Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi 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
98.7
95
100
99
98
100
February
97.4
99
94
100
98
99
March
96.2
98
95
97
96
95
April
97.7
94
96
100
100
100
May
98.7
98
97
100
98
June
99.0
98
99
100
99
July
99.0
98
100
100
99
August
98.2
99
99
100
99
September
98.6
98
99
99
99
October
98.0
99
95
99
98
November
97.6
93
98
100
98
December
97.8
95
95
97
100
Average
97.9
96.4
96.7
98.0
98.7
98.6
Marginal VFR conditions or better during daylight period
Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi 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
26.0
27
27
26
26
25
February
25.5
25
26
26
25
26
March
25.4
24
27
26
25
26
April
26.4
26
26
26
26
27
May
27.2
27
27
28
27
June
28.2
28
26
29
29
July
29.4
30
29
30
29
August
29.9
31
28
30
30
September
29.7
29
29
29
30
October
28.6
29
29
28
30
November
27.4
27
27
28
28
December
26.2
26
27
26
28
Average
27.3
25.4
27.7
27.1
27.3
27.7
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
19.1
20
19
19
21
17
February
18.9
20
22
19
20
19
March
19.5
19
21
20
19
20
April
20.5
21
20
21
20
20
May
21.0
21
20
22
21
June
20.4
20
21
23
24
July
23.8
25
24
25
24
August
24.0
25
22
25
21
September
23.1
21
24
23
24
October
19.7
21
22
22
14
November
20.6
20
20
21
19
December
20.2
19
21
21
22
Average
20.8
19.8
21.0
21.0
21.8
20.3
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
4.8
12
6
5
7
2
February
8.2
5
26
0
7
8
March
9.6
6
18
7
12
17
April
7.0
8
15
5
5
3
May
4.6
10
6
1
5
June
3.5
3
4
3
3
July
5.2
7
6
7
9
August
3.7
4
3
3
2
September
4.3
6
4
3
3
October
5.6
4
9
4
7
November
6.8
15
5
4
7
December
7.7
14
12
10
5
Average
6.0
7.8
10.3
5.3
5.3
5.9
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
10.3
10
9
7
12
13
February
11.9
13
14
9
12
13
March
11.7
14
10
10
15
13
April
11.6
13
11
14
11
10
May
11.1
11
12
12
12
June
11.2
11
11
11
11
July
12.5
13
13
13
12
August
11.7
12
11
12
12
September
10.9
12
9
13
10
October
10.0
8
11
13
8
November
11.2
12
13
9
12
December
11.6
12
10
13
10
Average
11.4
12.3
11.2
10.8
12.0
11.3
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
223°
032°
114°
062°
057°
February
063°
063°
054°
074°
045°
March
054°
169°
055°
056°
065°
April
073°
057°
064°
047°
068°
May
063°
075°
065°
051°
June
059°
060°
059°
064°
July
054°
055°
056°
059°
August
056°
058°
052°
059°
September
059°
059°
052°
065°
October
058°
045°
053°
102°
November
065°
047°
045°
062°
December
044°
070°
071°
056°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.