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
97.7
98
98
98
97
97
February
97.6
97
98
99
96
98
March
98.7
99
99
99
98
98
April
99.1
99
98
99
99
100
May
99.7
99
100
100
100
100
June
99.3
100
98
99
99
99
July
99.7
99
99
99
100
100
August
99.8
99
100
100
100
100
September
99.5
99
99
100
100
October
99.2
100
99
100
98
November
99.1
100
99
98
99
December
98.3
98
100
99
99
Average
99.0
98.8
98.8
99.0
98.7
98.8
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
30.9
31
31
31
31
31
February
31.2
32
31
31
31
31
March
31.5
33
32
31
31
32
April
31.7
33
32
32
31
32
May
30.8
31
31
31
30
31
June
29.6
30
30
29
29
30
July
28.5
29
29
28
28
28
August
28.7
29
29
28
29
28
September
29.2
30
28
29
29
October
30.3
32
30
30
30
November
31.2
33
30
31
31
December
31.4
32
31
32
31
Average
30.4
30.9
30.9
29.9
30.0
30.3
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
25.3
25
25
26
25
26
February
25.3
25
26
26
26
26
March
25.9
26
26
26
26
26
April
26.0
27
26
26
26
26
May
25.2
26
25
25
24
25
June
23.8
25
21
24
24
25
July
22.7
21
23
22
23
23
August
22.1
22
23
21
22
22
September
22.7
23
22
23
23
October
24.1
25
23
24
24
November
24.9
26
25
25
25
December
25.8
25
26
26
26
Average
24.5
24.6
24.5
24.1
24.3
24.7
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
21.6
37
22
21
27
19
February
20.1
30
27
25
23
22
March
18.0
29
28
23
17
18
April
14.5
29
21
18
16
10
May
4.9
9
13
6
2
2
June
4.1
6
5
4
5
4
July
3.2
3
4
12
2
4
August
3.3
9
5
7
3
1
September
8.3
14
12
7
3
October
13.1
15
15
20
17
November
15.9
28
14
19
17
December
18.2
31
16
17
16
Average
12.5
19.4
18.1
14.6
13.5
11.3
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
8.6
11
10
8
7
8
February
7.3
8
7
9
8
7
March
7.3
7
8
7
7
7
April
7.7
8
7
8
7
8
May
10.2
12
9
10
11
11
June
11.1
12
9
12
11
12
July
11.9
10
12
11
12
14
August
9.2
10
9
9
9
9
September
7.9
7
8
8
9
October
7.5
8
7
8
7
November
7.4
8
8
7
7
December
6.9
7
7
6
7
Average
8.6
9.5
8.2
8.5
8.4
8.7
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
294°
337°
302°
312°
317°
February
311°
044°
290°
360°
284°
March
124°
353°
263°
305°
211°
April
162°
165°
162°
165°
154°
May
155°
183°
173°
180°
170°
June
163°
170°
158°
166°
159°
July
168°
163°
148°
157°
163°
August
160°
166°
152°
160°
163°
September
153°
165°
160°
164°
October
071°
099°
106°
023°
November
125°
028°
036°
006°
December
329°
027°
061°
339°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.