Canadian Climate Normals 1971-2000 Station Data

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.

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.

Metadata including Station Name, Province, Latitude, Longitude, Elevation, Climate ID, WMO ID, TC ID
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.

1971 to 2000 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
Extreme Maximum (°C)20 20.5 27 32.5 33.9 36.1 37.8 37.8 35 32.2 25.6 20.6   Legend
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   Legend
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 LegendAA
Snowfall (cm)41.9 35.9 20 5 0.4 0 0 0 0 0.2 9.5 40 152.9 LegendAA
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 LegendAA
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   Legend
Extreme Daily Snowfall (cm)78.7 61 81.3 43.2 13 0 0 0 0 20.3 33 50.8   Legend
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   Legend
Extreme Snow Depth (cm)28 7 25 5 0 0 0 0 0 0 14 11   Legend
Days with Maximum Temperature:
<= 0 °C17 14.5 7 0.60 0 0 0 0 0 0 2.2 9.9 51.2 LegendAA
> 0 °C14 13.8 24 29.4 31 30 31 31 30 31 27.8 21.1 314.1 LegendAA
> 10 °C1 1.2 6.1 18 29.5 30 31 31 29.9 25.1 10 2.3 215.1 LegendAA
> 20 °C0 0.04 0.72 3.5 12.9 25 30.2 29.2 17 4.6 0.17 0 123.3 LegendAA
> 30 °C0 0 0 0.03 0.27 1.4 3.5 1.5 0.34 0 0 0 7 LegendAA
> 35 °C0 0 0 0 0 0 0.03 0.03 0 0 0 0 0.06 LegendAA
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 LegendAA
<= 2 °C30.4 27.4 27.7 16.8 4 0.03 0 0.07 1.2 9.2 20 28.8 165.7 LegendAA
<= 0 °C28.9 25.9 24.6 12 1.7 0 0 0 0.21 4.9 15.6 26.4 140.2 LegendAA
< -2 °C25 21.8 18.1 5.8 0.17 0 0 0 0 1.6 8.8 20.2 101.5 LegendAA
< -10 °C11.7 10.9 4 0.17 0 0 0 0 0 0 0.37 6.2 33.4 LegendAA
< -20 °C1.5 1.2 0.21 0 0 0 0 0 0 0 0 0.25 3.1 LegendAA
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendAA
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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
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 LegendAA
>= 5 cm2.9 2.7 1.6 0.30 0.07 0 0 0 0 0.04 0.70 2.7 10.9 LegendAA
>= 10 cm1.4 0.85 0.60 0.10 0 0 0 0 0 0 0.30 1.2 4.5 LegendAA
>= 25 cm0.03 0.07 0 0 0 0 0 0 0 0 0 0.14 0.24 LegendAA
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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
Degree Days:
Above 24 °C0 0 0 0 0 1.7 8.5 4.9 1.1 0 0 0 16.3 LegendAA
Above 18 °C0 0 0 0.8 11.9 54.6 111.9 91.7 30.2 1.6 0 0 302.8 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
Below 0 °C162.1 141.8 59 4.8 0 0 0 0 0 0 12.7 89 469.4 LegendAA
Below 5 °C298.6 263.4 157.7 32.5 0.5 0 0 0 0 6.8 69.6 209.6 1038.7 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
Legend
  • A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
  • B = At least 25 years
  • C = At least 20 years
  • D = At least 15 years