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
0.0
0
0
February
39.4
40
0
March
76.5
78
0
April
50.0
50
May
90.3
90
June
100.0
100
July
75.0
75
August
45.8
46
September
54.1
57
0
October
42.1
44
33
November
12.5
0
22
December
0.0
0
0
Average
36.4
39.2
50.0
20.0
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
January
17.1
17
18
February
23.5
24
22
March
28.1
28
24
April
31.2
31
May
31.0
31
June
35.2
35
July
29.1
29
August
30.0
30
September
31.9
32
28
October
27.5
28
27
November
22.1
25
21
December
19.1
19
26
Average
25.0
22.9
27.8
24.3
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
10.5
10
13
February
13.6
13
22
March
20.0
20
22
April
29.2
29
May
29.3
29
June
32.8
33
July
29.0
29
August
29.1
29
September
29.0
29
28
October
25.9
26
27
November
17.8
20
17
December
14.4
14
17
Average
20.5
14.3
25.2
22.0
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
February
12.2
12
0
March
0.0
0
0
April
0.0
0
May
3.2
3
June
5.5
6
July
0.0
0
August
41.6
42
September
4.1
4
0
October
15.7
19
0
November
0.0
0
0
December
0.0
0
0
Average
4.7
4.4
9.7
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
2.4
2
2
February
3.5
4
5
March
5.2
5
3
April
5.7
6
May
3.7
4
June
6.1
6
July
7.0
7
August
4.1
4
September
3.8
4
7
October
1.8
2
2
November
1.8
2
2
December
2.5
3
3
Average
3.2
3.7
3.6
2.3
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
317°
276°
February
306°
284°
March
313°
315°
April
321°
May
328°
June
349°
July
122°
August
289°
September
115°
141°
October
108°
333°
November
326°
302°
December
316°
333°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.