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Notices:

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The Notice Inventory contains a record of all past and current Notices.

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.

WELLAND *
ONTARIO
Latitude: 42°59'33.096" N Longitude: 79°15'40.098" W Elevation: 175.30 m
Climate ID: 6139445 WMO ID: TC ID:

* This station meets WMO standards for temperature and precipitation.

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)-4.7 -4.3 0.7 6.9 13.4 18.6 21.4 20.6 16.3 10 4.3 -1.5 8.5 A
Standard Deviation2.7 2.7 2.1 1.6 1.9 1.3 1.1 1.3 1 1.6 1.7 2.7 0.9 A
Daily Maximum (°C)-0.8 0 5.3 12.2 19.2 24.1 26.7 25.7 21.2 14.8 8.2 2.3 13.2 A
Daily Minimum (°C)-8.6 -8.5 -3.9 1.6 7.6 13.1 16.1 15.4 11.3 5.2 0.4 -5.3 3.7 A
Extreme Maximum (°C)20 20.5 27 32.5 33.9 36.1 37.8 37.8 35 32.2 25.6 20.6    
Date (yyyy/dd)1950/25 2000/26 1998/31 1990/28 1911/22 1933/29 1911/04 1948/26 1881/06 1927/02 1961/03 1941/04  
Extreme Minimum (°C)-32.8 -31.1 -27.8 -18.3 -6.1 1.1 3.9 0.5 -2.2 -8.9 -20 -27.8    
Date (yyyy/dd)1884/25 1934/09 1873/04 1923/01 1932/06 1894/08 1945/11 1982/29 1883/10 1965/29 1880/26 1925/27  
Precipitation:
Rainfall (mm)34.8 30.4 57.8 71.5 77.3 91.5 70.4 82.7 97.9 84.3 82.1 57.6 838.4 A
Snowfall (cm)41.9 35.9 20 5 0.4 0 0 0 0 0.2 9.5 40 152.9 A
Precipitation (mm)76.7 66.3 77.8 76.5 77.7 91.5 70.4 82.7 97.9 84.5 91.6 97.6 991.3 A
Extreme Daily Rainfall (mm)52.8 50.8 46.2 46 52.1 93 141 88.1 118.4 93.4 61.2 36.8    
Date (yyyy/dd)1998/07 1926/25 1972/01 1918/01 1894/19 1968/25 1892/03 1944/17 1959/30 1995/05 1999/02 1986/02  
Extreme Daily Snowfall (cm)78.7 61 81.3 43.2 13 0 0 0 0 20.3 33 50.8    
Date (yyyy/dd)1902/22 1894/12 1900/01 1894/11 1895/14 1873/01 1873/01 1873/01 1873/01 1873/31 1969/15 1898/05  
Extreme Daily Precipitation (mm)78.7 61 81.3 55.9 52.1 93 141 88.1 118.4 93.4 61.2 50.8    
Date (yyyy/dd)1902/22 1894/12 1900/01 1885/03 1894/19 1968/25 1892/03 1944/17 1959/30 1995/05 1999/02 1898/05  
Extreme Snow Depth (cm)28 7 25 5 0 0 0 0 0 0 14 11    
Date (yyyy/dd)1996/11 1995/27 1996/07 1992/01 1983/01 1983/01 1983/01 1983/01 1983/01 1983/01 1995/15 1995/20  
Days with Maximum Temperature:
<= 0 °C17 14.5 7 0.60 0 0 0 0 0 0 2.2 9.9 51.2 A
> 0 °C14 13.8 24 29.4 31 30 31 31 30 31 27.8 21.1 314.1 A
> 10 °C1 1.2 6.1 18 29.5 30 31 31 29.9 25.1 10 2.3 215.1 A
> 20 °C0 0.04 0.72 3.5 12.9 25 30.2 29.2 17 4.6 0.17 0 123.3 A
> 30 °C0 0 0 0.03 0.27 1.4 3.5 1.5 0.34 0 0 0 7 A
> 35 °C0 0 0 0 0 0 0.03 0.03 0 0 0 0 0.06 A
Days with Minimum Temperature:
> 0 °C2.1 2.3 6.5 18 29.3 30 31 31 29.8 26.1 14.4 4.6 225.1 A
<= 2 °C30.4 27.4 27.7 16.8 4 0.03 0 0.07 1.2 9.2 20 28.8 165.7 A
<= 0 °C28.9 25.9 24.6 12 1.7 0 0 0 0.21 4.9 15.6 26.4 140.2 A
< -2 °C25 21.8 18.1 5.8 0.17 0 0 0 0 1.6 8.8 20.2 101.5 A
< -10 °C11.7 10.9 4 0.17 0 0 0 0 0 0 0.37 6.2 33.4 A
< -20 °C1.5 1.2 0.21 0 0 0 0 0 0 0 0 0.25 3.1 A
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 A
Days with Rainfall:
>= 0.2 mm5.8 5.2 9.1 12.5 12.9 11.9 10.3 10.8 11.6 12.4 12.2 8.7 123.4 A
>= 5 mm2.2 2.2 4.1 4.7 5.1 5.6 4.2 4.8 5.6 5.3 5.5 4.1 53.7 A
>= 10 mm1.1 1 1.8 2.4 2.6 2.9 2.5 3.1 3.4 2.6 2.6 1.9 28 A
>= 25 mm0.21 0.15 0.20 0.27 0.23 0.79 0.57 0.70 0.73 0.57 0.40 0.29 5.1 A
Days With Snowfall:
>= 0.2 cm9.9 8.3 4.8 1.4 0.07 0 0 0 0 0.07 2.4 8.1 35.1 A
>= 5 cm2.9 2.7 1.6 0.30 0.07 0 0 0 0 0.04 0.70 2.7 10.9 A
>= 10 cm1.4 0.85 0.60 0.10 0 0 0 0 0 0 0.30 1.2 4.5 A
>= 25 cm0.03 0.07 0 0 0 0 0 0 0 0 0 0.14 0.24 A
Days with Precipitation:
>= 0.2 mm14.8 12.7 12.6 13.3 12.9 11.9 10.3 10.8 11.6 12.4 14 15.5 152.9 A
>= 5 mm5.2 4.9 5.6 5 5.2 5.6 4.2 4.8 5.6 5.4 6.2 6.9 64.5 A
>= 10 mm2.7 1.9 2.4 2.5 2.6 2.9 2.5 3.1 3.4 2.6 3 3.2 32.9 A
>= 25 mm0.28 0.22 0.27 0.27 0.23 0.79 0.57 0.70 0.73 0.57 0.40 0.43 5.5 A
Degree Days:
Above 24 °C0 0 0 0 0 1.7 8.5 4.9 1.1 0 0 0 16.3 A
Above 18 °C0 0 0 0.8 11.9 54.6 111.9 91.7 30.2 1.6 0 0 302.8 A
Above 15 °C0 0 0.5 4.5 36.2 118.9 199.8 174.5 72 9.2 0.4 0.1 616.1 A
Above 10 °C0.2 0 4.6 25.3 123.3 258.3 354.6 327.7 190.5 55.1 9.8 1.2 1350.6 A
Above 5 °C2.6 2.3 23.2 90.2 261.3 407.9 509.6 482.7 337.2 161.1 47.7 8.5 2334.4 A
Above 0 °C21.1 21.9 79.5 212.5 415.9 557.9 664.6 637.7 487.2 309.3 140.8 43 3591.3 A
Below 0 °C162.1 141.8 59 4.8 0 0 0 0 0 0 12.7 89 469.4 A
Below 5 °C298.6 263.4 157.7 32.5 0.5 0 0 0 0 6.8 69.6 209.6 1038.7 A
Below 10 °C451.2 402.4 294.1 117.6 17.4 0.3 0 0 3.3 55.9 181.7 357.3 1881.1 A
Below 15 °C606 543.6 445 246.7 85.4 11 0.2 1.8 34.9 164.9 322.3 511.1 2972.8 A
Below 18 °C699 628.4 537.5 333 154 36.7 5.3 12.1 83.1 250.3 411.9 604.1 3755.3 A


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Date Modified: 2013-02-04

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