Weather in New Brunswick

Calculated from weather data of Greater Moncton Roméo LeBlanc International Airport (CYQM) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-2.3	-2.3	0.4	-4.5	-2.5	-2.6
February	-1.1	0.5	-3.7	-1.8	-2.3	-1.3
March	2.7	4.5	2.1	3.9	4.9	2.3
April	9.1	9.8	10.0	9.5	9.4	7.5
May	16.2		16.3	18.0	16.1	16.6
June	21.7		20.0	21.1	24.1	23.6
July	25.8		27.1	26.3	22.8	25.6
August	25.1		22.6	25.1	26.0	26.0
September	20.6		21.3	20.1	20.3	21.1
October	14.6		15.6	16.8	14.9	13.5
November	6.4		5.0	8.3	7.2	9.0
December	0.9		3.1	2.6	1.5	4.0
Average	10.7	3.2	11.9	12.7	12.0	12.3

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	-10.2	-9	-6	-14	-7	-9
February	-10.1	-7	-13	-10	-9	-10
March	-6.7	-3	-5	-5	-6	-5
April	0.0	0	0	1	1	-1
May	4.5		4	6	4	5
June	10.6		11	11	13	11
July	14.9		18	15	14	15
August	14.5		14	16	15	14
September	10.3		12	10	12	10
October	5.3		7	6	7	4
November	-2.4		-3	0	-1	0
December	-7.7		-4	-3	-7	-4
Average	1.4	-5.3	3.1	3.0	3.0	2.5

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	5	7	5	12
25 °C or warmer	0	36	46	42	58
20 °C or warmer	0	108	102	101	108
0 °C or colder	86	145	123	139	154

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	37.5	30	44	43	39	42
February	29.8	28	29	33	30	28
March	28.5	43	32	29	20	29
April	22.6	18	11	34	35	12
May	18.0		23	12	16	14
June	16.6		35	18	6	8
July	10.6		13	10	18	15
August	10.7		21	19	5	5
September	12.4		18	10	15	15
October	13.8		25	9	9	9
November	23.5		22	15	30	16
December	26.2		27	40	18	34
Average	20.9	29.9	24.2	21.3	18.8	17.3

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	20.3	21	20	19	18	19
February	20.8	22	17	23	20	21
March	22.3	21	20	21	25	22
April	20.4	20	18	21	22	22
May	19.3		21	18	19	22
June	17.4		17	15	19	18
July	15.8		14	19	16	15
August	16.0		15	15	15	20
September	17.1		16	16	19	20
October	17.6		17	16	17	19
November	21.0		19	22	19	20
December	20.8		22	23	21	21
Average	19.1	20.8	17.7	18.5	19.0	19.6

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

Prevailing wind direction

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

New Brunswick weather Q&A

What is the warmest month in New Brunswick?

The warmest month is July with an average temperature of 26 °C over the past years.

What is the coldest month in New Brunswick?

The coldest month is January with an average daytime temperature of -2 °C in the past few years.

Which month is the wettest in New Brunswick?

Chance of precipitation is the highest in January with a probability of around 37.5 %.

Which month is the driest in New Brunswick?

The least rainfall and snow can be expected in July. The probability is about 10.6 %.