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Canada › Ontario › Alliston

Alliston, ON Weather

Current weather

8:00 AM
15°C
Partly Cloudy
High 21° · Low 13° · 40%
Wind
SE 11 km/h
Wind gusts
28 km/h
Humidity
84%
Air quality (AQHI)
1.6 · Low risk
UV index
0 · Low
More details
Dew point
13°C
Pressure
101.4 kPa ↘ falling
Visibility
10 km
Sunrise
7:00 AM
Sunset
5:05 PM
Daylight
10 h 5 min
Observed at Egbert, 8:00 AM EST · Environment and Climate Change Canada

Hourly forecast

Hourly →
  • Now15°25%
  • 9 AM16°20%
  • 10 AM18°20%
  • 11 AM19°20%
  • 12 PM20°20%
  • 1 PM21°20%
  • 2 PM20°20%
  • 3 PM20°40%
  • 4 PM19°40%
  • 5 PM18°40%
  • 6 PM17°80%
  • 7 PM16°80%
  • 8 PM16°80%
  • 9 PM16°80%
  • 10 PM16°80%
  • 11 PM16°80%
  • Thu
  • 12 AM15°80%
  • 1 AM15°80%
  • 2 AM15°80%
  • 3 AM15°80%
  • 4 AM15°80%
  • 5 AM14°80%
  • 6 AM14°40%
  • 7 AM13°40%

14-day forecast

Full 14-day →
TodayNov 421°13°Chance of showersShowers40%

Day

A mix of sun and cloud. Becoming cloudy this afternoon with 40 percent chance of showers late this afternoon. Wind becoming south 20 km/h gusting to 40 this morning. High 21. Humidex 25. UV index 3 or moderate.

Humidex
25
Wind
S 20 km/h
Wind gusts
40 km/h
Precipitation
40% · 3 mm
UV index (max)
3 Moderate
Air quality (AQHI)
3 · Low risk

Night

Showers. Amount 10 to 15 mm. Wind south 20 km/h gusting to 40. Low 13.

Low
13°
Wind
S 20 km/h
Sunrise7:00 AM
Sunset5:05 PM
Daylight10 h 5 min
Normal8° / 0°
ThuNov 514°8°Chance of showersCloudy periods40%

Day

Cloudy with 40 percent chance of showers. Wind southwest 20 km/h gusting to 40. High 14. UV index 2 or low.

Wind
SW 20 km/h
Wind gusts
40 km/h
Precipitation
40% · 2 mm
UV index (max)
2 Low
Air quality (AQHI)
2 · Low risk

Night

Cloudy periods. Low 8.

Low
8°
Sunrise7:00 AM
Sunset5:05 PM
Daylight10 h 5 min
FriNov 614°9°Chance of showersChance of showers40%

Day

Cloudy with 40 percent chance of showers. High 14.

Precipitation
40% · 3 mm
UV index (max)
2 Low

Night

Cloudy with 40 percent chance of showers. Low 9.

Low
9°
Precipitation
40%
Sunrise7:01 AM
Sunset5:04 PM
Daylight10 h 2 min
SatNov 712°2°Chance of showersCloudy periods40%

Day

Cloudy with 40 percent chance of showers. High 12.

Precipitation
40% · 4 mm
UV index (max)
1 Low

Night

Cloudy periods. Low plus 2.

Low
2°
Sunrise7:03 AM
Sunset5:03 PM
Daylight10 h 0 min
SunNov 87°3°CloudyCloudy17%

Day

Cloudy. High 7.

Precipitation
17% · 0.1 mm
UV index (max)
3 Moderate

Night

Cloudy. Low plus 3.

Low
3°
Sunrise7:04 AM
Sunset5:02 PM
Daylight9 h 57 min
MonNov 98°4°CloudyCloudy21%

Day

Cloudy. High 8.

Precipitation
21% · 0.1 mm
UV index (max)
4 Moderate

Night

Cloudy. Low plus 4.

Low
4°
Sunrise7:05 AM
Sunset5:00 PM
Daylight9 h 55 min
TueNov 107°6°Chance of showers30%

Day

Cloudy with 30 percent chance of showers. High 7.

Precipitation
30% · 1 mm
UV index (max)
3 Moderate

Night

Low 6.

Low
6°
Sunrise7:06 AM
Sunset4:59 PM
Daylight9 h 52 min
Days 8–14 · trend, lower confidence
WedNov 117°3°Partly cloudyNight low 3°40%

Day

Partly cloudy. High 7.

Wind
NW 11 km/h
Wind gusts
38 km/h
Precipitation
40% · 0.5 mm
UV index (max)
3 Moderate

Night

Low 3.

Low
3°
Sunrise7:08 AM
Sunset4:58 PM
Daylight9 h 50 min
SourceExtended outlook
ThuNov 1212°3°Mostly cloudyNight low 3°26%

Day

Mostly cloudy. High 12.

Wind
W 21 km/h
Wind gusts
40 km/h
Precipitation
26% · 0.1 mm
UV index (max)
3 Moderate

Night

Low 3.

Low
3°
Sunrise7:09 AM
Sunset4:57 PM
Daylight9 h 47 min
SourceExtended outlook
FriNov 1311°5°ShowersNight low 5°58%

Day

Showers. High 11.

Wind
W 13 km/h
Wind gusts
31 km/h
Precipitation
58% · 0.8 mm
UV index (max)
3 Moderate

Night

Low 5.

Low
5°
Sunrise7:10 AM
Sunset4:56 PM
Daylight9 h 45 min
SourceExtended outlook
SatNov 1411°4°Partly cloudyNight low 4°16%

Day

Partly cloudy. High 11.

Wind
SE 8 km/h
Wind gusts
28 km/h
Precipitation
16% · 0 mm
UV index (max)
4 Moderate

Night

Low 4.

Low
4°
Sunrise7:12 AM
Sunset4:55 PM
Daylight9 h 43 min
SourceExtended outlook
SunNov 1512°5°ShowersNight low 5°58%

Day

Showers. High 12.

Wind
SE 13 km/h
Wind gusts
40 km/h
Precipitation
58% · 0.9 mm
UV index (max)
3 Moderate

Night

Low 5.

Low
5°
Sunrise7:13 AM
Sunset4:54 PM
Daylight9 h 41 min
SourceExtended outlook
MonNov 169°5°ShowersNight low 5°87%

Day

Showers. High 9.

Wind
SE 14 km/h
Wind gusts
44 km/h
Precipitation
87% · 6 mm
UV index (max)
2 Low

Night

Low 5.

Low
5°
Sunrise7:14 AM
Sunset4:53 PM
Daylight9 h 38 min
SourceExtended outlook
TueNov 177°2°ShowersNight low 2°42%

Day

Showers. High 7.

Wind
NW 14 km/h
Wind gusts
27 km/h
Precipitation
42% · 0.3 mm
UV index (max)
2 Low

Night

Low 2.

Low
2°
Sunrise7:16 AM
Sunset4:52 PM
Daylight9 h 36 min
SourceExtended outlook
Sunrise7:00 AM
Sunset5:05 PM
Daylight10 h 5 min
MoonWaning Crescent22% lit · rise 1:57 AM · set 2:50 PM

Pollen today · Alliston

TreesNonenone in the air
GrassLow<1 grains/m³
WeedsLow<1 grains/m³ · Ragweed
Thu: weeds low · Fri: weeds low · Sat: weeds low
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.

Climate · monthly normals

Full climate →
MonthJanFebMarAprMayJunJulAugSepOctNovDec
High-3°-1°4°12°19°24°27°26°22°14°7°1°
Low-11°-10°-6°1°7°12°15°14°10°4°-1°-6°
Precip54 mm49 mm54 mm64 mm78 mm81 mm78 mm82 mm80 mm71 mm82 mm61 mm
ECCC

Activities today

Derived from the forecast
Laundry dayPoorLine-drying weather
GrillingGreatFire up the grill
RunningFairLace up outside
PatioFairDinner outdoors
Forecast: Environment and Climate Change Canada (Innisfil - New Tecumseth - Angus), issued 5:00 AM · Days 8–14: WeatherAPI.com · weather.gc.ca · 44.1501°N, 79.8663°W · Elevation 223 m · Population 18,809 · Time zone America/Toronto