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
91.1
84
96
87
February
87.3
96
90
93
83
March
88.4
80
90
92
90
April
89.4
80
83
98
88
May
97.8
98
98
97
June
96.7
97
98
94
July
92.5
96
51
96
August
95.8
99
70
97
September
97.2
98
98
October
94.8
94
November
97.7
100
99
December
90.6
97
99
93
Average
92.2
86.3
93.5
92.3
93.4
91.5
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
20.8
20
22
22
February
22.7
22
22
23
22
March
23.0
22
23
23
25
April
24.7
24
23
25
26
May
27.7
27
28
28
June
30.8
30
29
31
July
31.3
32
20
32
August
32.3
33
24
34
September
30.6
30
28
October
27.5
26
November
23.2
21
23
December
22.6
19
24
23
Average
25.4
21.4
26.0
24.7
22.8
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
2021
2020
January
16.3
15
18
17
February
18.3
18
19
16
17
March
19.0
19
19
19
19
April
21.2
21
21
22
22
May
23.8
25
24
23
June
26.4
26
27
27
July
26.3
28
16
27
August
27.0
28
19
28
September
26.8
27
24
October
24.4
24
November
18.5
18
19
December
18.4
16
20
20
Average
21.4
17.7
22.6
21.1
20.1
22.2
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
February
0.0
0
0
0
0
March
0.0
0
0
0
0
April
0.0
0
0
0
0
May
0.0
0
0
0
June
0.0
0
0
0
July
0.0
0
0
0
August
0.0
0
0
0
September
0.0
0
0
October
0.0
0
November
0.0
0
0
December
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
10.0
13
10
10
February
10.3
11
10
9
9
March
9.5
11
11
10
3
April
10.9
12
13
13
7
May
7.6
7
9
0
June
5.8
8
6
0
July
3.7
5
3
0
August
5.4
5
6
0
September
9.1
8
11
October
12.4
12
November
9.6
15
13
December
9.4
11
9
11
Average
8.9
11.6
9.4
9.5
10.8
3.4
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
114°
147°
091°
February
154°
142°
121°
118°
March
118°
142°
131°
155°
April
123°
098°
120°
083°
May
060°
149°
360°
June
218°
255°
360°
July
258°
150°
360°
August
074°
122°
360°
September
082°
036°
October
090°
November
046°
064°
December
093°
109°
130°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.