weathermetro
Cities / Canada
/ Ontario
☀️ Alliston weather
Clear sky. .
Feels like 17° Wind 6 km/h NW Humidity 89% Pressure 1010 hPa UV 0 Air Good ☀ 06:21 - 20:27
Right now it is 16° in Alliston with clear skies and today's high is 24° with an overnight low of 15° . The sun rises at 06:21 and sets at 20:27, giving 14h 06m of daylight. Over the coming week highs range from 22° to 26° .
Alliston is in Ontario, Canada, sitting 223 m above sea level, with a population of about 19,000. Local time is America/Toronto (UTC−4), and every time on this page is shown in it.
Next 24 hours - temperature
14°
20°
25°
24°
15°
02:00 · 16.6° · 0 mm
03:00 · 15.9° · 0 mm
04:00 · 15.5° · 0 mm
05:00 · 15° · 0 mm
06:00 · 14.6° · 0 mm
07:00 · 14.5° · 0 mm
08:00 · 16.4° · 0 mm
09:00 · 19.3° · 0 mm
10:00 · 20.9° · 0 mm
11:00 · 21.9° · 0 mm
12:00 · 23° · 0 mm
13:00 · 23.7° · 0 mm
14:00 · 24° · 0 mm
15:00 · 24.2° · 0 mm
16:00 · 24° · 0 mm
17:00 · 23.5° · 0 mm
18:00 · 22.9° · 0 mm
19:00 · 22.1° · 0 mm
20:00 · 21.8° · 0 mm
21:00 · 20.4° · 0 mm
22:00 · 19.4° · 0 mm
23:00 · 18.6° · 0 mm
00:00 · 17.9° · 0 mm
01:00 · 17.2° · 0 mm
Precipitation
02:00 · 0 mm
02:00
03:00 · 0 mm
04:00 · 0 mm
05:00 · 0 mm
05:00
06:00 · 0 mm
07:00 · 0 mm
08:00 · 0 mm
08:00
09:00 · 0 mm
10:00 · 0 mm
11:00 · 0 mm
11:00
12:00 · 0 mm
13:00 · 0 mm
14:00 · 0 mm
14:00
15:00 · 0 mm
16:00 · 0 mm
17:00 · 0 mm
17:00
18:00 · 0 mm
19:00 · 0 mm
20:00 · 0 mm
20:00
21:00 · 0 mm
22:00 · 0 mm
23:00 · 0 mm
23:00
00:00 · 0 mm
01:00 · 0 mm
Hour by hour
TIME TEMP FEELS RAIN CONDITIONS
02:00
☀️
16.6°
17.1°
-
Clear sky
03:00
☀️
15.9°
16°
-
Clear sky
04:00
☀️
15.5°
15.4°
-
Clear sky
05:00
☀️
15°
14.9°
-
Clear sky
06:00
☀️
14.6°
14.3°
-
Clear sky
07:00
☁️
14.5°
14.6°
-
Overcast
08:00
☁️
16.4°
17.8°
-
Overcast
09:00
☁️
19.3°
19.7°
-
Overcast
10:00
☁️
20.9°
20.6°
-
Overcast
11:00
☁️
21.9°
21.5°
-
Overcast
12:00
☁️
23°
22.5°
-
Overcast
13:00
☁️
23.7°
22.4°
-
Overcast
☁️
TodayAugust 13th
Avg 20° Low 15° at 07:00
High 24° at 15:00
Wind ~18 km/h
Clear
Cloudy
00:00
17°
02:00
17°
04:00
16°
06:00
15°
08:00
16°
10:00
21°
12:00
23°
14:00
24°
16:00
24°
18:00
23°
20:00
22°
22:00
19°
☁️
FridayAugust 14th
Avg 20° Low 15° at 23:00
High 25° at 15:00
Wind ~15 km/h
Cloudy
Clear
00:00
18°
02:00
17°
04:00
16°
06:00
16°
08:00
17°
10:00
21°
12:00
24°
14:00
25°
16:00
25°
18:00
24°
20:00
19°
22:00
16°
☁️
SaturdayAugust 15th
Avg 18° Low 12° at 06:00
High 24° at 15:00
Feels 22° Wind ~15 km/h
Clear
Cloudy
00:00
15°
02:00
14°
04:00
13°
06:00
12°
08:00
15°
10:00
19°
12:00
22°
14:00
24°
16:00
24°
18:00
20°
20:00
18°
22:00
18°
🌦️
SundayAugust 16th
Avg 19° Low 14° at 03:00
High 23° at 17:00
0.7 mm rain Wind ~15 km/h
Cloudy
Cloudy
Rain
Cloudy
00:00
17°
02:00
15°
04:00
14°
06:00
15°
08:00
18°
10:00
19°
12:00
22°
0.1mm
14:00
19°
0.2mm
16:00
20°
18:00
23°
20:00
21°
22:00
18°
☀️
MondayAugust 17th
Avg 18° Low 13° at 23:00
High 22° at 15:00
Feels 19° Wind ~22 km/h
Clear
Clear
00:00
19°
02:00
18°
04:00
17°
06:00
15°
08:00
17°
10:00
20°
12:00
21°
14:00
22°
16:00
22°
18:00
21°
20:00
16°
22:00
14°
⛅
TuesdayAugust 18th
Avg 19° Low 13° at 04:00
High 26° at 16:00
Feels 24° Wind ~13 km/h
Clear
Partly Cloudy
Cloudy
Partly Cloudy
Cloudy
00:00
13°
02:00
13°
04:00
13°
06:00
13°
08:00
16°
10:00
20°
12:00
23°
14:00
25°
16:00
26°
18:00
24°
20:00
20°
22:00
18°
🌧️
WednesdayAugust 19th
Avg 20° Low 14° at 23:00
High 25° at 14:00
3.9 mm rain Feels 22° Wind ~26 km/h
Cloudy
Rain
Clear
Cloudy
00:00
18°
02:00
20°
04:00
20°
06:00
19°
1.2mm
08:00
18°
1.2mm
10:00
19°
0.1mm
12:00
22°
14:00
25°
16:00
24°
18:00
21°
20:00
17°
22:00
15°
☀️
ThursdayAugust 20th
Avg 18° Low 12° at 04:00
High 27° at 16:00
Feels 25° Wind ~12 km/h
Clear
00:00
14°
02:00
12°
04:00
12°
06:00
13°
08:00
16°
10:00
20°
12:00
24°
14:00
26°
16:00
27°
18:00
24°
20:00
18°
22:00
16°
☁️
FridayAugust 21st
Avg 21° Low 15° at 04:00
High 29° at 16:00
Feels 27° Wind ~14 km/h
Partly Cloudy
Cloudy
Cloudy
00:00
15°
02:00
15°
04:00
15°
06:00
15°
08:00
17°
10:00
22°
12:00
26°
14:00
28°
16:00
29°
18:00
27°
20:00
22°
22:00
21°
⛅
SaturdayAugust 22nd
Avg 21° Low 17° at 21:00
High 26° at 12:00
0.3 mm rain Wind ~29 km/h
Cloudy
Partly Cloudy
Clear
Rain
Clear
00:00
20°
02:00
21°
04:00
19°
06:00
19°
08:00
20°
10:00
24°
12:00
26°
0.1mm
14:00
26°
0.1mm
16:00
24°
18:00
20°
20:00
17°
22:00
17°
☀️
SundayAugust 23rd
Avg 14° Low 8° at 05:00
High 20° at 15:00
Feels 15° Wind ~24 km/h
Clear
Partly Cloudy
Clear
00:00
15°
02:00
11°
04:00
9°
06:00
9°
08:00
11°
10:00
15°
12:00
19°
14:00
20°
16:00
20°
18:00
18°
20:00
14°
22:00
12°
🌦️
MondayAugust 24th
Avg 18° Low 10° at 04:00
High 26° at 16:00
0.9 mm rain Feels 21° Wind ~30 km/h
Clear
Partly Cloudy
Clear
Rain
00:00
11°
02:00
10°
04:00
10°
06:00
10°
08:00
13°
10:00
19°
12:00
23°
14:00
25°
16:00
26°
18:00
25°
20:00
21°
22:00
19°
0.3mm
🌧️
TuesdayAugust 25th
Avg 20° Low 13° at 23:00
High 26° at 14:00
5.1 mm rain Feels 21° Wind ~32 km/h
Rain
Cloudy
Clear
00:00
18°
1.6mm
02:00
18°
1.6mm
04:00
19°
0.1mm
06:00
20°
08:00
21°
10:00
23°
12:00
25°
14:00
26°
16:00
22°
18:00
18°
20:00
16°
22:00
14°
☀️
WednesdayAugust 26th
Avg 15° Low 9° at 04:00
High 22° at 16:00
Feels 20° Wind ~15 km/h
Clear
Partly Cloudy
Clear
00:00
12°
02:00
10°
04:00
9°
06:00
9°
08:00
11°
10:00
16°
12:00
19°
14:00
21°
16:00
22°
18:00
20°
20:00
15°
22:00
12°
☀️
ThursdayAugust 27th
Avg 17° Low 10° at 04:00
High 25° at 16:00
Feels 22° Wind ~10 km/h
Clear
00:00
11°
02:00
10°
04:00
10°
06:00
11°
08:00
13°
10:00
19°
12:00
22°
14:00
24°
16:00
25°
18:00
22°
20:00
17°
22:00
15°
⛅
FridayAugust 28th
Avg 19° Low 0° at 04:00
High 0° at 16:00
Feels 26° Wind ~12 km/h
Clear
Partly Cloudy
Cloudy
Partly Cloudy
Unknown
00:00
13°
02:00
13°
04:00
12°
06:00
13°
08:00
15°
10:00
20°
12:00
24°
14:00
26°
16:00
28°
18:00
26°
20:00
20°
22:00
0°
Sun
☀️ Sunrise 06:21 · Sunset 20:27
14h 06m of daylight · America/Toronto
Air quality
PM2.5 4.4 µg/m³ - Good
No reason to change your plans - open the windows.
Source: Copernicus CAMS, updated hourly.
Common questions about Alliston weather
Will it rain in Alliston today?
No rain is in the forecast for Alliston today.
What is the temperature in Alliston right now?
It is 16° in Alliston right now. Today runs between a low of 15° and a high of 24° .
What time is sunrise and sunset in Alliston?
The sun rises at 06:21 and sets at 20:27 local time in Alliston today, giving 14h 06m of daylight.
What is the air quality in Alliston?
PM2.5 in Alliston is currently 4.4 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.
How accurate is the Alliston forecast, and how far ahead does it go?
This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Alliston best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.
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© 2026 WeatherMetro · Weather data: ECMWF, NOAA, DWD, Météo-France, ECCC, MeteoSwiss and others (CC-BY 4.0) · Air quality & history: Copernicus CAMS / C3S · Location data: GeoNames (CC-BY) · Alerts: NWS, MeteoAlarm, ECCC