Current Conditions

Alliston, Ontario

69°F21°C

Rain

Wind

SW 3 mph4 km/h

Humidity

84%

Cloud Cover

22%

As of Wednesday, August 12, 2026 at 7:05 PM EDT

Today's Outlook

Night

Mostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h. 83% chance of rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 76°F24°C	Low 63°F17°C	Precip 0.38 in9.6 mm96%	Cloud 40%	Wind W 4 mph6 km/h	Wednesday: Mostly cloudy and warm, with a high of 76°F24°C. Light wind from the W around 4 mph6 km/h. 96% chance of rain throughout the day. Wednesday Night: Mostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h. 83% chance of rain throughout the night.
Partly Cloudy	High 79°F26°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 41%	Wind NW 7 mph11 km/h	Thursday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 63°F17°C. Breezy from the NW at 8 to 10 mph13 to 16 km/h. Thursday Night: Mostly clear, with a low around 59°F15°C. Light wind from the NW around 6 mph9 km/h.
Clear	High 80°F27°C	Low 58°F14°C	Precip 0 in0.1 mm3%	Cloud 30%	Wind NW 6 mph9 km/h	Friday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Breezy from the NNW at 6 to 7 mph9 to 12 km/h. Friday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the NW around 5 mph8 km/h.
Clear	High 79°F26°C	Low 57°F14°C	Precip 0.01 in0.2 mm6%	Cloud 37%	Wind ESE 5 mph8 km/h	Saturday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 61°F16°C. Light wind from the ESE around 5 mph7 km/h. Saturday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the E around 5 mph9 km/h.
Light Rain	High 75°F24°C	Low 63°F17°C	Precip 0.28 in7.1 mm67%	Cloud 81%	Wind SSE 7 mph11 km/h	Sunday: Overcast and warm, with a high of 75°F24°C and morning low of 65°F18°C. Breezy from the S at 7 mph11 km/h. 67% chance of light rain throughout the day. Sunday Night: Mostly cloudy, with a low around 63°F17°C. Light wind from the SSE around 6 mph10 km/h. 40% chance of light rain throughout the night.
Drizzle	High 74°F23°C	Low 61°F16°C	Precip 0.04 in1.1 mm23%	Cloud 67%	Wind NNW 7 mph12 km/h	Monday: Mostly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the NNW at 8 to 9 mph13 to 14 km/h. 23% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle overnight.
Partly Cloudy	High 79°F26°C	Low 56°F14°C	Precip 0.01 in0.2 mm6%	Cloud 49%	Wind WNW 4 mph7 km/h	Tuesday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 61°F16°C. Light wind from the WNW around 4 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 56°F14°C. Light wind from the WNW around 4 mph7 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdayAug 12	76°F24°C	63°F17°C	0.38 in9.6 mm· 96%	40%	Rain	W 4 mph6 km/h
DayMostly cloudy and warm, with a high of 76°F24°C. Light wind from the W around 4 mph6 km/h. 96% chance of rain throughout the day. NightMostly clear, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h. 83% chance of rain throughout the night.
	ThursdayAug 13	79°F26°C	59°F15°C	0 in0 mm· —	41%	Partly Cloudy	NW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 63°F17°C. Breezy from the NW at 8 to 10 mph13 to 16 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the NW around 6 mph9 km/h.
	FridayAug 14	80°F27°C	58°F14°C	0 in0.1 mm· 3%	30%	Clear	NW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Breezy from the NNW at 6 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the NW around 5 mph8 km/h.
	SaturdayAug 15	79°F26°C	57°F14°C	0.01 in0.2 mm· 6%	37%	Clear	ESE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 61°F16°C. Light wind from the ESE around 5 mph7 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the E around 5 mph9 km/h.
	SundayAug 16	75°F24°C	63°F17°C	0.28 in7.1 mm· 67%	81%	Light Rain	SSE 7 mph11 km/h
DayOvercast and warm, with a high of 75°F24°C and morning low of 65°F18°C. Breezy from the S at 7 mph11 km/h. 67% chance of light rain throughout the day. NightMostly cloudy, with a low around 63°F17°C. Light wind from the SSE around 6 mph10 km/h. 40% chance of light rain throughout the night.
	MondayAug 17	74°F23°C	61°F16°C	0.04 in1.1 mm· 23%	67%	Drizzle	NNW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the NNW at 8 to 9 mph13 to 14 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h. 13% chance of drizzle overnight.
	TuesdayAug 18	79°F26°C	56°F14°C	0.01 in0.2 mm· 6%	49%	Partly Cloudy	WNW 4 mph7 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 61°F16°C. Light wind from the WNW around 4 mph7 km/h. NightPartly cloudy, with a low around 56°F14°C. Light wind from the WNW around 4 mph7 km/h.
	WednesdayAug 19	78°F25°C	60°F15°C	0.18 in4.5 mm· 44%	71%	Light Rain	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the SW at 7 to 9 mph12 to 14 km/h. 44% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F15°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 40% chance of showers throughout the night.
	ThursdayAug 20	75°F24°C	63°F17°C	0.17 in4.2 mm· 38%	63%	Showers	WNW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the WNW at 8 to 9 mph13 to 15 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the W at 7 mph11 km/h. 38% chance of showers throughout the night.
	FridayAug 21	76°F24°C	59°F15°C	0.08 in2 mm· 16%	47%	Drizzle	WNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 62°F17°C. Breezy from the WNW at 8 to 9 mph12 to 14 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 59°F15°C. Light wind from the WNW around 6 mph10 km/h. 13% chance of drizzle throughout the night.
	SaturdayAug 22	75°F24°C	58°F14°C	0.07 in1.9 mm· 18%	45%	Drizzle	WNW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 61°F16°C. Breezy from the WNW at 7 to 8 mph11 to 13 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 58°F14°C. Light wind from the WNW around 6 mph10 km/h. 11% chance of drizzle throughout the night.
	SundayAug 23	74°F23°C	58°F14°C	0.07 in1.9 mm· 21%	47%	Drizzle	WNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 60°F16°C. Breezy from the NW at 7 to 8 mph12 to 13 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 58°F14°C. Light wind from the WNW around 6 mph10 km/h. 15% chance of drizzle throughout the night.
	MondayAug 24	74°F23°C	56°F13°C	0.09 in2.2 mm· 23%	49%	Showers	WNW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 8 mph11 to 13 km/h. 23% chance of showers throughout the day. NightPartly cloudy, with a low around 56°F13°C. Light wind from the WNW around 6 mph9 km/h. 14% chance of drizzle throughout the night.
	TuesdayAug 25	74°F23°C	57°F14°C	0.1 in2.5 mm· 21%	53%	Drizzle	WNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 57°F14°C. Light wind from the WNW around 6 mph10 km/h. 17% chance of drizzle throughout the night.
	WednesdayAug 26	73°F23°C	57°F14°C	0.07 in1.7 mm· 17%	44%	Showers	NW 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 NW at 7 to 8 mph12 to 13 km/h. 17% chance of showers throughout the day. NightPartly cloudy, with a low around 57°F14°C. Light wind from the NW around 6 mph10 km/h. 12% 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