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
69.3
70
75
71
81
58
February
59.2
46
60
62
64
50
March
87.3
85
99
74
86
80
April
96.4
98
99
98
92
99
May
95.2
96
95
95
97
99
June
85.8
91
82
89
91
92
July
75.2
69
85
81
74
79
August
66.2
69
72
66
75
69
September
79.2
90
66
89
76
October
90.2
91
88
93
95
November
97.3
96
98
98
99
December
82.7
85
98
72
92
Average
81.2
78.2
85.6
82.0
84.1
82.0
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
34.8
36
36
35
36
33
February
36.1
37
37
37
36
37
March
36.2
38
36
37
36
37
April
34.8
37
35
35
36
36
May
32.1
33
33
33
33
31
June
30.2
30
30
30
31
33
July
28.8
29
30
29
29
28
August
28.3
28
29
28
29
29
September
29.5
30
29
30
28
October
30.9
32
31
32
31
November
33.9
33
35
33
36
December
34.6
35
35
35
36
Average
32.4
33.5
32.8
32.8
33.0
32.7
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
19.7
19
20
20
19
19
February
22.7
23
22
21
22
22
March
25.5
26
24
26
24
25
April
25.7
26
25
24
25
26
May
24.0
23
24
24
25
25
June
22.7
23
23
23
23
23
July
22.5
23
22
23
23
22
August
22.0
23
22
21
23
23
September
21.5
21
20
22
22
October
22.3
23
22
22
22
November
21.2
23
19
20
21
December
20.2
20
19
20
20
Average
22.7
23.2
22.3
21.8
22.2
22.4
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
0
March
0.0
0
0
0
0
0
April
0.0
0
0
0
0
0
May
0.4
0
0
0
0
0
June
1.2
0
1
1
1
1
July
3.1
9
1
1
3
3
August
7.5
9
4
14
3
6
September
3.0
1
6
3
4
October
0.6
0
0
0
0
November
0.0
0
0
0
0
December
0.0
0
0
0
0
Average
1.5
2.4
0.6
2.0
0.9
1.2
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
4.5
4
4
5
5
5
February
4.8
5
5
4
5
5
March
5.0
5
5
5
5
5
April
5.4
6
5
5
5
6
May
5.3
6
5
5
5
5
June
5.1
6
5
5
5
5
July
5.1
5
5
5
5
5
August
5.1
6
5
5
5
5
September
4.9
5
5
5
5
October
4.7
5
5
5
5
November
4.5
5
5
4
5
December
4.3
4
5
5
4
Average
4.9
5.3
5.0
4.8
4.8
4.9
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
101°
092°
102°
126°
101°
February
152°
100°
107°
107°
093°
March
243°
242°
215°
245°
275°
April
231°
233°
235°
221°
258°
May
217°
226°
220°
219°
261°
June
236°
227°
219°
215°
262°
July
246°
235°
243°
239°
275°
August
233°
236°
248°
249°
284°
September
213°
241°
225°
227°
October
247°
215°
247°
219°
November
214°
114°
251°
115°
December
140°
108°
092°
150°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.