Weather in Northwest Territories

Calculated from weather data of Yellowknife International Airport (CYZF) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-20.1	-23.0	-15.1	-25.6	-18.8	-22.1
February	-20.7	-16.9	-21.0	-23.0	-24.6	-19.8
March	-10.0	-10.8	-12.5	-11.0	-11.1	-13.5
April	0.4	4.0	3.5	-1.6	-3.3	-3.5
May	12.0		18.6	11.0	8.8	8.0
June	19.3		20.5	21.6	19.8	18.3
July	22.1		24.5	22.3	22.1	21.0
August	19.6		21.6	21.3	19.0	18.8
September	12.6		15.1	15.3	12.4	12.0
October	2.9		5.0	4.5	5.2	0.6
November	-10.9		-6.0	-9.6	-7.0	-11.3
December	-18.1		-10.5	-21.1	-24.3	-18.1
Average	-1.7	-11.0	4.0	1.5	0.3	-1.6

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	-27.0	-31	-20	-32	-26	-29
February	-29.4	-25	-31	-33	-32	-27
March	-22.6	-22	-23	-22	-23	-25
April	-11.4	-7	-6	-13	-13	-13
May	0.9		6	1	-2	-2
June	9.2		10	11	9	8
July	12.4		14	13	12	13
August	10.8		12	12	10	12
September	4.9		8	6	6	4
October	-3.8		0	-2	1	-4
November	-16.3		-12	-14	-14	-19
December	-25.0		-17	-29	-30	-24
Average	-10.8	-22.9	-5.2	-8.3	-9.6	-9.2

72nd lowest temperature of Canada

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	0	0	3	0
25 °C or warmer	0	16	8	12	5
20 °C or warmer	0	79	68	44	40
0 °C or colder	120	189	197	209	225

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	46.6	46	61	52	36	44
February	35.1	42	20	29	20	40
March	27.0	20	19	44	25	30
April	14.2	2	20	4	30	22
May	7.7		3	12	10	7
June	12.0		13	3	11	11
July	10.2		3	11	6	15
August	9.7		3	7	8	17
September	11.3		9	8	10	13
October	28.3		22	37	16	47
November	52.5		59	61	32	51
December	44.1		51	50	51	33
Average	21.6	24.8	18.9	21.4	18.1	24.0

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	12.5	13	13	13	12	12
February	12.9	14	12	12	14	14
March	15.5	16	15	14	16	17
April	16.3	16	18	16	18	17
May	17.4		18	20	18	17
June	16.7		16	15	17	20
July	15.2		14	14	16	16
August	15.5		14	14	16	18
September	17.2		17	19	17	16
October	17.6		19	21	17	20
November	15.2		17	16	17	14
December	12.3		15	12	12	11
Average	15.6	15.0	15.7	15.8	16.2	16.4

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

Prevailing wind direction

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

Northwest Territories weather Q&A

What is the warmest month in Northwest Territories?

The warmest month is July with an average temperature of 22 °C over the past years.

What is the coldest month in Northwest Territories?

The coldest month is January with an average daytime temperature of -20 °C in the past few years.

Which month is the wettest in Northwest Territories?

Chance of precipitation is the highest in November with a probability of around 52.5 %.

Which month is the driest in Northwest Territories?

The least rainfall and snow can be expected in May. The probability is about 7.8 %.