Weather in Simcoe County

Calculated from weather data of Lester B Pearson International Airport (CYYZ) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-1.7	0.0	1.6	-4.9	0.2	1.9
February	1.5	4.7	3.1	0.2	-2.1	0.6
March	5.6	8.0	4.2	5.5	9.1	7.0
April	11.7		14.0	11.0	13.1	10.3
May	19.0		19.3	20.8	19.5	17.0
June	24.9		23.8	25.6	26.8	26.3
July	27.6		26.8	28.0	25.6	29.8
August	26.5		24.6	27.1	28.1	27.0
September	22.9		23.1	22.6	22.6	22.1
October	15.6		16.6	15.5	17.1	13.6
November	7.7		8.0	9.5	8.3	11.1
December	2.8		5.4	2.3	4.7	2.6
Average	12.6	4.2	14.3	14.2	14.5	14.1

30th highest temperature of Canada

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-7.8	-4	-2	-12	-5	-4
February	-6.3	-3	-5	-8	-8	-6
March	-3.9	0	-2	-2	-2	0
April	3.0		5	3	4	2
May	9.3		9	11	9	8
June	15.2		16	15	17	15
July	18.4		18	18	18	20
August	17.5		16	18	20	17
September	14.0		15	14	14	13
October	8.0		10	7	11	6
November	0.7		0	2	1	4
December	-3.3		1	-2	-1	-3
Average	4.8	-3.5	6.6	5.6	6.4	6.1

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	0	9	17	19	22
25 °C or warmer	0	57	80	73	78
20 °C or warmer	0	137	135	137	120
0 °C or colder	55	90	102	102	97

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	24.1	25	35	19	13	18
February	21.2	10	22	27	21	19
March	17.8	19	23	25	7	15
April	15.1		14	17	14	9
May	11.0		10	9	7	11
June	6.5		11	7	5	2
July	5.6		9	7	9	3
August	4.6		7	9	2	3
September	5.0		2	11	5	2
October	13.5		11	10	18	14
November	14.6		10	18	13	14
December	21.8		29	17	16	24
Average	13.3	18.2	14.3	13.8	10.1	10.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	18.9	19	17	19	17	19
February	20.1	18	22	21	19	20
March	20.6	19	21	20	21	21
April	19.9		19	20	18	22
May	16.7		14	16	16	17
June	17.1		16	17	18	17
July	15.5		14	17	15	16
August	16.0		17	16	14	17
September	16.1		14	15	18	17
October	17.3		18	15	15	17
November	18.8		19	19	18	19
December	18.2		16	19	19	20
Average	17.9	18.4	16.9	17.6	17.1	18.4

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	W	NW	NW	NW	S
February	W	W	W	W	SW
March	W	NW	W	W	SE
April		W	W	NW	NW
May		NW	S	W	N
June		N	W	SW	W
July		W	W	N	W
August		NW	W	SW	W
September		SE	NW	W	SW
October		W	SW	N	W
November		W	W	W	W
December		NW	W	W	W

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Simcoe County weather Q&A

What is the warmest month in Simcoe County?

The warmest month is July with an average temperature of 28 °C over the past years.

What is the coldest month in Simcoe County?

The coldest month is January with an average daytime temperature of 0 °C in the past few years.

Which month is the wettest in Simcoe County?

Chance of precipitation is the highest in January with a probability of around 24.1 %.

Which month is the driest in Simcoe County?

The least rainfall and snow can be expected in August. The probability is about 4.6 %.