm12%	Cloud 46%	Wind S 7 mph12 km/h	Saturday: Partly cloudy and warm, with a high of 78°F25°C and morning low of 53°F11°C. Breezy from the S at 8 to 9 mph12 to 14 km/h. Saturday Night: Partly cloudy, with a low around 50°F10°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 12% chance of drizzle in the evening.
Drizzle	High 72°F22°C	Low 56°F13°C	Precip 0.08 in2 mm24%	Cloud 48%	Wind WNW 8 mph13 km/h	Sunday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 62°F17°C. Breezy from the WNW at 9 to 11 mph14 to 18 km/h. 17% chance of drizzle throughout the day. Sunday Night: Partly cloudy, with a low around 56°F13°C. Breezy from the WNW at 8 mph13 km/h. 24% chance of drizzle overnight.
Partly Cloudy	High 67°F19°C	Low 51°F11°C	Precip 0.03 in0.8 mm7%	Cloud 51%	Wind NW 7 mph11 km/h	Monday: Mostly cloudy and mild, with a high of 67°F19°C and morning low of 52°F11°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h. Dry air. Monday Night: Partly cloudy, with a low around 51°F11°C. Breezy from the WNW at 7 mph11 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	75°F24°C	64°F18°C	0 in0 mm· —	99%	Cloudy	SSE 6 mph10 km/h
DayOvercast and warm, with a high of 75°F24°C. Light wind from the SSE around 5 mph7 km/h. NightOvercast, with a low around 64°F18°C. Breezy from the SSE at 7 to 8 mph12 to 12 km/h.
	WednesdaySep 9	73°F23°C	64°F18°C	0.37 in9.3 mm· 97%	90%	Rain	SW 9 mph14 km/h
DayOvercast and warm, with a high of 73°F23°C and morning low of 66°F19°C. Breezy from the SW at 9 to 12 mph15 to 19 km/h. 97% chance of rain throughout the day. Humid. NightOvercast, with a low around 64°F18°C. Breezy from the SW at 9 to 11 mph14 to 18 km/h. 49% chance of light rain before dawn.
	ThursdaySep 10	69°F21°C	53°F11°C	0 in0.1 mm· 9%	56%	Partly Cloudy	WNW 9 mph15 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 61°F16°C. Breezy from the WNW at 11 to 12 mph18 to 20 km/h. NightPartly cloudy, with a low around 53°F11°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h.
	FridaySep 11	72°F22°C	47°F8°C Feels 44°F7°C	0 in0 mm· —	9%	Clear	WNW 5 mph8 km/h
DayMostly clear and warm, with a high of 72°F22°C and morning low of 50°F10°C. Light wind from the WNW around 5 mph7 km/h. Dry air. NightMostly clear, with a low around 47°F8°C. Light wind from the WSW around 5 mph8 km/h.
	SaturdaySep 12	78°F25°C	50°F10°C	0.02 in0.6 mm· 12%	46%	Drizzle	S 7 mph12 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 53°F11°C. Breezy from the S at 8 to 9 mph12 to 14 km/h. NightPartly cloudy, with a low around 50°F10°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 12% chance of drizzle in the evening.
	SundaySep 13	72°F22°C	56°F13°C	0.08 in2 mm· 24%	48%	Drizzle	WNW 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 WNW at 9 to 11 mph14 to 18 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 56°F13°C. Breezy from the WNW at 8 mph13 km/h. 24% chance of drizzle overnight.
	MondaySep 14	67°F19°C	51°F11°C	0.03 in0.8 mm· 7%	51%	Partly Cloudy	NW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 52°F11°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h. Dry air. NightPartly cloudy, with a low around 51°F11°C. Breezy from the WNW at 7 mph11 km/h.
	TuesdaySep 15	74°F23°C	55°F13°C	0.18 in4.5 mm· 28%	70%	Showers	SSW 10 mph15 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 58°F15°C. Breezy from the SSW at 11 to 12 mph17 to 19 km/h. 26% chance of light rain throughout the day. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SSW at 9 mph14 km/h. 28% chance of showers throughout the night.
	WednesdaySep 16	72°F22°C	59°F15°C	0.1 in2.5 mm· 29%	63%	Showers	WNW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the W at 6 to 8 mph10 to 12 km/h. 29% chance of showers throughout the night.
	ThursdaySep 17	72°F22°C	56°F13°C	0.19 in4.8 mm· 28%	64%	Showers	SSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 58°F14°C. Breezy from the S at 7 mph11 km/h. 28% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h. 22% chance of showers throughout the night.
	FridaySep 18	70°F21°C	58°F14°C	0.2 in5.1 mm· 30%	64%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 60°F16°C. Breezy from the W at 9 mph14 km/h. 25% chance of showers throughout the day. NightMostly cloudy, with a low around 58°F14°C. Breezy from the W at 8 mph12 km/h. 30% chance of showers throughout the night.
	SaturdaySep 19	66°F19°C	54°F12°C	0.15 in3.9 mm· 21%	63%	Showers	W 8 mph12 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 54°F12°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 21% chance of drizzle throughout the day. NightMostly cloudy, with a low around 54°F12°C. Breezy from the W at 7 mph12 km/h. 17% chance of showers throughout the night.
	SundaySep 20	63°F17°C	51°F10°C	0.16 in4.1 mm· 22%	64%	Showers	WNW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 51°F11°C. Breezy from the WNW at 8 to 9 mph14 to 15 km/h. 20% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 51°F10°C. Breezy from the WNW at 7 mph12 km/h. 22% chance of showers throughout the night.
	MondaySep 21	61°F16°C	48°F9°C Feels 45°F7°C	0.09 in2.2 mm· 17%	60%	Drizzle	NW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 61°F16°C and morning low of 48°F9°C. Breezy from the NW at 8 mph12 km/h. 17% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 48°F9°C. Light wind from the WNW around 6 mph10 km/h. 15% chance of drizzle throughout the night.
	TuesdaySep 22	62°F17°C	46°F8°C Feels 43°F6°C	0.07 in1.7 mm· 15%	61%	Drizzle	SW 7 mph11 km/h
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 47°F8°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. 15% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 46°F8°C. Light wind from the SSW around 6 mph10 km/h. 15% chance of drizzle throughout the night.

Nearby Cities

Innisfil15 mi24 km Bolton20 mi32 km Orangeville20 mi32 km Barrie20 mi32 km Caledon21 mi33 km Keswick21 mi34 km

About This Forecast

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Coordinates: 44.1501°N, 79.8663°W·Elevation: 223m·Timezone: America/Toronto·Population: 18,809