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
99.3
100
100
99
100
99
February
99.1
99
99
100
100
99
March
99.5
98
99
100
100
100
April
99.8
100
100
100
100
100
May
99.7
100
100
100
100
100
June
99.4
100
100
100
100
99
July
97.1
100
99
99
95
100
August
97.8
100
99
99
99
92
September
99.5
99
100
100
100
99
October
99.3
100
100
100
97
100
November
99.8
100
100
100
100
December
99.0
100
100
100
100
Average
99.1
99.6
99.5
99.6
99.0
98.8
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
25.2
27
24
25
25
25
February
25.9
27
27
25
27
26
March
29.3
29
29
31
33
27
April
34.1
32
32
36
36
33
May
38.7
38
39
39
39
38
June
38.8
40
39
38
38
38
July
36.6
39
35
34
39
35
August
35.1
34
36
35
35
35
September
35.1
35
35
34
36
37
October
33.8
34
34
34
33
33
November
29.7
30
31
29
29
December
26.4
27
28
27
26
Average
32.6
33.2
32.2
32.6
33.0
31.8
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
17.4
19
18
18
15
17
February
18.9
20
19
18
19
19
March
21.6
22
22
22
23
20
April
26.1
25
26
28
26
26
May
30.1
30
31
30
29
31
June
31.8
32
33
32
31
32
July
30.7
32
30
30
33
30
August
29.4
29
30
30
30
30
September
28.3
29
29
29
29
28
October
25.7
28
28
24
25
23
November
21.8
23
23
21
20
December
18.1
19
19
19
18
Average
25.2
26.5
25.5
25.3
25.0
24.3
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
1.1
0
0
1
0
8
February
0.6
4
0
1
0
0
March
0.3
0
0
0
0
1
April
0.6
2
2
0
0
0
May
0.3
1
0
0
0
0
June
0.0
0
0
0
0
0
July
0.6
0
0
5
1
0
August
0.0
1
0
0
0
0
September
0.0
0
0
0
0
0
October
0.5
0
0
0
3
0
November
0.3
1
0
0
0
December
0.4
0
0
0
0
Average
0.4
0.8
0.2
0.5
0.3
0.6
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
7.3
7
8
8
7
8
February
7.5
8
7
7
7
7
March
8.0
8
8
7
7
8
April
7.6
8
8
7
7
7
May
8.3
7
9
8
8
8
June
7.7
7
8
8
8
7
July
8.3
7
8
9
10
8
August
7.7
8
7
7
9
8
September
7.3
8
7
7
7
7
October
7.0
7
7
7
8
7
November
7.3
7
6
7
8
December
6.3
6
6
6
7
Average
7.6
7.6
7.6
7.2
7.5
7.5
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
003°
032°
344°
358°
326°
February
348°
007°
356°
015°
014°
March
029°
019°
009°
009°
019°
April
019°
018°
010°
010°
034°
May
021°
025°
010°
023°
025°
June
039°
032°
030°
037°
042°
July
043°
051°
044°
046°
048°
August
044°
038°
033°
045°
044°
September
041°
031°
038°
028°
014°
October
029°
031°
015°
020°
004°
November
025°
018°
021°
045°
December
014°
012°
010°
019°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.