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
January
100.0
100
100
100
February
100.0
100
100
100
March
100.0
100
100
100
April
100.0
100
100
May
100.0
100
100
June
97.2
100
95
July
94.4
100
88
August
92.8
96
89
September
97.7
94
100
October
100.0
100
100
November
100.0
100
100
December
100.0
100
100
Average
98.6
100.0
98.9
96.9
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
January
19.0
22
17
18
February
17.3
19
16
16
March
20.7
21
16
26
April
25.1
23
27
May
28.2
27
32
June
32.7
31
34
July
34.5
36
33
August
33.4
36
31
September
31.1
32
30
October
28.8
32
26
November
21.7
24
20
December
21.6
24
19
Average
24.8
20.6
26.8
27.1
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
14.5
16
12
16
February
14.8
17
13
15
March
17.7
17
15
22
April
20.3
16
24
May
24.8
23
29
June
27.7
27
29
July
30.9
32
30
August
29.8
31
29
September
27.5
29
27
October
24.2
26
22
November
17.9
20
16
December
19.6
21
18
Average
21.0
16.5
22.8
23.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
0.0
0
0
0
February
13.3
8
30
0
March
2.5
6
0
0
April
0.0
0
0
May
0.0
0
0
June
2.7
0
5
July
2.7
0
6
August
12.5
7
18
September
8.8
13
7
October
0.0
0
0
November
0.0
0
0
December
0.0
0
0
Average
4.2
4.6
3.5
4.6
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
January
3.7
5
3
4
February
5.7
4
9
5
March
5.0
6
7
4
April
4.4
5
4
May
5.5
5
6
June
5.5
5
6
July
9.0
9
9
August
5.8
6
5
September
7.0
6
8
October
5.6
6
6
November
4.0
5
3
December
2.5
3
2
Average
5.2
4.6
5.5
5.6
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
265°
251°
222°
February
214°
333°
233°
March
203°
213°
209°
April
231°
212°
May
194°
224°
June
192°
200°
July
191°
124°
August
150°
148°
September
151°
113°
October
196°
090°
November
111°
182°
December
169°
225°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.