Climate Phoenix Sky Harbor International Airport 2020-2024

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

Calculated from historical METAR data of Phoenix Sky Harbor International Airport (KPHX) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	97.9	93	97	100	99	97
February	98.0	98	100	99	100	99
March	99.2	99	98	100	100	97
April	99.8		100	100	100	100
May	99.9		100	100	100	100
June	99.8		100	100	100	100
July	99.5		100	100	98	100
August	100.0		100	100	100	100
September	99.8		100	100	100	100
October	99.4		100	100	100	100
November	99.8		100	99	100	100
December	97.7		95	92	97	99
Average	99.0	96.5	99.1	99.4	99.4	99.4

7th best VFR conditions of United States

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	99.4	98	99	100	100	99
February	99.5	99	100	100	100	99
March	99.7	100	100	100	100	99
April	99.8		100	100	100	100
May	99.9		100	100	100	100
June	99.9		100	100	100	100
July	99.8		100	100	100	100
August	100.0		100	100	100	100
September	99.9		100	100	100	100
October	99.5		100	100	100	100
November	99.8		100	99	100	100
December	99.1		99	98	98	100
Average	99.6	99.0	99.7	99.7	99.7	99.7

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	19.6	19	18	21	20	20
February	21.4	22	20	22	23	22
March	25.4	25	23	27	25	24
April	31.5		31	32	32	30
May	35.1		36	36	35	37
June	40.6		39	41	42	40
July	42.1		46	42	40	43
August	41.2		43	40	40	44
September	38.4		39	39	38	40
October	32.0		34	31	31	35
November	25.8		27	22	28	27
December	19.9		22	17	21	20
Average	30.0	21.9	31.4	31.2	31.1	31.8

16th highest temperature of United States

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	8.2	8	7	9	8	8
February	9.4	11	8	9	10	9
March	12.6	12	11	13	12	13
April	17.3		16	17	18	17
May	21.3		22	22	21	23
June	26.9		25	28	29	27
July	30.5		33	31	29	32
August	29.8		32	29	29	32
September	26.5		27	28	26	27
October	19.2		21	20	18	20
November	13.3		15	10	15	14
December	8.7		10	8	10	7
Average	17.7	10.4	18.9	18.9	18.6	18.8

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	1.9	5	5	0	3	1
February	2.7	3	1	1	0	2
March	1.5	3	3	1	0	3
April	0.0		0	0	0	0
May	0.1		0	0	0	0
June	0.1		0	0	1	0
July	0.8		0	1	3	0
August	0.4		0	1	1	0
September	1.1		1	1	3	0
October	0.7		0	0	0	0
November	0.5		1	0	0	0
December	2.1		2	4	3	1
Average	1.2	3.5	1.0	0.7	1.1	0.5

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	5	5	5	5	4
February	6.1	6	8	6	6	6
March	6.2	6	6	7	7	6
April	6.5		6	7	7	6
May	6.4		7	6	6	6
June	6.1		6	6	7	6
July	6.2		6	6	6	6
August	5.7		6	5	6	6
September	5.6		6	5	5	6
October	5.6		5	6	6	5
November	4.8		5	6	5	4
December	4.5		4	4	4	5
Average	5.7	5.7	5.9	5.9	5.7	5.4

16th highest wind speed of United States

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	120°	147°	068°	109°	110°
February	175°	158°	101°	264°	098°
March	160°	208°	219°	201°	167°
April		226°	219°	208°	197°
May		170°	228°	194°	240°
June		188°	165°	215°	200°
July		260°	255°	163°	252°
August		187°	210°	133°	265°
September		159°	124°	129°	139°
October		131°	101°	121°	137°
November		098°	129°	095°	175°
December		096°	148°	118°	075°

Prevailing wind direction

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