Climate Nelson Automatic Weather Reporting System 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Nelson Automatic Weather Reporting System (CWNM) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	1.6	0	3	1	3	2
February	3.2	5	4	4	3	5
March	9.2	10	9	9	11	9
April	14.1		13	12	17	15
May	21.4		24	17	21	20
June	24.5		27	22	28	22
July	30.5		31	31	34	27
August	29.6		30	32	27	30
September	22.3		22	25	21	24
October	13.2		14	17	13	13
November	5.2		6	2	6	6
December	1.3		3	-1	0	3
Average	13.6	5.1	15.4	14.7	15.2	14.6

18th 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	-3.5	-3	-1	-3	-2	-2
February	-4.5	0	-3	-4	-5	-2
March	-1.3	0	-2	0	0	-1
April	2.2		2	1	2	2
May	7.1		9	6	6	7
June	10.0		11	10	9	10
July	13.2		13	13	15	12
August	13.4		14	14	13	13
September	9.5		10	9	9	10
October	3.9		5	5	4	4
November	0.3		0	-3	1	1
December	-3.7		0	-5	-5	-1
Average	3.6	-2.8	4.9	4.0	4.1	4.3

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

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 (knots)

Month	Average	2024	2023	2022	2021	2020
January	5.0	6	5	5	4	5
February	5.9	5	6	6	7	5
March	5.1	4	5	5	5	6
April	5.3		5	7	5	5
May	4.8		4	5	5	6
June	4.9		4	5	4	5
July	4.7		5	4	4	5
August	4.6		4	5	5	5
September	4.6		4	5	4	4
October	4.6		4	4	4	5
November	5.1		5	6	5	5
December	5.0		4	6	6	5
Average	4.9	4.9	4.7	5.0	4.8	5.1

18th highest wind speed of Canada

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	355°	306°	256°	230°	268°
February	291°	300°	273°	263°	261°
March	329°	021°	262°	266°	284°
April		275°	029°	345°	283°
May		339°	293°	355°	324°
June		270°	313°	335°	303°
July		292°	295°	290°	279°
August		271°	302°	290°	269°
September		284°	303°	291°	300°
October		345°	278°	244°	244°
November		265°	288°	253°	265°
December		067°	266°	249°	251°

Prevailing wind direction

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