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
54.6
66
57
66
77
25
February
67.8
59
75
63
86
34
March
97.0
99
98
99
95
97
April
97.4
99
98
97
97
98
May
97.3
98
98
95
98
98
June
96.4
98
95
97
99
96
July
94.4
90
93
93
99
95
August
93.8
94
92
87
98
98
September
93.4
92
83
95
97
October
96.9
96
96
99
97
November
97.3
98
100
97
97
December
71.0
54
96
73
95
Average
88.6
88.3
87.7
89.5
93.0
86.7
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
32.2
33
32
33
32
33
February
32.3
34
32
32
32
33
March
32.0
33
31
32
32
33
April
32.1
33
32
31
32
32
May
31.1
32
31
31
32
32
June
29.4
30
29
29
30
29
July
28.2
28
29
28
29
28
August
27.8
28
28
27
29
28
September
28.6
29
27
29
28
October
30.0
30
30
30
29
November
30.9
31
31
31
31
December
31.8
33
31
32
32
Average
30.5
31.0
30.6
30.0
30.8
30.5
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
25.5
26
26
26
25
26
February
26.2
27
26
27
26
27
March
26.1
27
26
26
26
26
April
25.8
27
25
25
27
26
May
25.2
26
26
25
26
26
June
24.2
25
24
24
24
24
July
24.1
24
25
24
24
24
August
23.4
22
24
23
24
23
September
24.1
24
24
24
24
October
24.3
25
25
23
24
November
25.3
26
25
25
25
December
25.8
26
26
27
25
Average
25.0
25.4
25.1
24.8
25.0
25.0
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.1
0
0
0
1
0
February
0.3
0
0
0
0
0
March
0.6
1
2
0
0
0
April
0.8
1
1
2
0
1
May
1.5
1
2
1
0
2
June
2.8
2
5
3
1
5
July
2.8
6
5
1
1
3
August
2.9
2
6
6
1
1
September
4.3
5
11
3
3
October
1.6
1
1
1
3
November
0.2
0
0
0
0
December
0.1
0
0
0
0
Average
1.5
1.4
2.2
2.2
0.7
1.4
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
8.3
8
8
8
9
7
February
9.3
9
9
10
10
8
March
10.6
10
9
11
11
11
April
9.5
9
9
9
10
10
May
8.4
8
8
8
10
9
June
9.3
9
10
8
9
9
July
11.3
11
10
12
12
12
August
12.0
12
11
12
12
13
September
10.5
10
11
10
12
October
8.6
8
8
9
9
November
7.8
9
8
8
7
December
7.7
7
8
8
9
Average
9.5
9.7
9.0
9.3
9.7
9.8
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
204°
209°
184°
216°
187°
February
207°
203°
206°
212°
202°
March
206°
204°
206°
212°
211°
April
203°
210°
212°
205°
208°
May
204°
200°
205°
204°
206°
June
213°
212°
214°
208°
207°
July
212°
213°
209°
210°
215°
August
215°
212°
209°
212°
211°
September
212°
213°
216°
211°
October
210°
206°
214°
207°
November
205°
208°
210°
204°
December
200°
212°
200°
216°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.