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
64.9
95
95
0
February
56.6
97
70
0
March
87.6
96
96
0
April
98.7
99
May
100.0
100
June
98.3
99
97
July
99.7
100
100
August
99.4
100
99
September
99.5
99
100
October
99.1
98
100
November
96.2
94
99
December
95.8
97
93
Average
89.2
96.1
95.6
75.8
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
19.3
19
21
18
February
20.2
20
21
20
March
22.3
22
23
21
April
23.6
24
May
27.4
27
June
30.1
29
32
July
30.8
32
31
August
31.1
32
30
September
30.4
31
30
October
25.9
26
26
November
22.8
23
23
December
21.3
20
23
Average
23.7
20.5
25.4
25.4
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
14.3
14
17
13
February
15.6
16
17
14
March
18.4
18
19
18
April
20.7
21
May
24.5
25
June
26.7
27
27
July
28.0
29
28
August
27.8
30
26
September
26.6
27
27
October
22.7
23
22
November
18.9
19
19
December
17.0
16
19
Average
19.6
15.6
21.9
21.3
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
0.0
0
0
0
March
0.0
0
0
0
April
0.0
0
May
0.0
0
June
0.0
0
0
July
0.0
0
0
August
0.0
0
0
September
0.0
0
0
October
0.0
0
0
November
0.0
0
0
December
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
January
12.3
14
11
11
February
11.2
10
12
12
March
10.7
12
10
8
April
10.8
11
May
6.5
7
June
7.9
9
5
July
5.6
4
6
August
6.4
7
6
September
5.4
5
6
October
8.6
10
7
November
9.7
10
10
December
11.0
13
9
Average
9.7
11.9
9.3
7.8
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
096°
146°
019°
February
126°
143°
096°
March
106°
145°
122°
April
109°
May
106°
June
247°
334°
July
327°
198°
August
313°
175°
September
075°
044°
October
080°
093°
November
069°
077°
December
059°
119°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.