Climate Centre Hospitalier Heliport 2020-2024

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

Calculated from historical METAR data of Saint-Dizier – Robinson Air Base (LFSI) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	41.0	50	34	39	38	51
February	61.6	52	68	57	75	64
March	74.0	76	76	92	78	75
April	85.4		75	78	91	96
May	82.9		78	94	79	93
June	86.4		95	86	81	84
July	87.3		85	98	74	91
August	87.6		82	94	77	93
September	84.2		91	84	81	85
October	69.3		80	78	75	59
November	49.8		44	55	25	76
December	39.8		37	36	36	41
Average	72.8	60.6	74.1	79.3	70.8	78.8

53rd best VFR conditions of France

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km 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	74.4	84	88	63	67	77
February	86.2	85	86	86	90	91
March	92.1	93	96	99	96	94
April	95.5		93	92	97	99
May	92.8		91	99	96	98
June	94.8		98	97	89	97
July	95.1		95	100	90	97
August	95.9		93	98	93	99
September	94.8		98	94	94	95
October	88.5		96	92	89	91
November	80.0		88	80	58	96
December	72.2		75	65	69	78
Average	89.8	87.7	92.4	91.5	87.5	93.7

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km 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	6.6	7	7	6	6	9
February	9.9	11	10	10	11	11
March	13.1	14	13	15	13	13
April	16.6		14	16	15	21
May	20.5		20	23	17	21
June	25.6		28	26	25	23
July	26.9		25	29	24	27
August	26.4		25	29	23	29
September	22.8		26	21	23	24
October	17.7		20	20	17	15
November	10.8		11	12	8	13
December	7.7		9	4	8	8
Average	16.3	10.5	17.3	18.0	15.7	17.8

69th highest temperature of France

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	1.2	1	3	1	1	2
February	2.2	6	1	3	2	5
March	3.5	6	4	3	1	4
April	4.8		5	4	3	7
May	9.0		10	10	8	9
June	13.7		14	14	15	12
July	14.9		15	14	15	14
August	14.9		15	16	14	16
September	11.1		14	11	12	12
October	8.5		9	11	6	9
November	4.2		6	6	3	4
December	2.7		4	-1	3	3
Average	7.1	3.9	8.4	7.8	6.7	8.0

25th lowest temperature of France

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	16.6	13	13	6	27	15
February	12.5	18	6	12	14	15
March	12.1	12	10	2	8	13
April	6.8		11	9	8	3
May	6.6		5	2	11	6
June	4.7		1	7	8	7
July	4.5		7	0	11	2
August	3.5		6	2	3	1
September	5.1		2	5	6	6
October	10.6		13	7	7	18
November	11.8		10	11	12	3
December	17.0		19	8	20	23
Average	9.1	14.1	7.7	5.1	10.2	8.1

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	7.4	8	9	7	7	7
February	8.4	9	8	10	8	11
March	8.5	8	10	8	7	9
April	7.2		8	8	7	7
May	6.8		8	6	9	7
June	6.0		6	6	5	7
July	6.5		7	7	6	7
August	6.2		7	7	6	7
September	6.1		6	6	5	6
October	6.8		7	7	6	8
November	7.0		10	7	6	6
December	7.7		9	6	8	7
Average	7.1	8.3	7.7	6.9	6.6	7.2

69th highest wind speed of France

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	219°	218°	230°	218°	203°
February	210°	007°	225°	137°	225°
March	202°	233°	083°	260°	112°
April		295°	053°	019°	089°
May		013°	292°	225°	041°
June		032°	268°	294°	235°
July		235°	332°	254°	275°
August		249°	025°	268°	251°
September		167°	245°	117°	276°
October		201°	186°	191°	206°
November		220°	194°	255°	173°
December		222°	067°	211°	196°

Prevailing wind direction

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