Observed at: Toronto Buttonville Municipal Airport
Date: Friday July 20, 2018 at 04:00 EDT
Clear
Clear
Temp.: 14.9 °C
Wind: NNE 5 km/h
Humidity: 92 %
Dew point: 13.6 °C
Pressure: 101.7 kPa
Tendency:
Visibility: 24.1 km
Sunrise: 05:53
Sunset: 20:54
Normals:
Max 26°C Min 15°C
Yesterday
  Max: 26.6 °C
  Min: 13.1 °C
  Rainfall: 0.0 mm

 Extended Forecast - Environment Canada
Friday
Mainly sunny
Mainly sunny
Max: 30°C
Saturday
Chance of showers (30%)
Chance of showers
Max: 26°C
Sunday
A mix of sun and cloud
A mix of sun and cloud
Max: 23°C
Monday
Chance of showers (30%)
Chance of showers
Max: 24°C
Tuesday
Chance of showers (30%)
Chance of showers
Max: 24°C
Wednesday
A mix of sun and cloud
A mix of sun and cloud
Max: 24°C
Thursday
Chance of showers (30%)
Chance of showers
Max: 27°C
Friday night
Chance of showers (30%)
Chance of showers
Min: 22°C
Saturday night
Chance of showers (60%)
Chance of showers
Min: 16°C
Sunday night
Chance of showers (30%)
Chance of showers
Min: 18°C
Monday night
Chance of showers (30%)
Chance of showers
Min: 20°C
Tuesday night
Cloudy periods
Cloudy periods
Min: 19°C
Wednesday night
Chance of showers (30%)
Chance of showers
Min: 18°C
 

Forecast

Markham, ON (Issued: Friday July 20, 2018 at 05:00 EDT)

Today
Sunny. Becoming a mix of sun and cloud this afternoon. Wind becoming southeast 20 km/h gusting to 40 near noon. High 30. Humidex 34. UV index 9 or very high.
Tonight
Partly cloudy. 30 percent chance of showers overnight with risk of a thunderstorm. Wind southeast 20 km/h gusting to 40. Low 22.
Saturday
A mix of sun and cloud. 30 percent chance of showers in the morning with risk of a thunderstorm. Wind east 20 km/h gusting to 40. High 26. Humidex 30.
Saturday night
Cloudy with 60 percent chance of showers. Low 16.
Sunday
A mix of sun and cloud. High 23.
Sunday night
Cloudy periods with 30 percent chance of showers. Low 18.
Monday
A mix of sun and cloud with 30 percent chance of showers. High 24.
Monday night
Cloudy periods with 30 percent chance of showers. Low 20.
Tuesday
A mix of sun and cloud with 30 percent chance of showers. High 24.
Tuesday night
Cloudy periods. Low 19.
Wednesday
A mix of sun and cloud. High 24.
Wednesday night
Cloudy periods with 30 percent chance of showers. Low 18.
Thursday
A mix of sun and cloud with 30 percent chance of showers. High 27.
Averages and extremes
Highest temperature(1986-2014)36.0 °C2011
Lowest temperature(1986-2014)8.8 °C2000
Average highn/a 
Average lown/a 
Averagen/a 
Greatest rainfall(1986-2014)39.8 mm2008
Greatest snowfall(1986-2014)0.0 cm1986
Greatest precipitation(1986-2014)39.8 mm2008
Most snow on the ground(1986-2014)0.0 cm1986
Monthly frequency of precipitation36.0 % 

24 Hour Forecast - Markham, ON

Date/Time
(EDT)
Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)

Humidex
20 July 2018
05:00 17 Clear (0%)  Clear Nil NE 10
06:00 18 Sunny (0%)  Sunny Nil NE 10
07:00 20 Sunny (0%)  Sunny Nil NE 10 25
08:00 21 Sunny (10%)  Sunny Low NE 10 26
09:00 22 Sunny (10%)  Sunny Low SE 10 27
10:00 24 Sunny (10%)  Sunny Low SE 10 28
11:00 25 Sunny (10%)  Sunny Low SE 10 29
12:00 26 Sunny (10%)  Sunny Low SE 20 gust 40 30
13:00 28 Sunny (10%)  Sunny Low SE 20 gust 40 33
14:00 29 A mix of sun and cloud (10%)  A mix of sun and cloud Low SE 20 gust 40 34
15:00 29 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 34
16:00 30 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 34
17:00 30 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 34
18:00 29 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 33
19:00 28 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 33
20:00 27 A mix of sun and cloud (20%)  A mix of sun and cloud Low SE 20 gust 40 32
21:00 26 Partly cloudy (20%)  Partly cloudy Low SE 20 31
22:00 26 Partly cloudy (20%)  Partly cloudy Low SE 20 31
23:00 25 Partly cloudy (20%)  Partly cloudy Low SE 20 30
21 July 2018
00:00 24 Partly cloudy (20%)  Partly cloudy Low SE 20 29
01:00 24 Partly cloudy (20%)  Partly cloudy Low SE 20 29
02:00 23 Chance of showers. Risk of thunderstorms (30%)  Chance of showers. Risk of thunderstorms Low SE 20 27
03:00 23 Chance of showers. Risk of thunderstorms (30%)  Chance of showers. Risk of thunderstorms Low SE 20 28
04:00 22 Chance of showers. Risk of thunderstorms (30%)  Chance of showers. Risk of thunderstorms Low SE 20 27
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%
‡ Value not significant

Environment Canada