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
January
82.6
99
55
February
98.6
99
99
March
98.4
98
99
April
91.5
99
100
53
May
97.4
99
100
91
June
98.0
100
98
95
July
87.3
99
100
50
August
92.0
99
100
75
September
97.6
100
99
94
October
98.0
100
99
95
November
98.1
100
95
December
90.4
97
76
Average
94.7
99.2
96.7
82.8
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
January
36.2
37
36
February
36.9
37
37
March
36.5
38
35
April
34.4
34
35
35
May
34.7
35
35
35
June
34.7
35
36
34
July
33.7
34
35
33
August
33.7
34
35
33
September
35.3
36
36
34
October
35.4
36
36
35
November
34.2
34
35
December
35.3
36
35
Average
35.4
35.3
35.2
34.2
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
25.6
26
25
February
24.7
24
25
March
22.9
23
23
April
25.4
26
24
27
May
25.7
24
27
27
June
26.3
27
27
26
July
25.1
23
26
26
August
24.6
26
26
23
September
26.5
27
27
26
October
25.6
27
27
23
November
25.1
25
25
December
24.5
26
23
Average
28.1
25.0
25.5
25.0
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
0.1
0
0
February
1.0
2
0
March
1.0
0
2
April
1.9
3
2
0
May
0.8
2
0
0
June
0.0
0
0
0
July
0.0
0
0
0
August
0.4
1
0
0
September
0.4
0
0
1
October
1.0
1
2
0
November
0.9
1
0
December
0.2
0
0
Average
0.4
0.8
0.6
0.2
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
January
7.0
6
9
February
7.3
8
7
March
7.3
8
6
April
6.9
6
7
10
May
6.7
7
6
7
June
6.2
5
7
6
July
7.0
5
7
10
August
6.8
5
7
9
September
7.1
6
8
7
October
6.7
4
9
7
November
6.8
6
9
December
7.8
8
8
Average
8.2
6.0
7.2
7.9
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
084°
103°
February
112°
115°
March
092°
093°
April
080°
077°
089°
May
106°
105°
109°
June
104°
098°
100°
July
066°
072°
086°
August
078°
108°
088°
September
073°
099°
102°
October
090°
081°
105°
November
090°
096°
December
100°
090°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.