Weather in Cornwallis

Calculated from weather data of Brandon Municipal Airport (CYBR) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	15.0	14.0	14.0	10.0	22.0	15.0
February	15.0	27.0	19.0	11.0	8.0	22.0
March	30.0	26.0	22.0	28.0	44.0	34.0
April	48.0		42.0	39.0	55.0	47.0
May	67.0		74.0	61.0	66.0	64.0
June	77.0		80.0	75.0	79.0	78.0
July	80.0		76.0	78.0	83.0	80.0
August	78.0		78.0	79.0	77.0	79.0
September	69.0		73.0	71.0	75.0	68.0
October	50.0		50.0	54.0	59.0	45.0
November	31.0		35.0	31.0	37.0	36.0
December	21.0		29.0	15.0	15.0	27.0
Average	45.0	23.0	49.0	47.0	52.0	50.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	-1.0	1	0	-10	5	1
February	-5.0	13	-5	-14	-10	-1
March	11.0	9	-1	11	19	14
April	25.0		24	25	25	24
May	40.0		46	41	36	39
June	52.0		57	52	53	51
July	55.0		51	56	57	58
August	51.0		52	54	52	53
September	44.0		47	44	44	41
October	30.0		32	32	35	25
November	15.0		20	15	18	15
December	4.0		11	1	-3	8
Average	24.0	7.0	28.0	27.0	28.0	27.0

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
86 °F or warmer	0	10	9	20	4
77 °F or warmer	0	67	54	73	65
68 °F or warmer	0	126	108	128	115
32 °F or colder	87	189	179	198	207

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	33.1	52	25	53	24	35
February	25.9	26	19	33	29	25
March	16.3	27	12	27	9	14
April	12.6		18	30	10	13
May	8.8		8	24	7	9
June	7.5		6	12	7	5
July	3.4		5	6	4	4
August	5.6		9	2	9	4
September	7.5		7	5	1	4
October	12.4		21	7	6	14
November	24.9		16	35	16	16
December	23.8		7	35	33	28
Average	16.1	34.5	12.3	20.4	11.5	12.9

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 (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	11.2	11	9	12	11	11
February	11.4	12	10	12	12	11
March	11.9	13	12	11	13	13
April	13.6		14	16	13	14
May	12.7		13	14	12	13
June	11.4		8	13	11	13
July	9.8		9	10	9	11
August	9.4		9	9	11	9
September	11.7		10	12	12	13
October	13.0		11	13	12	15
November	11.8		12	14	11	13
December	11.0		10	12	13	11
Average	11.6	12.2	10.5	12.4	11.5	12.1

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	NW	W	NW	W	NW
February	N	W	NW	W	W
March	N	NE	NW	W	NW
April		NE	NE	N	NW
May		E	NE	N	E
June		E	NW	NW	W
July		NW	NW	NE	W
August		NW	NW	NW	W
September		E	NW	W	W
October		N	NW	N	W
November		W	NW	W	W
December		NW	N	W	W

Prevailing wind direction

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

Cornwallis weather Q&A

What is the warmest month in Cornwallis?

The warmest month is July with an average temperature of 80 °F over the past years.

What is the coldest month in Cornwallis?

The coldest month is January with an average daytime temperature of 15 °F in the past few years.

Which month is the wettest in Cornwallis?

Chance of precipitation is the highest in January with a probability of around 33.2 %.

Which month is the driest in Cornwallis?

The least rainfall and snow can be expected in July. The probability is about 3.5 %.