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Canada › Ontario › Alliston

Alliston, ON Weather

Current weather

9:00 AM
61°F
Partly Cloudy
High 70° · Low 55° · 40%
Wind
S 7 mph
Wind gusts
17 mph
Humidity
80%
Air quality (AQHI)
1.7 · Low risk
UV index
0 · Low
More details
Dew point
55°F
Pressure
29.94 inHg ↘ falling
Visibility
6 mi
Sunrise
7:00 AM
Sunset
5:05 PM
Daylight
10 h 5 min
Observed at Egbert, 9:00 AM EST · Environment and Climate Change Canada

Hourly forecast

Hourly →
  • Now62°19%
  • 10 AM64°20%
  • 11 AM66°20%
  • 12 PM68°20%
  • 1 PM70°20%
  • 2 PM68°20%
  • 3 PM68°40%
  • 4 PM66°40%
  • 5 PM64°40%
  • 6 PM63°80%
  • 7 PM61°80%
  • 8 PM61°80%
  • 9 PM61°80%
  • 10 PM61°80%
  • 11 PM61°80%
  • Thu
  • 12 AM59°80%
  • 1 AM59°80%
  • 2 AM59°80%
  • 3 AM59°80%
  • 4 AM59°80%
  • 5 AM57°80%
  • 6 AM57°40%
  • 7 AM55°40%
  • 8 AM55°40%

14-day forecast

Full 14-day →
TodayNov 470°55°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
77
Wind
S 12 mph
Wind gusts
25 mph
Precipitation
40% · 0.12 in
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
55°
Wind
S 12 mph
Sunrise7:00 AM
Sunset5:05 PM
Daylight10 h 5 min
Normal46° / 32°
ThuNov 557°46°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 12 mph
Wind gusts
25 mph
Precipitation
40% · 0.07 in
UV index (max)
2 Low
Air quality (AQHI)
2 · Low risk

Night

Cloudy periods. Low 8.

Low
46°
Sunrise7:00 AM
Sunset5:05 PM
Daylight10 h 5 min
FriNov 657°48°Chance of showersChance of showers40%

Day

Cloudy with 40 percent chance of showers. High 14.

Precipitation
40% · 0.10 in
UV index (max)
2 Low

Night

Cloudy with 40 percent chance of showers. Low 9.

Low
48°
Precipitation
40%
Sunrise7:01 AM
Sunset5:04 PM
Daylight10 h 2 min
SatNov 754°36°Chance of showersCloudy periods40%

Day

Cloudy with 40 percent chance of showers. High 12.

Precipitation
40% · 0.14 in
UV index (max)
1 Low

Night

Cloudy periods. Low plus 2.

Low
36°
Sunrise7:03 AM
Sunset5:03 PM
Daylight10 h 0 min
SunNov 845°37°CloudyCloudy17%

Day

Cloudy. High 7.

Precipitation
17% · 0 in
UV index (max)
3 Moderate

Night

Cloudy. Low plus 3.

Low
37°
Sunrise7:04 AM
Sunset5:02 PM
Daylight9 h 57 min
MonNov 946°39°CloudyCloudy21%

Day

Cloudy. High 8.

Precipitation
21% · 0 in
UV index (max)
4 Moderate

Night

Cloudy. Low plus 4.

Low
39°
Sunrise7:05 AM
Sunset5:00 PM
Daylight9 h 55 min
TueNov 1045°42°Chance of showers30%

Day

Cloudy with 30 percent chance of showers. High 7.

Precipitation
30% · 0.04 in
UV index (max)
3 Moderate

Night

Low 42.

Low
42°
Sunrise7:06 AM
Sunset4:59 PM
Daylight9 h 52 min
Days 8–14 · trend, lower confidence
WedNov 1145°37°Partly cloudyNight low 37°40%

Day

Partly cloudy. High 45.

Wind
NW 7 mph
Wind gusts
23 mph
Precipitation
40% · 0.02 in
UV index (max)
3 Moderate

Night

Low 37.

Low
37°
Sunrise7:08 AM
Sunset4:58 PM
Daylight9 h 50 min
SourceExtended outlook
ThuNov 1254°37°Mostly cloudyNight low 37°26%

Day

Mostly cloudy. High 54.

Wind
W 13 mph
Wind gusts
25 mph
Precipitation
26% · 0 in
UV index (max)
3 Moderate

Night

Low 37.

Low
37°
Sunrise7:09 AM
Sunset4:57 PM
Daylight9 h 47 min
SourceExtended outlook
FriNov 1351°41°ShowersNight low 41°58%

Day

Showers. High 51.

Wind
W 8 mph
Wind gusts
19 mph
Precipitation
58% · 0.03 in
UV index (max)
3 Moderate

Night

Low 41.

Low
41°
Sunrise7:10 AM
Sunset4:56 PM
Daylight9 h 45 min
SourceExtended outlook
SatNov 1451°39°Partly cloudyNight low 39°16%

Day

Partly cloudy. High 51.

Wind
SE 5 mph
Wind gusts
18 mph
Precipitation
16% · 0 in
UV index (max)
4 Moderate

Night

Low 39.

Low
39°
Sunrise7:12 AM
Sunset4:55 PM
Daylight9 h 43 min
SourceExtended outlook
SunNov 1553°40°ShowersNight low 40°58%

Day

Showers. High 53.

Wind
SE 8 mph
Wind gusts
25 mph
Precipitation
58% · 0.03 in
UV index (max)
3 Moderate

Night

Low 40.

Low
40°
Sunrise7:13 AM
Sunset4:54 PM
Daylight9 h 41 min
SourceExtended outlook
MonNov 1649°41°ShowersNight low 41°87%

Day

Showers. High 49.

Wind
SE 9 mph
Wind gusts
27 mph
Precipitation
87% · 0.23 in
UV index (max)
2 Low

Night

Low 41.

Low
41°
Sunrise7:14 AM
Sunset4:53 PM
Daylight9 h 38 min
SourceExtended outlook
TueNov 1744°35°ShowersNight low 35°42%

Day

Showers. High 44.

Wind
NW 9 mph
Wind gusts
17 mph
Precipitation
42% · 0.01 in
UV index (max)
2 Low

Night

Low 35.

Low
35°
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
High28°31°39°53°66°76°81°79°71°57°44°33°
Low13°15°22°34°45°54°59°57°50°40°31°21°
Precip2.13 in1.93 in2.13 in2.52 in3.07 in3.19 in3.07 in3.23 in3.15 in2.80 in3.23 in2.40 in
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 732 ft · Population 18,809 · Time zone America/Toronto