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
98.4
99
98
98
100
100
February
98.3
98
100
100
99
97
March
99.4
100
100
99
100
99
April
98.3
90
100
99
100
100
May
98.5
93
100
100
99
100
June
99.6
99
100
100
100
100
July
99.2
99
96
100
100
100
August
99.8
100
100
100
100
99
September
99.7
99
100
100
100
100
October
99.1
99
98
100
97
99
November
99.3
99
99
100
98
December
98.7
99
99
99
99
Average
99.0
97.6
99.0
99.4
99.3
99.2
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
30.7
31
30
30
31
31
February
30.9
31
31
31
30
31
March
31.3
32
31
31
32
32
April
31.1
31
31
31
31
32
May
30.4
30
30
30
31
31
June
29.4
29
30
29
30
29
July
28.9
28
29
29
29
29
August
28.6
28
29
28
29
29
September
28.8
29
28
29
29
30
October
29.3
29
30
29
29
30
November
29.8
30
29
30
30
December
30.5
31
30
31
30
Average
29.9
29.8
29.8
29.5
30.0
30.1
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
24.6
25
24
24
24
25
February
24.8
26
25
25
24
25
March
25.0
26
25
24
25
26
April
24.9
26
25
24
24
26
May
24.1
24
25
24
24
25
June
23.3
23
23
23
24
23
July
22.6
23
23
22
23
23
August
22.2
22
22
22
22
22
September
22.7
24
23
23
23
23
October
23.2
23
23
23
23
23
November
24.1
24
23
24
24
December
24.6
25
24
24
24
Average
23.8
24.0
23.8
23.2
23.7
24.0
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
15.4
17
28
23
2
4
February
16.0
19
7
9
8
13
March
6.3
5
18
1
2
6
April
9.0
5
14
10
3
16
May
6.1
1
4
10
1
11
June
2.9
6
1
1
4
3
July
5.4
10
12
7
7
1
August
4.5
1
2
12
7
2
September
4.4
7
17
5
3
0
October
6.4
8
12
8
9
12
November
9.8
3
19
9
13
December
10.1
12
6
2
15
Average
8.1
8.2
10.9
9.6
4.7
8.2
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
7.7
7
8
10
6
7
February
7.4
9
6
6
7
7
March
6.2
6
7
6
6
6
April
6.4
6
6
7
6
7
May
6.2
5
6
7
7
6
June
6.7
7
7
6
7
7
July
6.9
8
8
6
7
7
August
7.4
7
7
7
8
7
September
6.7
7
7
6
6
8
October
6.8
6
7
6
8
8
November
7.1
6
7
7
8
December
7.6
7
9
8
7
Average
6.9
6.8
6.9
6.7
6.9
7.2
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
055°
055°
063°
070°
058°
February
022°
036°
096°
058°
064°
March
018°
055°
058°
342°
046°
April
020°
016°
069°
047°
050°
May
234°
104°
056°
059°
260°
June
174°
074°
077°
066°
154°
July
145°
071°
024°
073°
069°
August
024°
070°
063°
052°
060°
September
041°
122°
031°
011°
060°
October
251°
050°
020°
055°
059°
November
266°
350°
044°
053°
December
035°
065°
060°
066°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.