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
68.9
100
50
0
42
February
78.5
64
100
March
84.1
75
0
93
April
90.3
100
100
May
69.5
June
73.9
0
20
July
90.0
50
August
100.0
100
September
90.9
89
October
100.0
100
November
94.2
80
December
83.4
100
Average
78.4
100.0
100.0
68.0
28.5
72.5
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
25.9
24
21
21
24
February
26.8
25
26
March
32.6
27
32
28
April
36.1
35
30
May
40.8
June
36.6
34
37
July
33.8
35
August
32.8
37
September
33.1
33
October
37.7
36
November
33.3
32
December
27.9
26
Average
30.0
24.0
37.0
25.2
31.5
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
2021
2020
January
21.4
24
21
21
22
February
23.8
22
24
March
29.0
25
28
27
April
32.0
35
30
May
35.1
June
33.8
34
32
July
30.6
32
August
29.1
36
September
29.6
29
October
31.4
34
November
29.9
30
December
23.3
26
Average
27.8
24.0
36.0
23.0
30.8
26.9
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.0
0
0
0
0
February
0.0
0
0
March
0.0
0
0
0
April
0.0
0
0
May
0.0
June
0.0
0
0
July
0.0
0
August
0.0
0
September
0.0
0
October
0.0
0
November
0.0
0
December
0.0
0
Average
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
12.5
10
14
24
15
February
12.5
14
18
March
12.1
12
16
11
April
9.6
9
7
May
11.0
June
9.1
15
7
July
9.9
8
August
8.3
11
September
4.1
5
October
9.3
11
November
10.8
12
December
12.9
8
Average
11.9
10.0
11.0
13.0
16.0
11.9
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
090°
063°
039°
055°
February
042°
056°
March
041°
118°
041°
April
105°
075°
May
June
336°
060°
July
233°
August
131°
September
248°
October
056°
November
063°
December
081°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.