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
83.9
88
88
88
93
February
86.6
96
86
90
74
89
March
89.7
84
90
88
90
88
April
93.4
90
97
94
95
May
93.5
90
94
94
95
June
92.6
95
91
91
93
July
94.1
94
97
90
97
August
93.3
96
97
90
94
September
89.9
87
97
84
91
October
91.9
93
93
91
89
November
87.9
85
89
92
89
December
81.9
88
72
77
93
Average
90.2
88.9
90.3
92.0
88.3
92.4
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
18.1
21
18
18
20
February
22.8
21
25
22
21
21
March
24.4
24
25
25
24
27
April
26.9
27
27
26
27
May
30.4
29
31
30
29
June
31.7
31
33
31
31
July
32.4
33
32
31
33
August
32.3
33
33
32
32
September
30.8
30
30
30
30
October
28.4
27
27
27
28
November
21.6
22
24
21
25
December
19.7
23
18
23
18
Average
26.2
22.5
27.1
26.8
26.1
26.9
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
6.1
8
5
7
8
February
10.1
7
12
9
9
8
March
10.6
11
12
10
11
14
April
13.4
13
14
12
15
May
17.1
17
17
15
17
June
21.1
21
22
20
21
July
22.8
24
23
22
23
August
22.5
23
22
23
23
September
20.1
18
21
20
22
October
16.1
14
12
16
19
November
10.0
10
13
7
14
December
8.5
15
7
12
4
Average
14.3
9.3
15.0
14.7
14.5
15.7
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.0
0
0
0
0
February
0.0
0
0
0
0
0
March
0.0
0
0
0
0
0
April
0.0
0
0
0
0
May
0.0
0
0
0
0
June
0.0
0
0
0
0
July
0.0
0
0
0
0
August
0.0
0
0
0
0
September
0.0
0
0
0
0
October
0.0
0
0
0
0
November
0.0
0
0
0
0
December
0.0
0
0
0
0
Average
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
4.5
5
4
4
4
February
4.6
5
5
4
4
5
March
4.8
4
5
4
5
5
April
4.1
5
2
3
4
May
3.8
3
4
4
4
June
2.9
4
3
3
3
July
2.3
2
3
2
3
August
2.3
2
3
2
2
September
3.2
2
4
2
4
October
4.0
3
4
3
4
November
4.2
4
6
3
5
December
3.8
1
3
3
3
Average
3.7
4.0
3.6
3.6
3.0
3.7
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
251°
308°
258°
360°
February
253°
233°
009°
293°
276°
March
034°
245°
227°
079°
206°
April
033°
224°
299°
248°
May
260°
248°
073°
008°
June
238°
016°
194°
007°
July
248°
192°
190°
250°
August
315°
277°
136°
158°
September
023°
016°
018°
035°
October
012°
001°
338°
031°
November
006°
013°
354°
025°
December
143°
021°
250°
303°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.