EXTREME COLD WARNING

Observed at: Toronto Buttonville Municipal Airport
Date: Sunday January 20, 2019 at 15:00 EST
Temp.: -16.6 °C
Wind Chill: -29
Wind: NNW 33 gust 51 km/h
Humidity: 54 %
Dew point: -24.0 °C
Pressure: 101.5 kPa
Tendency:
Sunrise: 07:46
Sunset: 17:11
Normals:
Max -3°C Min -12°C
Yesterday
  Max: °C
  Min: °C
  Rainfall: mm

 Extended Forecast - Environment Canada
  Monday
Sunny
Sunny
Max: -14°C
Tuesday
Chance of flurries (30%)
Chance of flurries
Max: -5°C
Wednesday
Flurries or rain showers
Flurries or rain showers
Max: 2°C
Thursday
Chance of flurries (40%)
Chance of flurries
Max: -3°C
Friday
Chance of flurries (40%)
Chance of flurries
Max: -9°C
Saturday
Chance of flurries (60%)
Chance of flurries
Max: -9°C
Sunday night
A few clouds
A few clouds
Min: -25°C
Monday night
Clear
Clear
Min: -20°C
Tuesday night
Periods of snow
Periods of snow
Min: -5°C
Wednesday night
Chance of flurries (30%)
Chance of flurries
Min: -7°C
Thursday night
Chance of flurries (60%)
Chance of flurries
Min: -10°C
Friday night
Chance of flurries (60%)
Chance of flurries
Min: -16°C

Forecast

Markham, ON (Issued: Sunday January 20, 2019 at 15:30 EST)

Tonight
A few clouds. Local blowing snow early this evening. Wind north 30 km/h gusting to 60. Low minus 25. Wind chill minus 29 in the evening and minus 39 overnight. Frostbite in minutes.
Monday
Sunny. Wind northwest 30 km/h gusting to 50. High minus 14. Wind chill minus 39 in the morning and minus 25 in the afternoon. Frostbite in minutes. UV index 1 or low.
Monday night
Clear. Wind northwest 40 km/h gusting to 60 becoming light early in the evening. Low minus 20. Wind chill minus 28 in the evening and minus 22 overnight. Risk of frostbite.
Tuesday
Cloudy with 30 percent chance of flurries. High minus 5.
Tuesday night
Periods of snow. Low minus 5.
Wednesday
Flurries or rain showers. High plus 2.
Wednesday night
Cloudy with 30 percent chance of flurries. Low minus 7.
Thursday
A mix of sun and cloud with 40 percent chance of flurries. High minus 3.
Thursday night
Cloudy with 60 percent chance of flurries. Low minus 10.
Friday
Cloudy with 40 percent chance of flurries. High minus 9.
Friday night
Cloudy with 60 percent chance of flurries. Low minus 16.
Saturday
Cloudy with 60 percent chance of flurries. High minus 9.
Averages and extremes
Highest temperature(1987-2015)10.9 °C2006
Lowest temperature(1987-2015)-23.2 °C1994
Average highn/a 
Average lown/a 
Averagen/a 
Greatest rainfall(1987-2015)25.9 mm1995
Greatest snowfall(1987-2015)4.2 cm2000
Greatest precipitation(1987-2015)25.9 mm1995
Most snow on the ground(1987-2015)40.0 cm2009
Monthly frequency of precipitation54.0 % 

24 Hour Forecast - Markham, ON

Date/Time
(EST)
Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
Wind
Chill
20 January 2019
16:00 -18 Mainly sunny (20%)  Mainly sunny Low N 30 gust 60 -30
17:00 -19 A few clouds (20%)  A few clouds Low N 30 gust 60 -31
18:00 -20 A few clouds (10%)  A few clouds Low N 30 gust 60 -33
19:00 -21 A few clouds (10%)  A few clouds Low N 30 gust 60 -34
20:00 -22 A few clouds (10%)  A few clouds Low N 30 gust 60 -35
21:00 -22 A few clouds (10%)  A few clouds Low NW 30 gust 50 -36
22:00 -23 A few clouds (10%)  A few clouds Low NW 30 gust 50 -36
23:00 -23 A few clouds (10%)  A few clouds Low NW 30 gust 50 -37
21 January 2019
00:00 -24 A few clouds (10%)  A few clouds Low NW 30 gust 50 -37
01:00 -24 A few clouds (10%)  A few clouds Low NW 30 gust 50 -38
02:00 -24 A few clouds (10%)  A few clouds Low NW 30 gust 50 -38
03:00 -25 A few clouds (10%)  A few clouds Low NW 30 gust 50 -39
04:00 -25 A few clouds (10%)  A few clouds Low NW 30 gust 50 -39
05:00 -25 A few clouds (10%)  A few clouds Low NW 30 gust 50 -39
06:00 -25 Clear (0%)  Clear Nil NW 30 gust 50 -39
07:00 -25 Clear (0%)  Clear Nil NW 30 gust 50 -39
08:00 -24 Sunny (0%)  Sunny Nil NW 30 gust 50 -38
09:00 -24 Sunny (0%)  Sunny Nil NW 30 gust 50 -37
10:00 -23 Sunny (0%)  Sunny Nil NW 30 gust 50 -36
11:00 -21 Sunny (0%)  Sunny Nil NW 30 gust 50 -34
12:00 -19 Sunny (0%)  Sunny Nil NW 30 gust 50 -31
13:00 -17 Sunny (0%)  Sunny Nil NW 30 gust 50 -29
14:00 -16 Sunny (0%)  Sunny Nil NW 30 gust 50 -27
15:00 -15 Sunny (0%)  Sunny Nil NW 30 gust 50 -26
 
† 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%

Environment Canada