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
99.3
100
99
100
99
99
February
98.5
97
100
97
100
97
March
99.4
99
100
100
100
99
April
99.1
97
98
99
100
100
May
99.2
97
99
100
100
100
June
99.4
99
100
100
100
97
July
98.9
100
99
97
100
99
August
99.1
99
99
99
99
September
98.9
100
96
100
100
October
99.1
99
97
99
100
November
99.5
99
99
100
99
December
99.3
97
100
100
99
Average
99.1
98.1
98.9
98.5
99.6
98.9
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
28.6
29
29
29
28
29
February
28.5
29
28
27
29
29
March
28.7
30
29
28
29
28
April
29.5
30
29
29
30
30
May
30.9
32
32
30
31
32
June
31.6
33
33
31
30
32
July
31.3
32
32
31
31
32
August
31.5
32
32
31
32
September
31.8
33
31
32
32
October
31.2
33
31
32
31
November
30.2
31
30
31
30
December
29.0
29
29
29
29
Average
30.2
30.7
30.5
29.9
30.3
30.4
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
23.1
24
23
22
23
24
February
22.9
24
23
22
23
23
March
23.0
24
23
23
23
23
April
23.8
25
23
23
24
24
May
25.0
26
25
24
25
26
June
25.9
27
27
26
25
26
July
26.2
27
27
26
26
26
August
26.3
27
26
27
27
September
26.0
26
25
27
26
October
25.7
27
26
26
25
November
24.8
25
25
25
24
December
23.9
24
24
24
24
Average
24.7
25.3
24.9
24.2
24.7
24.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
6.3
7
10
3
4
10
February
8.3
14
7
12
7
9
March
5.9
6
4
7
5
8
April
6.3
14
10
5
4
4
May
6.8
15
8
4
6
5
June
5.6
5
4
3
12
5
July
6.8
8
7
12
6
9
August
6.3
8
7
5
7
September
6.5
6
16
3
4
October
7.1
9
12
7
5
November
6.9
7
8
7
9
December
9.0
11
6
10
7
Average
6.9
9.7
7.5
7.8
6.2
6.8
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
10.1
11
10
10
10
10
February
10.7
7
12
11
12
11
March
10.5
10
11
12
12
11
April
11.0
10
10
12
10
10
May
10.0
8
8
12
11
9
June
11.0
9
10
12
11
11
July
11.9
11
12
12
12
12
August
11.0
10
11
11
11
September
8.7
9
9
9
8
October
8.0
7
9
8
9
November
8.3
10
9
9
8
December
9.2
9
8
10
8
Average
10.1
9.5
9.7
10.5
10.5
9.9
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
079°
070°
075°
072°
073°
February
073°
071°
070°
084°
078°
March
068°
063°
076°
069°
063°
April
065°
069°
076°
072°
075°
May
085°
098°
081°
075°
090°
June
089°
096°
075°
078°
072°
July
079°
076°
078°
081°
075°
August
085°
071°
074°
073°
September
073°
082°
066°
066°
October
097°
079°
087°
081°
November
083°
082°
072°
087°
December
072°
033°
076°
072°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.