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
81.0
75
100
94
83
100
February
80.9
78
100
96
67
0
March
95.9
96
100
100
67
100
April
95.8
97
93
100
100
100
May
93.3
92
96
89
33
June
92.1
92
92
100
100
July
87.8
82
97
100
100
August
82.3
79
89
50
78
September
85.8
91
100
77
0
October
91.1
94
100
87
November
84.4
90
100
71
100
December
81.2
82
88
77
100
Average
86.6
86.0
91.5
93.6
78.1
95.4
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
33.3
35
33
33
31
32
February
33.5
35
33
33
27
28
March
33.6
35
25
27
30
32
April
32.2
35
31
29
29
30
May
31.4
33
32
28
26
June
30.6
31
30
30
28
July
29.5
30
30
26
28
August
28.6
29
29
25
28
September
28.0
29
28
28
25
October
29.7
31
29
29
November
30.7
32
33
30
29
December
31.5
34
23
33
29
Average
29.7
32.8
30.9
30.4
29.4
29.4
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
25.3
23
30
26
30
32
February
25.9
24
29
28
27
28
March
26.4
26
25
27
30
32
April
26.8
26
26
28
29
30
May
24.7
24
25
27
26
June
24.3
24
24
30
27
July
24.1
23
25
26
27
August
24.4
24
25
25
25
September
25.3
25
28
26
25
October
24.8
25
29
25
November
25.1
25
32
24
29
December
23.6
22
21
25
28
Average
25.7
24.1
24.5
26.7
25.4
28.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.2
0
0
0
0
0
February
0.0
0
0
0
0
0
March
0.4
0
0
0
0
0
April
0.0
0
0
0
0
0
May
1.5
1
3
0
0
June
2.3
2
3
0
0
July
5.7
8
3
0
0
August
5.2
6
4
0
7
September
5.5
5
0
8
0
October
0.3
0
0
1
November
1.0
1
0
1
0
December
0.0
0
0
0
0
Average
1.0
2.4
2.0
2.0
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
5.6
5
9
7
5
7
February
3.2
3
1
4
4
0
March
2.4
2
0
0
9
5
April
5.1
5
5
8
3
7
May
4.6
3
6
3
2
June
3.9
3
5
12
7
July
4.0
5
3
6
5
August
4.2
5
3
9
2
September
4.0
3
7
6
0
October
3.0
3
3
4
November
2.2
2
4
3
5
December
5.2
5
4
7
3
Average
4.5
4.1
3.7
6.0
4.6
4.5
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
052°
061°
047°
036°
060°
February
024°
233°
355°
052°
360°
March
216°
360°
360°
245°
026°
April
213°
219°
214°
153°
218°
May
217°
213°
209°
210°
June
215°
229°
210°
235°
July
240°
236°
240°
252°
August
234°
238°
200°
260°
September
225°
243°
222°
360°
October
199°
090°
215°
November
203°
180°
217°
206°
December
045°
054°
039°
225°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.