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Weather in Alliston

Ontario, 223 m · continuously updated

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Wind
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Humidity
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Rain ahead
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Sunset
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Temperature · last 4 and next 28 hours

Alliston weather: the next 24 hours

Updated hourly.

Alliston 14-day forecast

Two-week trend.

Rain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Alliston

Neighbouring towns, as the crow flies.

7-day forecast for Alliston

Today (Thursday 15 Oct) in Alliston: overcast, 8 to 11 °C, precipitation 0.0 mm (45 %), wind up to 16 km/h. Tomorrow: rain, 3 to 13 °C.

DayWeatherMinMaxPrecip.Wind
Todayovercast8 °C11 °C0.0 mm16 km/h
Tomorrowrain3 °C13 °C11.6 mm29 km/h
Sat 17 Octovercast0 °C8 °C0.0 mm24 km/h
Sun 18 Octovercast4 °C15 °C0.0 mm29 km/h
Mon 19 Octovercast8 °C18 °C0.0 mm25 km/h
Tue 20 Octovercast7 °C17 °C0.0 mm18 km/h
Wed 21 Octsunny4 °C13 °C0.0 mm10 km/h

Forecast updated on 15.10.2026 at 11:44 (Open-Meteo model, elevation 223 m). The live block at the top of the page is refreshed hourly and covers 14 days.

Tomorrow's weather in Alliston

Tomorrow, Friday 16 Oct, in Alliston: rain, from 3 to 13 °C, 11.6 mm of precipitation (probability 81 %), wind up to 29 km/h.

HourWeatherTemp.Precip.ChanceWind
00:00light drizzle9 °C0.4 mm79 %8 km/h
03:00rain10 °C2.5 mm78 %6 km/h
06:00overcast10 °C0.0 mm43 %3 km/h
09:00overcast11 °C0.0 mm17 %7 km/h
12:00overcast9 °C0.0 mm7 %23 km/h
15:00overcast8 °C0.0 mm5 %28 km/h
18:00overcast6 °C0.0 mm4 %28 km/h
21:00sunny4 °C0.0 mm3 %24 km/h

Frequently asked questions

Will it rain tomorrow in Alliston?

Yes: 11.6 mm expected, probability 81 %.

How warm will it be tomorrow in Alliston?

Between 3 and 13 °C.

The weekend

This weekend in Alliston: Saturday overcast, 0 to 8 °C, Sunday overcast, 4 to 15 °C.

DayWeatherMinMaxPrecip.Wind
Sat 17 Octovercast0 °C8 °C0.0 mm24 km/h
Sun 18 Octovercast4 °C15 °C0.0 mm29 km/h

Hour by hour

The next 48 hours in Alliston, hour by hour: temperature from 0 to 13 °C, 11.6 mm of rain expected.

HourWeatherTemp.Precip.ChanceWind
11:00overcast9 °C0.0 mm0 %10 km/h
12:00overcast9 °C0.0 mm0 %11 km/h
13:00overcast10 °C0.0 mm0 %12 km/h
14:00overcast10 °C0.0 mm0 %13 km/h
15:00overcast11 °C0.0 mm0 %16 km/h
16:00overcast11 °C0.0 mm0 %16 km/h
17:00overcast10 °C0.0 mm0 %15 km/h
18:00overcast10 °C0.0 mm1 %15 km/h
19:00overcast9 °C0.0 mm7 %15 km/h
20:00overcast9 °C0.0 mm8 %16 km/h
21:00overcast8 °C0.0 mm10 %16 km/h
22:00overcast8 °C0.0 mm14 %11 km/h
23:00overcast8 °C0.0 mm45 %11 km/h
00:00light drizzle9 °C0.4 mm79 %8 km/h
01:00light rain9 °C2.2 mm81 %16 km/h
02:00light rain9 °C1.8 mm73 %16 km/h
03:00rain10 °C2.5 mm78 %6 km/h
04:00rain10 °C2.5 mm73 %6 km/h
05:00drizzle10 °C0.7 mm73 %6 km/h
06:00overcast10 °C0.0 mm43 %3 km/h
07:00overcast10 °C0.0 mm29 %4 km/h
08:00drizzle10 °C0.7 mm19 %4 km/h
09:00overcast11 °C0.0 mm17 %7 km/h
10:00light drizzle13 °C0.4 mm7 %12 km/h
11:00light drizzle10 °C0.4 mm10 %24 km/h
12:00overcast9 °C0.0 mm7 %23 km/h
13:00overcast9 °C0.0 mm9 %25 km/h
14:00overcast8 °C0.0 mm4 %27 km/h
15:00overcast8 °C0.0 mm5 %28 km/h
16:00overcast7 °C0.0 mm4 %28 km/h
17:00partly cloudy7 °C0.0 mm3 %29 km/h
18:00overcast6 °C0.0 mm4 %28 km/h
19:00overcast5 °C0.0 mm5 %23 km/h
20:00partly cloudy5 °C0.0 mm4 %18 km/h
21:00sunny4 °C0.0 mm3 %24 km/h
22:00mostly sunny4 °C0.0 mm3 %24 km/h
23:00overcast3 °C0.0 mm17 %27 km/h
00:00partly cloudy2 °C0.0 mm17 %24 km/h
01:00mostly sunny2 °C0.0 mm17 %19 km/h
02:00overcast1 °C0.0 mm17 %23 km/h
03:00overcast1 °C0.0 mm9 %21 km/h
04:00overcast1 °C0.0 mm9 %19 km/h
05:00overcast1 °C0.0 mm9 %14 km/h
06:00overcast1 °C0.0 mm9 %22 km/h
07:00overcast0 °C0.0 mm9 %19 km/h
08:00overcast0 °C0.0 mm9 %17 km/h
09:00sunny1 °C0.0 mm0 %18 km/h
10:00sunny2 °C0.0 mm0 %18 km/h

Location of Alliston

Alliston lies at 223 m, 19 m above the average of the 187 places we cover in Ontario (204 m). That makes it the 74th highest of the 187. The main town, Toronto, lies 62 km to the south-east. The nearest places we cover are Tottenham (15 km to the south), Angus (19 km to the north), Innisfil (24 km to the north-east) and Shelburne (28 km to the west). With about 18,809 inhabitants according to GeoNames, Alliston is the 90th largest of the 187 places we cover in Ontario. Of the places of interest on this site, the nearest are Blue Mountain (ski resort, 48 km to the north-west) and Lake Simcoe (lake, 50 km to the north-east).