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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.

SLEEMAN
ONTARIO
Latitude: Longitude: Elevation:
Climate ID: WMO ID: TC ID:
Temperature:Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Daily Average (°C)-17.2 -13.2 -5.6 4.1 11.8 16.2 19 17.4 11.8 5.7 -4.1 -14 2.7 D
Standard Deviation3.8 3.9 3.1 2.1 2.3 1.6 1.2 1.6 1.1 1.6 2.6 3.9 1.2 D
Daily Maximum (°C)-11.4 -7 0.3 10.5 18.8 22.3 25 23.4 17.3 10.5 -0.2 -8.9 8.4 D
Daily Minimum (°C)-22.9 -19.3 -11.4 -2.2 4.8 9.9 12.9 11.4 6.3 0.8 -8 -19.1 -3.1 D
Extreme Maximum (°C)7 11 16.5 31.5 32.5 33.5 35 34.5 34.4 26.7 22.2 9    
Date (yyyy/dd)1981/25 1991/02 1986/29 1980/21 1986/30 1988/07 1988/05 1984/28 1976/07 1975/07 1975/05 1982/02  
Extreme Minimum (°C)-44 -41 -37.5 -27.8 -8 -2 1.1 -1.7 -6 -17 -39 -43    
Date (yyyy/dd)1979/16 1982/03 1989/02 1975/02 1983/15 1983/07 1971/17 1977/24 1984/29 1988/30 1985/29 1990/30  
Precipitation:
Rainfall (mm)0.1 2.1 9.5 29.8 59.2 107.5 86.4 90.5 67.5 52.6 7.4 0.7 513.3 D
Snowfall (cm)27.9 19.5 20.7 8.1 1.1 0 0 0 1.8 5.1 29.8 22.8 136.7 D
Precipitation (mm)27.9 21.6 30.1 37.9 60.4 107.5 86.4 90.5 69.3 57.7 37.2 23.5 650 D
Extreme Daily Rainfall (mm)1 10 17.8 40.4 49.8 102.1 76.5 87 99.8 65.8 13.2 10.8    
Date (yyyy/dd)1967/22 1986/25 1990/15 1979/23 1988/28 1968/05 1965/12 1980/29 1971/30 1984/13 1972/05 1984/15  
Extreme Daily Snowfall (cm)20.1 19.6 33.3 45.7 12.7 0 0 0 16 21.1 34 19.3    
Date (yyyy/dd)1969/15 1977/23 1966/03 1970/19 1970/25 1964/01 1964/01 1964/01 1981/30 1970/09 1965/26 1967/20  
Extreme Daily Precipitation (mm)20.1 19.6 33.3 45.7 49.8 102.1 76.5 87 99.8 65.8 34 19.3    
Date (yyyy/dd)1969/15 1977/23 1966/03 1970/19 1988/28 1968/05 1965/12 1980/29 1971/30 1984/13 1965/26 1967/20  
Extreme Snow Depth (cm)68 60 59 39 4 0 0 0 0 10 41 41    
Date (yyyy/dd)1989/19 1989/01 1989/01 1989/02 1991/04 1981/01 1981/01 1981/01 1981/01 1981/23 1985/26 1988/30  
Days with Maximum Temperature:
<= 0 °C29.3 23 14.1 2.2 0.10 0 0 0 0 1.1 16.7 27.6 114 D
> 0 °C1.7 5.3 16.9 27.8 30.9 30 31 31 30 30 13.3 3.4 251.3 D
> 10 °C0 0.10 1.5 14.9 27.9 30 31 31 27.4 15.2 2.2 0 181.1 D
> 20 °C0 0 0 3.1 13.1 20.5 28.1 23.2 8.5 1.8 0.05 0 98.2 D
> 30 °C0 0 0 0.10 0.76 0.76 2 1.6 0.26 0 0 0 5.5 D
> 35 °C0 0 0 0 0 0 0 0 0 0 0 0 0 D
Days with Minimum Temperature:
> 0 °C0 0.29 2.1 10 24.2 29.3 31 30.9 26.5 16.1 2.5 0.22 173.1 D
<= 2 °C31 28.2 30.7 24.2 11.1 1.9 0.10 0.95 6.3 19.4 28.6 31 213.5 D
<= 0 °C31 28 28.9 20.1 6.8 0.71 0 0.15 3.5 14.9 27.5 30.8 192.2 D
< -2 °C31 27.2 25.6 14.2 3.2 0 0 0 1.3 7.8 23.8 30.3 164.4 D
< -10 °C27.3 21.6 15 2.5 0 0 0 0 0 0.45 9.9 24.8 101.5 D
< -20 °C18.4 13.5 5.8 0.29 0 0 0 0 0 0 2.1 14.1 54.1 D
< - 30 °C8.4 5.1 1 0 0 0 0 0 0 0 0.40 3.7 18.6 D
Days with Rainfall:
>= 0.2 mm0.10 0.57 3.1 6.3 11.3 13.3 12.6 12.9 12.3 10.2 2.7 0.10 85.4 D
>= 5 mm0 0.19 0.71 1.7 3.6 6.4 5.2 5 3.8 3 0.60 0.05 30.2 D
>= 10 mm0 0.05 0.10 0.86 1.9 3.6 2.7 2.8 1.8 1.2 0.15 0.05 15.2 D
>= 25 mm0 0 0 0.14 0.30 0.95 0.86 0.80 0.53 0.47 0 0 4.1 D
Days With Snowfall:
>= 0.2 cm10.5 8.8 7.2 2.1 0.43 0 0 0 0.26 2.1 8.6 10.5 50.4 D
>= 5 cm1.9 1.1 1.1 0.67 0.10 0 0 0 0.11 0.30 2.4 1.2 8.7 D
>= 10 cm0.67 0.19 0.48 0.19 0 0 0 0 0.11 0.05 0.80 0.30 2.8 D
>= 25 cm0 0 0 0 0 0 0 0 0 0 0.05 0 0.05 D
Days with Precipitation:
>= 0.2 mm10.6 9.1 9.5 7.9 11.6 13.3 12.6 12.9 12.4 11.8 10.6 10.6 132.8 D
>= 5 mm1.9 1.3 1.9 2.4 3.7 6.4 5.2 5 3.9 3.3 2.9 1.2 38.9 D
>= 10 mm0.67 0.24 0.57 1.1 1.9 3.6 2.7 2.8 1.9 1.3 1 0.35 18 D
>= 25 mm0 0 0 0.14 0.30 0.95 0.86 0.80 0.58 0.47 0.05 0 4.2 D
Degree Days:
Above 24 °C0 0 0 0 0 0.2 3 2.2 0.3 0 0 0 5.7 D
Above 18 °C0 0 0 0.6 9.8 22.5 54.3 39.2 7.2 0.1 0 0 133.7 D
Above 15 °C0 0 0 2.2 27.9 63.9 127.4 94.4 19.8 1.4 0 0 336.9 D
Above 10 °C0 0 0 14.3 96.5 186.2 278.8 231.2 83.5 14.8 0.5 0 905.8 D
Above 5 °C0 0 1.5 54.8 217.2 334.6 433.7 385.3 207 69.3 5.9 0 1709.1 D
Above 0 °C0.1 2.7 21.6 149.7 366.3 484.6 588.7 540.3 354.5 183 28.3 1 2720.6 D
Below 0 °C532.7 373.9 194.3 25.9 0.4 0 0 0 0 7.9 151.4 435.7 1722.2 D
Below 5 °C687.6 512.4 329.1 81.1 6.2 0 0 0 2.5 49.2 279 589.7 2536.8 D
Below 10 °C842.6 653.6 482.7 190.5 40.6 1.6 0.1 0.9 29 149.8 423.6 744.7 3559.7 D
Below 15 °C997.6 794.8 637.7 328.4 126.9 29.3 3.7 19.1 115.4 291.3 573.1 899.7 4817 D
Below 18 °C1090.6 879.5 730.7 416.9 201.9 77.9 23.6 56.9 192.7 383.1 663.1 992.7 5709.5 D



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