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
93.9
92
96
93
96
February
91.4
96
85
89
100
97
March
92.8
93
90
89
99
April
91.2
80
87
88
May
96.2
90
98
June
94.3
88
July
80.8
45
100
August
97.2
98
98
September
97.2
98
99
97
October
97.3
97
99
97
November
93.3
92
96
94
95
December
96.5
98
98
94
98
Average
94.1
93.5
87.8
93.7
95.9
95.5
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
21.3
22
23
21
21
February
22.5
22
23
22
17
21
March
23.6
24
25
23
25
April
24.8
25
24
26
May
27.1
28
27
June
29.4
30
July
31.0
32
31
August
31.0
33
30
September
29.8
31
30
30
October
27.4
28
26
28
November
24.3
25
25
25
23
December
23.3
23
24
25
21
Average
25.4
22.9
26.9
24.2
25.9
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
2021
2020
January
17.7
17
19
18
18
February
19.6
19
20
18
14
18
March
20.8
21
21
20
23
April
22.3
22
22
23
May
24.9
25
25
June
27.1
28
July
27.9
29
31
August
28.3
30
29
September
27.3
28
27
27
October
25.1
25
24
25
November
21.4
22
22
22
19
December
20.4
20
22
23
18
Average
22.6
19.0
24.0
21.4
23.4
21.5
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
0
0
0
March
0.0
0
0
0
0
April
0.0
0
0
0
May
0.0
0
0
June
0.0
0
July
0.0
0
0
August
0.0
0
0
September
0.0
0
0
0
October
0.0
0
0
0
November
0.0
0
0
0
0
December
0.0
0
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
13.3
15
12
13
12
February
12.3
11
12
13
20
13
March
13.0
14
12
14
13
April
13.7
14
16
13
May
11.2
10
11
June
8.2
6
July
5.4
5
13
August
6.5
7
9
September
8.9
7
10
8
October
12.5
13
10
12
November
13.0
13
15
12
14
December
12.2
14
12
9
14
Average
11.4
12.9
9.9
12.8
10.6
12.8
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
080°
105°
355°
327°
February
359°
131°
053°
326°
011°
March
100°
118°
080°
137°
April
089°
120°
097°
May
105°
111°
June
309°
July
324°
279°
August
054°
106°
September
077°
036°
107°
October
085°
070°
086°
November
067°
079°
056°
084°
December
069°
089°
127°
072°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.