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
RICHMOND HILL *
ONTARIO
Latitude: 43°52'38.094" N Longitude: 79°26'52.074" W Elevation: 240.00 m
Climate ID: 6157012 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)-6.7 -5.6 -0.5 6.5 13.4 18.2 21 20 15.4 8.9 2.8 -3.4 7.5 LegendAA
Standard Deviation2.7 2.6 2.2 1.7 2 1.4 1.2 1.3 1.1 1.6 1.5 2.7 0.8 LegendAA
Daily Maximum (°C)-2.7 -1.4 4 11.6 19 23.8 26.5 25.3 20.4 13.5 6.2 0.1 12.2 LegendAA
Daily Minimum (°C)-10.7 -9.8 -5.1 1.4 7.7 12.6 15.5 14.7 10.4 4.2 -0.8 -6.9 2.8 LegendAA
Extreme Maximum (°C)14 14.5 25.5 31 32.5 35 37 36.5 34.4 29.4 23.3 20   Legend
Extreme Minimum (°C)-32.5 -29 -24 -15 -5.6 0.6 4.4 3 -3.3 -7.8 -15.5 -30   Legend
Precipitation:
Rainfall (mm)26 24.3 40.2 61.8 77.8 82.9 83.9 90.4 81.5 67.1 65.1 34.7 735.6 LegendAA
Snowfall (cm)37.6 29.6 25.9 9.1 0.1 0 0 0 0 1.5 13.4 39.7 156.8 LegendAA
Precipitation (mm)63.6 53.9 66.1 70.9 77.9 82.9 83.9 90.4 81.5 68.6 78.5 74.3 892.4 LegendAA
Average Snow Depth (cm)14 18 10 0 0 0 0 0 0 0 1 7 4 LegendDD
Median Snow Depth (cm)14 18 9 0 0 0 0 0 0 0 0 6 4 LegendDD
Snow Depth at Month-end (cm)17 14 2 0 0 0 0 0 0 0 1 11 4 LegendDD
Extreme Daily Rainfall (mm)32.8 37.6 34.8 39.4 63.6 50.2 87.9 93.4 87.8 54 46.2 37.6   Legend
Extreme Daily Snowfall (cm)22.4 23 20.2 23.9 1.5 0 0 0 0 14.2 17.2 40.4   Legend
Extreme Daily Precipitation (mm)46.2 37.6 34.8 39.4 63.6 50.2 87.9 93.4 87.8 54 50 40.4   Legend
Extreme Snow Depth (cm)52 55 56 18 0 0 0 0 0 9 16 45   Legend
Days with Maximum Temperature:
<= 0 °C20 16.5 8.6 0.86 0 0 0 0 0 0 3.2 14.5 63.7 LegendAA
> 0 °C11 11.7 22.4 29.1 31 30 31 31 30 31 26.8 16.5 301.6 LegendAA
> 10 °C0.30 0.40 5 16.5 29 29.9 31 31 29.7 21.9 6.4 1 202.2 LegendAA
> 20 °C0 0 0.60 2.8 12.6 23.9 29.8 28 15.3 3.4 0.20 0 116.5 LegendAA
> 30 °C0 0 0 0.07 0.55 2.2 4.7 2.4 0.40 0 0 0 10.3 LegendAA
> 35 °C0 0 0 0 0 0 0.23 0.07 0 0 0 0 0.30 LegendAA
Days with Minimum Temperature:
> 0 °C1.4 1.6 5.6 17.4 29.7 30 31 31 29.7 25.1 12.1 3 217.5 LegendAA
<= 2 °C30.5 27.7 28.3 18 3.9 0.07 0 0 1.2 11 22.6 30.2 173.4 LegendAA
<= 0 °C29.6 26.7 25.4 12.6 1.3 0 0 0 0.33 5.9 17.9 28 147.8 LegendAA
< -2 °C27.5 23.7 20 6.1 0.10 0 0 0 0 1.8 10.9 23 113 LegendAA
< -10 °C15.7 13.3 5.9 0.21 0 0 0 0 0 0 0.70 9.2 45 LegendAA
< -20 °C2.9 1.8 0.20 0 0 0 0 0 0 0 0 0.53 5.4 LegendAA
< - 30 °C0.10 0 0 0 0 0 0 0 0 0 0 0 0.10 LegendAA
Days with Rainfall:
>= 0.2 mm4.8 4.1 7.6 11 13 12.2 10.8 11.5 12.3 12.5 11.1 6.8 117.6 LegendAA
>= 5 mm1.8 1.6 2.8 4.2 5.1 5.4 4.4 5 4.9 4.3 4.4 2.7 46.5 LegendAA
>= 10 mm0.87 0.77 1.4 1.9 2.8 2.8 2.6 2.9 2.7 2.2 2.1 1.1 24.1 LegendAA
>= 25 mm0.10 0.13 0.13 0.28 0.24 0.47 0.77 0.77 0.60 0.33 0.30 0.10 4.2 LegendAA
Days With Snowfall:
>= 0.2 cm15 11.2 9.3 3.3 0.10 0 0 0 0 0.87 5.7 12.6 58 LegendAA
>= 5 cm2.3 1.8 1.8 0.55 0 0 0 0 0 0.10 0.90 2.5 10 LegendAA
>= 10 cm0.77 0.53 0.63 0.17 0 0 0 0 0 0.03 0.20 0.77 3.1 LegendAA
>= 25 cm0 0 0 0 0 0 0 0 0 0 0 0.10 0.10 LegendAA
Days with Precipitation:
>= 0.2 mm17.8 13.8 14.7 13.1 13 12.2 10.8 11.5 12.3 12.8 15.3 16.8 164.1 LegendAA
>= 5 mm4.2 3.5 4.6 4.9 5.1 5.4 4.4 5 4.9 4.3 5.4 5.1 56.6 LegendAA
>= 10 mm1.7 1.4 2.1 2.2 2.8 2.8 2.6 2.9 2.7 2.3 2.5 2.1 27.9 LegendAA
>= 25 mm0.13 0.20 0.20 0.28 0.24 0.47 0.77 0.77 0.60 0.33 0.33 0.27 4.6 LegendAA
Days with Snow Depth:
>= 1 cm26.8 25.5 19.3 2 0 0 0 0 0 0.28 5.3 20.8 99.9 LegendDD
>= 5 cm22.3 23.7 16.6 0.58 0 0 0 0 0 0.06 1.9 14.1 79.1 LegendDD
>= 10 cm17.1 20.2 11.9 0.21 0 0 0 0 0 0 0.60 9 58.9 LegendDD
>= 20 cm8.9 9.4 5.8 0 0 0 0 0 0 0 0 2.3 26.4 LegendDD
Degree Days:
Above 24 °C0 0 0 0 0.2 2 8.4 4.2 0.7 0 0 0 15.5 LegendAA
Above 18 °C0 0 0 1.3 15 47.8 101.2 78.1 21.4 0.5 0 0 265.2 LegendAA
Above 15 °C0 0 0.5 4.8 38.7 108.4 187.5 158.3 57.2 4.2 0.2 0 559.7 LegendAA
Above 10 °C0 0 3.6 23.2 123.7 246.6 342 311.3 167.5 39.6 3.9 0.2 1261.7 LegendAA
Above 5 °C0.7 0.8 17.3 84.8 260.8 396 497 466.2 312.4 131.4 28.5 3.2 2199.1 LegendAA
Above 0 °C9.2 13.3 63.5 202.5 415.1 546 652 621.2 462.4 275.3 104.2 23.8 3388.4 LegendAA
Below 0 °C218.2 172.3 79.7 6.9 0 0 0 0 0 0.3 21.9 128.7 628 LegendAA
Below 5 °C364.7 301.2 188.6 39.2 0.8 0 0 0 0 11.3 96.1 263.1 1265 LegendAA
Below 10 °C519 441.7 329.9 127.7 18.7 0.6 0 0 5.1 74.5 221.6 415.2 2153.9 LegendAA
Below 15 °C674 583 481.8 259.3 88.7 12.3 0.4 2 44.8 194.2 367.8 570 3278.4 LegendAA
Below 18 °C767 667.8 574.3 345.8 157.9 41.8 7.2 14.8 99 283.4 457.7 663 4079.6 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