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
99.2
99
100
100
February
100.0
100
100
100
March
100.0
100
100
April
98.7
99
May
92.7
93
June
97.5
98
98
July
98.1
97
100
August
99.3
99
100
September
94.6
93
96
October
97.8
98
98
November
99.3
100
99
December
100.0
100
100
Average
98.6
99.5
97.7
98.7
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
31.9
31
33
40
February
30.2
31
28
31
March
29.5
31
27
April
25.3
25
May
21.3
21
June
20.5
22
18
July
21.8
20
23
August
23.4
24
23
September
23.7
24
24
October
24.8
27
23
November
27.1
28
26
December
30.8
31
31
Average
27.0
31.1
25.6
24.1
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
22.8
23
22
40
February
24.9
25
24
31
March
23.9
24
23
April
17.8
18
May
16.2
16
June
14.4
16
12
July
15.4
14
17
August
14.7
16
14
September
15.2
18
12
October
17.3
18
16
November
20.2
23
17
December
23.9
24
23
Average
19.7
24.0
19.0
16.1
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
0.0
0
0
0
February
1.2
2
0
0
March
1.9
3
0
April
0.0
0
May
10.1
10
June
0.8
1
0
July
0.0
0
0
August
0.0
0
0
September
1.3
3
0
October
0.7
1
0
November
1.8
4
0
December
0.6
1
0
Average
1.0
1.4
1.7
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
January
4.4
5
4
2
February
5.2
5
6
4
March
4.6
5
3
April
4.4
4
May
3.4
3
June
5.1
5
5
July
5.6
6
6
August
6.8
8
6
September
7.6
8
7
October
8.7
10
7
November
5.4
7
4
December
5.7
6
4
Average
5.6
5.0
6.1
5.6
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
138°
035°
270°
February
103°
110°
052°
March
087°
043°
April
132°
May
109°
June
112°
179°
July
116°
063°
August
123°
092°
September
141°
129°
October
118°
162°
November
121°
116°
December
106°
152°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.