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
99.2
100
97
99
99
100
February
98.5
99
98
98
99
99
March
98.4
99
98
97
99
98
April
97.4
99
96
96
97
98
May
96.3
97
97
94
96
96
June
97.1
97
96
98
98
97
July
98.2
98
99
98
99
99
August
98.8
99
98
98
100
99
September
99.1
99
99
99
100
99
October
97.8
100
98
98
99
November
97.9
96
98
99
98
December
98.2
99
99
98
99
Average
98.1
98.5
97.7
97.6
98.4
98.4
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
30.3
32
29
30
30
31
February
30.2
32
29
30
30
30
March
30.9
33
30
30
31
31
April
30.7
32
31
30
30
31
May
30.4
31
31
30
30
31
June
31.2
32
32
31
32
31
July
32.1
33
32
32
32
32
August
33.0
34
33
33
33
33
September
33.8
35
35
34
33
33
October
33.4
35
33
33
33
November
32.1
33
32
32
32
December
30.5
32
30
30
31
Average
31.6
32.6
31.6
31.1
31.2
31.5
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
23.8
24
24
24
24
24
February
23.8
24
22
24
24
25
March
23.8
24
23
24
24
23
April
24.1
25
23
24
24
24
May
23.4
23
24
24
24
22
June
24.1
25
25
23
24
24
July
23.9
25
25
23
24
24
August
24.0
25
25
24
24
23
September
23.6
24
24
22
24
23
October
24.4
25
24
25
24
November
23.8
23
22
24
23
December
23.8
25
22
24
24
Average
23.9
24.2
23.9
23.2
24.1
23.3
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
8.7
7
11
8
12
6
February
10.7
3
15
19
9
4
March
8.9
8
9
13
11
9
April
15.2
11
12
17
20
11
May
20.3
27
19
16
18
17
June
12.2
11
10
10
11
14
July
7.2
6
6
7
6
6
August
3.3
3
2
4
4
3
September
1.7
0
1
1
3
1
October
3.0
1
4
4
5
November
7.4
5
7
7
11
December
12.7
8
10
12
12
Average
9.3
8.3
8.9
9.5
9.5
8.3
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
6.2
6
6
7
6
7
February
6.8
6
6
6
8
8
March
6.8
6
6
8
7
6
April
6.2
6
5
7
6
7
May
5.5
5
5
6
5
7
June
4.4
4
4
5
4
5
July
4.5
4
4
5
5
5
August
5.0
5
5
5
5
5
September
5.2
6
5
6
4
5
October
5.2
5
5
5
5
November
5.3
5
5
6
5
December
5.6
5
5
6
5
Average
5.6
5.4
5.1
5.7
5.6
5.7
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
075°
047°
048°
056°
059°
February
075°
046°
047°
050°
052°
March
070°
053°
054°
056°
054°
April
071°
061°
059°
051°
049°
May
085°
065°
059°
064°
062°
June
098°
083°
066°
071°
067°
July
101°
085°
074°
076°
086°
August
103°
080°
076°
094°
093°
September
102°
085°
080°
064°
089°
October
083°
076°
078°
071°
November
078°
076°
064°
081°
December
056°
060°
061°
064°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.