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
54.6
100
48
45
86
55
February
63.9
58
55
89
61
March
90.7
92
100
72
98
April
94.2
78
84
100
97
May
92.4
100
80
94
91
June
88.9
80
0
87
91
July
71.8
83
43
64
82
August
66.9
79
57
56
68
September
78.0
100
60
82
67
October
79.3
93
64
87
79
November
95.5
63
100
97
92
December
77.1
100
88
47
100
Average
79.4
91.9
75.4
69.4
76.9
78.1
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
30.2
34
31
30
27
31
February
32.0
34
31
31
33
March
32.2
34
30
31
33
April
29.9
28
28
31
30
May
29.5
30
25
31
30
June
28.0
28
22
28
29
July
26.7
28
26
26
27
August
26.6
27
25
26
27
September
27.0
29
26
28
26
October
28.8
29
27
29
29
November
31.8
30
32
33
32
December
31.5
29
32
33
28
Average
30.0
34.1
29.4
28.4
29.4
29.7
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
23.1
30
28
21
22
23
February
26.2
28
26
28
25
March
26.3
24
26
27
28
April
25.9
26
25
26
26
May
26.1
30
24
27
26
June
24.8
27
22
24
25
July
23.4
26
24
22
23
August
23.1
24
23
23
23
September
23.9
28
24
25
23
October
24.4
27
26
24
25
November
26.9
28
28
27
28
December
23.3
27
25
23
26
Average
24.7
24.1
26.8
24.4
24.8
24.7
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
March
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
2.2
0
0
1
4
August
1.7
0
5
6
0
September
2.5
0
0
3
8
October
2.8
0
0
5
0
November
0.3
0
0
0
0
December
0.0
0
0
0
0
Average
0.6
0.4
1.2
0.7
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
4.0
4
3
4
2
4
February
2.9
4
3
2
3
March
4.7
3
6
6
5
April
5.2
3
5
6
6
May
5.0
5
4
5
5
June
3.8
7
0
4
4
July
4.3
3
5
4
5
August
4.9
4
5
5
6
September
3.0
2
4
4
3
October
2.9
2
1
3
3
November
1.8
2
2
2
3
December
2.8
4
3
4
5
Average
3.5
3.3
3.3
3.6
3.9
4.3
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
161°
107°
060°
199°
063°
February
354°
149°
210°
068°
March
232°
210°
204°
241°
April
198°
210°
220°
218°
May
210°
120°
212°
216°
June
249°
360°
221°
211°
July
236°
256°
229°
233°
August
261°
234°
253°
233°
September
219°
224°
223°
228°
October
213°
300°
261°
202°
November
165°
235°
244°
070°
December
257°
085°
075°
180°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.