Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph

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Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
RICHMOND HILL

Symbol	Description
	Daily Maximum Temperature (°C)
	Daily Average Temperature (°C)
	Daily Minimum Temperature (°C)
	Precipitation (mm)

Normals 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.

RICHMOND HILL *
ONTARIO

43°52'38.094" N

79°26'52.074" W

240.00 m

6157012

* This station meets WMO standards for temperature and precipitation.

Temperature

1981 to 2010 Canadian Climate Normals station data
Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Daily Average (°C)	-6.2	-4.9	-0.3	6.9	13.3	18.7	21.4	20.3	15.9	9.1	3.1	-2.7	7.9	A
Standard Deviation	3.1	2.2	1.8	1.5	2.0	1.5	1.4	1.4	1.4	1.2	1.5	2.7	0.9	A
Daily Maximum (°C)	-2.2	-0.6	4.4	12.1	19.0	24.2	26.8	25.6	20.9	13.7	6.7	0.8	12.6	A
Daily Minimum (°C)	-10.2	-9.1	-5.0	1.7	7.7	13.1	15.9	15.1	10.8	4.5	-0.5	-6.1	3.2	A
Extreme Maximum (°C)	14.5	14.5	25.5	31.0	34.5	35.0	37.0	37.0	34.4	29.4	23.3	20.0
Date (yyyy/dd)	2005/ 13	1984/ 23	1998/ 30	1990/ 25	2006/ 29	1994/ 18	1988/ 07	2006/ 01	1973/ 03	1971/ 02	1961/ 03	1982/ 03
Extreme Minimum (°C)	-32.5	-29.0	-27.0	-15.0	-5.6	0.6	4.4	3.0	-3.3	-7.8	-15.5	-30.0
Date (yyyy/dd)	1981/ 04	1979/ 17	2003/ 03	1972/ 07	1966/ 07	1964/ 05	1968/ 30	1982/ 29	1965/ 27	1965/ 29	1987/ 21	1980/ 25

Precipitation

1981 to 2010 Canadian Climate Normals station data
Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Rainfall (mm)	25.2	26.3	33.6	62.5	81.5	80.2	83.5	89.2	88.4	67.6	73.5	33.1	744.6	A
Snowfall (cm)	37.1	31.7	25.2	7.6	0.1	0.0	0.0	0.0	0.0	1.5	13.7	33.7	150.6	A
Precipitation (mm)	62.3	58.0	58.8	70.1	81.6	80.2	83.5	89.2	88.4	69.1	87.2	66.8	895.2	A
Average Snow Depth (cm)	14	18	11	0	0	0	0	0	0	0	1	6	4	C
Median Snow Depth (cm)	14	18	10	0	0	0	0	0	0	0	0	5	4	C
Snow Depth at Month-end (cm)	17	16	2	0	0	0	0	0	0	0	1	9	4	C
Extreme Daily Rainfall (mm)	32.8	37.6	34.8	39.4	63.6	50.2	87.9	93.4	87.8	54.0	46.2	37.6
Date (yyyy/dd)	1995/ 14	1984/ 13	1974/ 04	2000/ 20	2000/ 12	1985/ 22	1971/ 26	1986/ 15	1986/ 10	1995/ 05	1962/ 09	1998/ 06
Extreme Daily Snowfall (cm)	22.4	23.0	20.2	23.9	2.6	0.0	0.0	0.0	0.0	14.2	17.2	40.4
Date (yyyy/dd)	1999/ 02	2001/ 08	2001/ 05	1976/ 25	2005/ 02	1959/ 01	1959/ 01	1959/ 01	1959/ 01	1962/ 25	1986/ 20	1992/ 10
Extreme Daily Precipitation (mm)	46.2	37.6	34.8	39.4	63.6	50.2	87.9	93.4	87.8	54.0	50.0	40.4
Date (yyyy/dd)	1968/ 14	1984/ 13	1974/ 04	2000/ 20	2000/ 12	1985/ 22	1971/ 26	1986/ 15	1986/ 10	1995/ 05	1999/ 02	1992/ 10
Extreme Snow Depth (cm)	52	55	56	18	0	0	0	0	0	9	16	45
Date (yyyy/dd)	1999/ 15	1982/ 06	1982/ 10	1987/ 01	1981/ 01	1981/ 01	1981/ 01	1981/ 01	1981/ 01	1981/ 23	1986/ 21	1992/ 12

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Maximum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
<= 0 °C	19.0	14.9	7.6	0.65	0.0	0.0	0.0	0.0	0.0	0.0	2.5	13.4	58.0	A
> 0 °C	12.0	13.4	23.4	29.4	31.0	30.0	31.0	31.0	30.0	31.0	27.5	17.7	307.2	A
> 10 °C	0.38	0.50	5.4	17.5	29.3	29.9	31.0	31.0	29.7	22.4	7.5	1.2	205.7	A
> 20 °C	0.0	0.0	0.65	3.1	12.2	24.1	29.9	28.3	16.7	3.5	0.19	0.0	118.7	A
> 30 °C	0.0	0.0	0.0	0.08	0.40	3.2	5.5	2.9	0.54	0.0	0.0	0.0	12.6	A
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.31	0.12	0.0	0.0	0.0	0.0	0.43	A

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Minimum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
> 0 °C	1.7	1.7	5.5	18.1	29.8	30.0	31.0	31.0	29.8	25.8	12.7	3.9	220.8	A
<= 2 °C	30.5	27.6	28.3	17.4	3.9	0.0	0.0	0.0	0.85	10.4	22.1	29.9	171.0	A
<= 0 °C	29.4	26.5	25.5	11.9	1.2	0.0	0.0	0.0	0.23	5.2	17.4	27.1	144.4	A
< -2 °C	26.4	23.2	19.9	5.4	0.0	0.0	0.0	0.0	0.0	1.3	10.0	21.6	107.7	A
< -10 °C	14.6	12.1	5.7	0.15	0.0	0.0	0.0	0.0	0.0	0.0	0.65	7.7	40.9	A
< -20 °C	3.0	1.2	0.19	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.31	4.7	A
< - 30 °C	0.08	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.08	A

Days with Rainfall

1981 to 2010 Canadian Climate Normals station data
Days with Rainfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	4.9	4.3	7.4	11.7	13.6	11.9	11.3	11.2	12.4	13.3	11.4	7.0	120.2	A
>= 5 mm	1.7	1.6	2.4	4.3	5.5	5.2	4.6	4.6	5.1	4.4	4.8	2.5	46.7	A
>= 10 mm	0.81	0.92	1.1	1.9	2.8	2.7	2.6	2.9	3.0	2.0	2.7	1.1	24.5	A
>= 25 mm	0.15	0.15	0.04	0.31	0.32	0.54	0.69	0.77	0.73	0.27	0.38	0.04	4.4	A

Days With Snowfall

1981 to 2010 Canadian Climate Normals station data
Days With Snowfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 cm	15.3	11.3	9.0	3.2	0.12	0.0	0.0	0.0	0.0	0.62	5.3	11.6	56.5	A
>= 5 cm	2.2	1.9	1.6	0.54	0.0	0.0	0.0	0.0	0.0	0.12	0.96	2.0	9.3	A
>= 10 cm	0.58	0.62	0.54	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.23	0.73	2.7	A
>= 25 cm	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.08	0.08	A

Days with Precipitation

1981 to 2010 Canadian Climate Normals station data
Days with Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	18.3	13.9	14.4	13.6	13.6	11.9	11.3	11.2	12.4	13.4	15.2	16.2	165.2	A
>= 5 mm	4.0	3.5	4.1	5.0	5.5	5.2	4.6	4.6	5.1	4.5	5.7	4.6	56.3	A
>= 10 mm	1.5	1.7	1.7	2.0	2.8	2.7	2.6	2.9	3.0	2.2	3.1	2.0	28.1	A
>= 25 mm	0.15	0.23	0.04	0.31	0.32	0.54	0.69	0.77	0.73	0.27	0.46	0.15	4.7	A

Days with Snow Depth

1981 to 2010 Canadian Climate Normals station data
Days with Snow Depth
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 1 cm	26.9	25.9	19.7	2.2	0.0	0.0	0.0	0.0	0.0	0.22	4.6	20.5	100.1	C
>= 5 cm	22.5	24.4	16.7	0.96	0.0	0.0	0.0	0.0	0.0	0.04	1.8	13.1	79.4	C
>= 10 cm	17.3	21.4	13.0	0.16	0.0	0.0	0.0	0.0	0.0	0.0	0.68	7.8	60.3	C
>= 20 cm	8.9	10.3	7.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	2.2	28.4	C

Degree Days

1981 to 2010 Canadian Climate Normals station data
Degree Days
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Above 24 °C	0	0	0	0	0.4	3.6	11.9	5.7	0.7	0	0	0	22.3	A
Above 18 °C	0	0	0.1	1.7	13.3	56.1	110.9	84.9	24.8	0.9	0	0	292.6	A
Above 15 °C	0	0	0.5	5.3	35.9	119.2	198.5	166.8	65.8	5.8	0	0	597.7	A
Above 10 °C	0	0	3.8	25.2	120.7	259.7	353	320.5	181.5	42	3.5	0.3	1310.2	A
Above 5 °C	0.9	0.9	18.1	89.9	259	409.4	508	475.5	327.1	136.4	31.1	4.1	2260.5	A
Above 0 °C	11.8	15.1	67.1	212	413.6	559.4	663	630.5	477.1	283	111.8	29.8	3474.2	A
Below 0 °C	204.4	152.1	75.9	4.9	0	0	0	0	0	0.1	17.9	112.9	568.2	A
Below 5 °C	348.5	279	182	32.8	0.5	0	0	0	0	8.5	87.1	242.1	1180.6	A
Below 10 °C	502.6	419.3	322.7	118.1	17.2	0.3	0	0	4.4	69	209.6	393.4	2056.5	A
Below 15 °C	657.6	560.4	474.4	248.2	87.3	9.8	0.4	1.3	38.7	187.9	356.1	548.1	3170.2	A
Below 18 °C	750.6	645.1	566.9	334.6	157.7	36.7	5.8	12.4	87.7	276	446.1	641.1	3960.7	A

Frost-Free

1981 to 2010 Canadian Climate Normals station data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 05	A
Average Date of First Fall Frost	Oct 10	A
Average Length of Frost-Free Period	157 Days	A

1981 to 2010 Canadian Climate Normals station data
Frost-Free
Probability of last temperature in spring of 0 °C or lower on or after indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	May 20	May 12	May 09	May 04	May 02	Apr 29	Apr 25
Probability of first temperature in fall of 0 °C or lower on or before indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	Sep 25	Oct 01	Oct 03	Oct 07	Oct 13	Oct 17	Oct 21
Probability of frost-free period equal to or less than indicated period (Days)	10%	25%	33%	50%	66%	75%	90%
Days	131	146	152	157	160	162	172

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

Station / Element Metadata

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a station with 30 years of record between 1981 and 2010 with no missing years would be a more reliable normal than a station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

RICHMOND HILL

Province/Territory

Latitude (dd mm):

43 52 N

Country

CAN

Longitude (ddd mm):

79 27 W

Time Zone

EST

Latitude (decimal degrees):

43.88 N

Climate ID:

6157012

Longitude (decimal degrees):

79.45 W

WMO ID:

Elevation (m):

240

TC ID:

Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Daily Average (°C)	1981	2006	26	1	9465	100
Standard Deviation	1981	2006	26	1	9465	100
Daily Maximum (°C)	1981	2006	26	1	9465	100
Daily Minimum (°C)	1981	2006	26	1	9465	100
Extreme Maximum (°C)	1959	2006			17317	100
Extreme Minimum (°C)	1959	2006			17320	100

Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Rainfall (mm)	1981	2006	26	1	9465	100
Snowfall (cm)	1981	2006	26	1	9465	100
Precipitation (mm)	1981	2006	26	1	9465	100
Average Snow Depth (cm)	1981	2006	26	4	8930	96.5
Median Snow Depth (cm)	1981	2006	26	4	8930	96.5
Snow Depth at Month-end (cm)	1981	2006	26	2	304	100
Extreme Daily Rainfall (mm)	1959	2006			17319	100
Extreme Daily Snowfall (cm)	1959	2006			17319	100
Extreme Daily Precipitation (mm)	1959	2006			17318	100
Extreme Snow Depth (cm)	1980	2006			9067	97

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Maximum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
<= 0 °C	1981	2006	26	1	9465	100
> 0 °C	1981	2006	26	1	9465	100
> 10 °C	1981	2006	26	1	9465	100
> 20 °C	1981	2006	26	1	9465	100
> 30 °C	1981	2006	26	1	9465	100
> 35 °C	1981	2006	26	1	9465	100

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Minimum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
> 0 °C	1981	2006	26	1	9465	100
<= 2 °C	1981	2006	26	1	9465	100
<= 0 °C	1981	2006	26	1	9465	100
< -2 °C	1981	2006	26	1	9465	100
< -10 °C	1981	2006	26	1	9465	100
< -20 °C	1981	2006	26	1	9465	100
< - 30 °C	1981	2006	26	1	9465	100

Days with Rainfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Rainfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2006	26	1	9465	100
>= 5 mm	1981	2006	26	1	9465	100
>= 10 mm	1981	2006	26	1	9465	100
>= 25 mm	1981	2006	26	1	9465	100

Days With Snowfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days With Snowfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 cm	1981	2006	26	1	9465	100
>= 5 cm	1981	2006	26	1	9465	100
>= 10 cm	1981	2006	26	1	9465	100
>= 25 cm	1981	2006	26	1	9465	100

Days with Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2006	26	1	9465	100
>= 5 mm	1981	2006	26	1	9465	100
>= 10 mm	1981	2006	26	1	9465	100
>= 25 mm	1981	2006	26	1	9465	100

Days with Snow Depth

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Snow Depth
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 1 cm	1981	2006	26	4	8700	94
>= 5 cm	1981	2006	26	4	8700	94
>= 10 cm	1981	2006	26	4	8700	94
>= 20 cm	1981	2006	26	4	8700	94

Degree Days

1981 to 2010 Canadian Climate Normals Element Metadata
Degree Days
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Above 24 °C	1981	2006	26	1	9465	100
Above 18 °C	1981	2006	26	1	9465	100
Above 15 °C	1981	2006	26	1	9465	100
Above 10 °C	1981	2006	26	1	9465	100
Above 5 °C	1981	2006	26	1	9465	100
Above 0 °C	1981	2006	26	1	9465	100
Below 0 °C	1981	2006	26	1	9465	100
Below 5 °C	1981	2006	26	1	9465	100
Below 10 °C	1981	2006	26	1	9465	100
Below 15 °C	1981	2006	26	1	9465	100
Below 18 °C	1981	2006	26	1	9465	100

Frost-Free

1981 to 2010 Canadian Climate Normals Element Metadata
Frost-Free
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Date of Last Spring Frost	1981	2006	25	0	25	96.2
Average Date of First Fall Frost	1981	2006	25	0	25	96.2
Average Length of Frost-Free Period	1981	2006	25	0	25	96.2
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1960	2006	46	1	45	95.7
25 %	1960	2006	46	1	45	95.7
33 %	1960	2006	46	1	45	95.7
50 %	1960	2006	46	1	45	95.7
66 %	1960	2006	46	1	45	95.7
75 %	1960	2006	46	1	45	95.7
90 %	1960	2006	46	1	45	95.7
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1960	2006	46	1	45	95.7
25 %	1960	2006	46	1	45	95.7
33 %	1960	2006	46	1	45	95.7
50 %	1960	2006	46	1	45	95.7
66 %	1960	2006	46	1	45	95.7
75 %	1960	2006	46	1	45	95.7
90 %	1960	2006	46	1	45	95.7
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1960	2006	46	1	45	95.7
25 %	1960	2006	46	1	45	95.7
33 %	1960	2006	46	1	45	95.7
50 %	1960	2006	46	1	45	95.7
66 %	1960	2006	46	1	45	95.7
75 %	1960	2006	46	1	45	95.7
90 %	1960	2006	46	1	45	95.7

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Date modified:: 2024-03-27

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
RICHMOND HILL

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate NormalsRICHMOND HILL

Page details

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
RICHMOND HILL