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
96.5
98
95
100
February
90.9
100
83
67
March
99.2
99
100
April
92.5
93
May
89.0
89
June
88.5
87
92
July
96.3
95
97
August
92.1
96
88
September
87.5
93
83
October
85.5
84
89
November
81.9
70
93
December
97.9
98
98
Average
93.2
98.5
90.0
90.9
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
28.9
30
28
28
February
28.1
30
26
26
March
29.6
31
28
April
25.6
26
May
24.4
25
June
22.6
22
23
July
25.1
24
26
August
25.4
27
24
September
26.0
29
24
October
27.5
31
24
November
28.3
31
26
December
30.7
31
29
Average
27.6
30.7
27.0
25.1
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
22.4
23
21
28
February
22.4
24
20
26
March
23.7
25
22
April
19.6
20
May
18.3
18
June
15.9
15
17
July
18.3
18
19
August
17.9
20
16
September
18.2
20
16
October
20.1
22
18
November
20.9
24
18
December
23.9
24
24
Average
20.8
24.0
20.2
18.2
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
2.0
2
2
0
February
3.6
0
8
0
March
0.7
0
2
April
2.4
3
May
0.0
0
June
1.6
2
0
July
0.6
1
0
August
1.2
0
2
September
4.1
2
6
October
1.3
2
0
November
3.4
7
0
December
0.6
0
2
Average
1.5
0.9
2.1
1.6
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
9.4
9
10
10
February
7.7
7
8
5
March
9.2
11
7
April
7.5
8
May
8.3
8
June
9.3
9
10
July
13.1
12
15
August
12.0
12
12
September
12.2
14
11
October
11.2
13
9
November
10.7
12
9
December
8.4
8
8
Average
10.1
9.3
10.2
10.7
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
356°
012°
344°
February
341°
341°
324°
March
035°
040°
April
099°
May
047°
June
037°
018°
July
037°
023°
August
044°
060°
September
021°
088°
October
013°
116°
November
008°
119°
December
031°
342°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.