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Notices:

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Canadian Climate Normals 1971-2000

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes for the location.

NOTE!! Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

WINDSOR A *
ONTARIO
Latitude: 42°16'32.000" N Longitude: 82°57'20.000" W Elevation: 189.60 m
Climate ID: 6139525 WMO ID: 71538 TC ID: YQG
Normals from to  
January-June January-December+Year July-December
Temperature:Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Daily Average (°C)-4.5 -3.2 2 8.2 14.9 20.1 22.7 21.6 17.4 11 4.6 -1.5 9.4 A
Standard Deviation2.9 2.7 2.1 1.6 2.1 1.3 1.1 1.2 1.3 1.7 1.7 2.7 0.8 A
Daily Maximum (°C)-0.9 0.6 6.4 13.4 20.5 25.4 27.9 26.6 22.5 15.6 8.3 1.9 14 A
Daily Minimum (°C)-8.1 -7 -2.4 3 9.3 14.7 17.4 16.6 12.3 6.2 0.9 -4.8 4.9 A
Extreme Maximum (°C)17.8 20.4 26.6 31.1 34 40.2 38.3 37.7 37.2 32.2 26.1 19.6    
Date (yyyy/dd)1950/25 2000/26 1986/30 1990/25 1988/31 1988/25 1941/27 1988/17 1953/02 1963/06 1950/01 1998/06  
Extreme Minimum (°C)-29.1 -23.4 -19.4 -9.5 -2.8 2.8 5.6 5.2 -1.1 -5 -15.6 -23.4    
Date (yyyy/dd)1994/19 1982/06 1943/08 1982/07 1966/10 1945/05 1945/11 1982/29 1942/29 1965/29 1958/30 1983/30  
Precipitation:
Rainfall (mm)28.7 33.3 55.6 80.7 80.7 89.8 81.8 79.7 96.2 64.1 67.3 47.3 805.2 A
Snowfall (cm)35 27.5 20.6 4.3 0 0 0 0 0 0.7 8.3 30.1 126.6 A
Precipitation (mm)57.6 57.3 75 85.1 80.8 89.8 81.8 79.7 96.2 64.9 75.5 74.7 918.3 A
Average Snow Depth (cm)5 4 1 0 0 0 0 0 0 0 0 3 1 A
Median Snow Depth (cm)5 3 0 0 0 0 0 0 0 0 0 1 1 A
Snow Depth at Month-end (cm)4 3 0 0 0 0 0 0 0 0 0 4 1 A
Extreme Daily Rainfall (mm)43 70.6 39.6 94.6 54.9 78 82 79.4 89 71.6 48.4 72.6    
Date (yyyy/dd)1993/04 1990/22 1954/24 2000/20 1953/30 1968/25 1983/29 1994/13 1981/30 1949/11 2001/30 1967/21  
Extreme Daily Snowfall (cm)28.2 36.8 22.4 14.2 0.5 0 0 0 0 13.8 34.8 32.3    
Date (yyyy/dd)1999/02 1965/25 1968/22 1961/16 1954/03 1941/01 1941/01 1940/01 1940/01 1989/19 1966/02 1974/01  
Extreme Daily Precipitation (mm)43 70.6 39.6 94.6 54.9 78 82 79.4 89 71.6 51.1 72.6    
Date (yyyy/dd)1993/04 1990/22 1954/24 2000/20 1953/30 1968/25 1983/29 1994/13 1981/30 1949/11 1951/06 1967/21  
Extreme Snow Depth (cm)36 42 30 14 0 0 0 0 0 0 15 33    
Date (yyyy/dd)1999/12 1982/09 1960/04 1982/06 1955/01 1955/01 1955/01 1955/01 1955/01 1955/01 1966/03 2000/31  
Days with Maximum Temperature:
<= 0 °C16.3 13.5 4.6 0.17 0 0 0 0 0 0 1.2 10.3 46.1 A
> 0 °C14.7 14.8 26.4 29.8 31 30 31 31 30 31 28.8 20.7 319.1 A
> 10 °C1.1 1.8 8.2 20.3 30.1 30 31 31 30 26.5 11 2.4 223.4 A
> 20 °C0 0.03 1 4.6 15.8 26.4 30.6 30.1 20.7 6.1 0.63 0 135.9 A
> 30 °C0 0 0 0.07 1.6 4.6 8.1 4.8 1.6 0 0 0 20.7 A
> 35 °C0 0 0 0 0 0.23 0.60 0.17 0.03 0 0 0 1 A
Days with Minimum Temperature:
> 0 °C2.4 3.7 9.5 22.7 30.9 30 31 31 29.9 29.1 16.6 5.6 242.5 A
<= 2 °C30.1 27.2 26.2 12.8 0.77 0 0 0 0.13 5 18.9 29 150.1 A
<= 0 °C28.6 24.6 21.5 7.3 0.10 0 0 0 0.07 1.9 13.4 25.4 122.8 A
< -2 °C25.4 20.9 15.8 3.3 0 0 0 0 0 0.47 7.7 19.9 93.4 A
< -10 °C11.7 9 2.2 0 0 0 0 0 0 0 0.07 5.7 28.7 A
< -20 °C0.83 0.47 0 0 0 0 0 0 0 0 0 0.30 1.6 A
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 A
Days with Rainfall:
>= 0.2 mm5.7 5.6 9.4 12.2 11.8 11 10.2 10 10.9 10.5 10.6 7.9 115.7 A
>= 5 mm1.7 2 4 5 4.9 5.6 4.8 4.4 5 3.9 4.2 3.2 48.8 A
>= 10 mm1 1 1.9 2.9 2.7 3.4 2.8 2.7 3.3 2.2 2.3 1.5 27.7 A
>= 25 mm0.13 0.23 0.20 0.37 0.60 0.83 0.60 0.63 1.1 0.40 0.40 0.20 5.7 A
Days With Snowfall:
>= 0.2 cm12.5 9.1 6.7 2.3 0.03 0 0 0 0 0.33 3.8 10.2 45 A
>= 5 cm2.2 1.8 1.3 0.23 0 0 0 0 0 0.03 0.53 1.9 8.1 A
>= 10 cm0.57 0.53 0.47 0.07 0 0 0 0 0 0.03 0.10 0.53 2.3 A
>= 25 cm0.03 0.03 0 0 0 0 0 0 0 0 0 0.03 0.09 A
Days with Precipitation:
>= 0.2 mm15.1 12.3 13.9 13.3 11.8 11 10.2 10 10.9 10.5 12.8 14.9 146.7 A
>= 5 mm3.7 3.3 5.2 5.4 4.9 5.6 4.8 4.4 5 3.9 4.8 4.9 55.9 A
>= 10 mm1.5 1.7 2.4 3 2.7 3.4 2.8 2.7 3.3 2.2 2.6 2.2 30.5 A
>= 25 mm0.20 0.33 0.23 0.40 0.60 0.83 0.60 0.63 1.1 0.43 0.40 0.30 6.1 A
Days with Snow Depth:
>= 1 cm19.3 15 6.6 0.80 0 0 0 0 0 0 1.5 10.6 53.9 A
>= 5 cm13.2 9.3 3.4 0.23 0 0 0 0 0 0 0.63 6.1 32.8 A
>= 10 cm7 4.8 1.7 0.10 0 0 0 0 0 0 0.17 3.3 17.1 A
>= 20 cm1.4 1.5 0 0 0 0 0 0 0 0 0 0.73 3.6 A
Wind:
Speed (km/h)19.3 18.1 18.8 18 15.6 14.2 12.6 11.6 13 15.3 17.4 17.5 16 A
Most Frequent DirectionSW S S S S S S S S S SW SW S A
Maximum Hourly Speed (km/h)72 77 92 80 76 59 74 64 85 72 76 79    
Date (yyyy/dd)1971/29 1971/05 1959/15 1965/11 1964/09 1990/03 1991/07 1971/10 1960/01 1960/23 1998/11 1961/05  
Maximum Gust Speed (km/h)109 113 148 134 107 124 145 109 113 102 121 113    
Date (yyyy/dd)1996/29 1967/15 1959/15 1956/03 1987/14 1963/09 1961/16 1987/02 1960/01 1995/05 1968/28 1961/05  
Direction of Maximum GustW W S S SW NW S SW NW N SW SW S  
Days with Winds >= 52 km/h1.9 1.4 2.5 1.8 1.1 0.9 0.7 0.3 0.4 0.5 1.2 1.2 14 A
Days with Winds >= 63 km/h0.6 0.4 0.7 0.7 0.5 0.3 0.4 0.2 0.1 0.2 0.3 0.3 4.7 A
Degree Days:
Above 24 °C0 0 0 0 1 8.4 20.8 10.8 2.4 0 0 0 43.4 A
Above 18 °C0 0 0.2 2.6 24.7 84.1 146.5 116.7 43.6 3.2 0 0 421.7 A
Above 15 °C0 0 1.3 8.4 57.6 157.3 237.9 205 95.2 14.4 0.7 0.1 777.7 A
Above 10 °C0.1 0.1 7.9 38 160.4 301.8 392.9 359.6 224.3 70.5 11.3 1.5 1568.4 A
Above 5 °C2.6 3.8 32.9 118.7 307 451.7 547.9 514.6 373.1 188.7 53 8.6 2602.7 A
Above 0 °C20.2 29.4 102.5 249 462 601.7 702.9 669.6 523.1 339.3 149 42.7 3891.4 A
Below 0 °C159.8 119.8 40.1 2.3 0 0 0 0 0 0 10.2 87.6 419.7 A
Below 5 °C297.1 235.5 125.5 22 0 0 0 0 0 4.4 64.3 208.6 957.3 A
Below 10 °C449.6 373.1 255.5 91.3 8.5 0.1 0 0 1.2 41.2 172.5 356.4 1749.4 A
Below 15 °C604.5 514.3 403.9 211.7 60.6 5.6 0 0.3 22.1 140.1 312 510 2785.1 A
Below 18 °C697.5 599.1 495.8 295.9 120.8 22.4 1.6 5.1 60.5 221.9 401.3 602.9 3524.8 A
Humidex:
Extreme Humidex18.1 22.3 29.9 35.7 42.3 52.1 50.9 47.3 46.9 36.3 27.5 24.1    
Date (yyyy/dd)1997/04 2000/26 1998/30 1970/30 1962/18 1953/20 1995/14 1988/02 1985/07 1959/03 1968/01 1998/06  
Days with Humidex >= 300 0 0 0.5 4.7 13.2 21.1 18.7 8.4 0.8 0 0 67.4 A
Days with Humidex >= 350 0 0 0 1.3 5.3 10.5 8.1 2.7 0.1 0 0 28.1 A
Days with Humidex >= 400 0 0 0 0 1 2.9 2.1 0.5 0 0 0 6.4 A
Wind Chill:
Extreme Wind Chill-42.4 -36 -27.5 -18 -7.5 1.2 7 3.8 -1.4 -11 -25.2 -35.3    
Date (yyyy/dd)1963/23 1958/17 1962/01 1954/03 1954/04 1972/10 1972/05 1965/29 1956/20 1962/26 1958/29 1983/25  
Days with Wind Chill < -207.5 5.2 1 0 0 0 0 0 0 0 0.1 3.2 17 A
Days with Wind Chill < -301.1 0.5 0 0 0 0 0 0 0 0 0 0.2 1.8 A
Days with Wind Chill < -400.1 0 0 0 0 0 0 0 0 0 0 0 0.1 A
Humidity:
Average Vapour Pressure (kPa)0.4 0.4 0.5 0.7 1.1 1.6 1.9 1.9 1.5 1 0.7 0.5 1 A
Average Relative Humidity - 0600LST (%)80.1 79.4 78.8 77.4 78.4 80.6 83 86.8 85.9 82.3 81.4 81.4 81.3 A
Average Relative Humidity - 1500LST (%)70.1 66.8 61.1 54.1 51.3 53.4 53.8 57.4 57 58.1 66.5 72.1 60.1 A
Pressure:
Average Station Pressure (kPa)99.4 99.5 99.3 99.2 99.2 99.2 99.3 99.4 99.5 99.5 99.4 99.5 99.4 A
Average Sea Level Pressure (kPa)101.8 101.8 101.6 101.5 101.5 101.4 101.5 101.7 101.7 101.8 101.7 101.8 101.7 A
Visibility (hours with):
< 1 km16 18.2 17.4 5.4 4.2 3 2.2 4.8 7.3 11.5 8.3 22.1 120.4 C
1 to 9 km196.2 176.1 146.5 91.6 112.5 124.2 147.4 185.2 141.6 111.9 140.4 175.9 1749.4 C
> 9 km531.8 484.5 580.2 623 627.4 592.8 594.4 554 571.2 620.6 571.3 546 6896.9 C
Cloud Amount (hours with):
0 to 2 tenths136.3 139.5 181 183.4 220.7 207.6 240.1 240.2 233.7 226.9 140.1 127.2 2276.7 C
3 to 7 tenths102.4 103.2 122.9 127.4 152.7 200.9 223.5 198.9 172.4 142.2 106.5 92.9 1745.9 C
8 to 10 tenths505.3 436.1 440.1 409.2 370.6 311.4 280.4 305 313.8 374.9 473.3 524 4744.1 C


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Date Modified: 2013-02-04

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