Climate Stinson Municipal Airport 2020-2024

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

Calculated from historical METAR data of Stinson Municipal Airport (KSSF) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	74.8	64	73	80	75	72
February	63.1	73	68	74	53	70
March	71.4	64	67	88	82	62
April	71.0		61	67	68	67
May	75.0		77	77	68	86
June	79.9		79	87	76	81
July	82.4		85	86	71	80
August	87.5		92	85	85	92
September	85.5		92	90	91	79
October	79.9		74	91	87	80
November	69.9		62	57	85	74
December	68.8		76	49	60	83
Average	75.1	67.0	75.6	78.7	75.3	77.3

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	87.9	84	81	91	88	86
February	84.3	90	87	90	80	89
March	90.4	90	88	99	94	86
April	92.4		88	95	90	86
May	94.8		94	97	91	100
June	96.8		96	99	97	98
July	96.8		99	100	89	98
August	98.1		99	97	98	98
September	97.3		100	98	98	98
October	93.3		91	98	95	92
November	87.4		83	81	97	87
December	86.8		89	76	85	93
Average	92.0	87.7	91.5	94.3	92.0	92.7

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	19.3	17	22	20	18	20
February	21.1	23	22	20	16	20
March	25.6	25	26	28	25	26
April	28.5		27	32	28	27
May	32.1		30	37	30	32
June	35.1		36	38	34	32
July	36.9		39	39	33	36
August	37.0		40	36	35	37
September	34.3		37	34	36	31
October	29.1		29	30	31	29
November	22.8		22	21	25	25
December	20.6		21	21	26	20
Average	27.7	21.4	29.3	29.9	28.2	27.8

38th 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	7.0	5	9	6	6	9
February	9.0	11	10	6	5	7
March	13.6	14	15	11	10	16
April	16.5		16	20	17	15
May	20.8		20	23	21	19
June	23.6		23	24	25	22
July	24.7		25	25	25	24
August	24.7		26	25	25	22
September	22.7		23	22	23	20
October	16.9		18	17	19	15
November	11.5		13	12	12	13
December	8.7		9	14	15	5
Average	15.9	9.9	17.1	17.1	16.7	15.4

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	3.7	7	3	1	5	4
February	4.2	1	6	7	8	3
March	2.9	3	7	0	1	4
April	3.4		4	4	2	6
May	3.6		5	0	6	2
June	1.6		0	1	2	2
July	1.2		0	0	6	1
August	2.1		2	3	1	1
September	3.1		0	0	0	3
October	4.0		8	2	2	1
November	5.6		6	12	2	7
December	4.6		5	4	2	3
Average	3.3	3.7	3.8	2.6	2.9	3.0

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 (knots)

Month	Average	2024	2023	2022	2021	2020
January	6.7	7	6	6	7	7
February	7.4	7	8	8	7	8
March	7.9	7	8	9	9	8
April	8.3		8	10	8	8
May	7.9		6	9	8	8
June	7.2		7	7	7	7
July	6.7		7	7	6	7
August	6.6		7	7	6	7
September	6.2		6	5	6	8
October	6.7		7	7	6	6
November	6.2		6	7	6	6
December	6.2		6	6	6	6
Average	7.1	7.2	6.7	7.5	6.8	7.1

38th 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	022°	039°	009°	001°	120°
February	128°	078°	023°	053°	040°
March	121°	121°	152°	107°	114°
April		101°	129°	100°	094°
May		117°	147°	111°	130°
June		152°	141°	135°	133°
July		155°	151°	132°	138°
August		141°	139°	141°	144°
September		140°	130°	096°	050°
October		111°	129°	126°	108°
November		049°	081°	091°	090°
December		087°	117°	161°	212°

Prevailing wind direction

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