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
97.1
98
96
100
February
100.0
100
100
100
March
100.0
100
100
April
97.2
97
May
95.3
95
June
95.6
95
97
July
100.0
100
100
August
99.3
100
99
September
97.0
100
94
October
97.8
98
98
November
98.3
97
100
December
98.1
97
100
Average
98.3
99.0
97.9
98.2
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
34.7
36
33
38
February
32.8
34
32
28
March
33.3
35
31
April
27.0
27
May
23.8
24
June
24.4
25
24
July
26.3
24
28
August
29.5
29
30
September
29.0
32
27
October
30.9
35
27
November
33.7
35
33
December
34.9
36
34
Average
31.3
35.2
29.9
28.9
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
26.2
27
24
38
February
25.5
28
22
28
March
26.2
27
25
April
19.6
20
May
18.4
18
June
16.3
16
16
July
18.1
17
19
August
19.0
20
18
September
21.2
24
19
October
22.5
25
20
November
23.9
28
20
December
27.3
28
27
Average
23.0
27.3
22.1
19.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
1.4
1
2
0
February
0.0
0
0
0
March
0.0
0
0
April
2.7
3
May
7.8
8
June
0.0
0
0
July
0.0
0
0
August
0.0
0
0
September
0.7
0
2
October
0.7
0
2
November
0.0
0
0
December
0.0
0
0
Average
0.6
0.5
0.9
0.4
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
6.4
7
6
6
February
6.7
6
7
5
March
6.8
8
5
April
4.7
5
May
5.2
5
June
8.0
8
8
July
7.9
7
9
August
8.9
8
10
September
9.3
10
9
October
8.8
10
7
November
8.2
9
8
December
8.0
9
7
Average
7.6
7.0
7.6
8.2
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
010°
040°
360°
February
028°
052°
090°
March
026°
038°
April
118°
May
015°
June
033°
090°
July
042°
011°
August
045°
047°
September
013°
157°
October
003°
145°
November
004°
125°
December
006°
056°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.