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
98.7
100
100
96
February
98.2
97
100
98
March
95.0
95
95
94
April
87.0
91
80
May
95.9
100
91
June
97.7
100
94
July
98.6
99
98
August
98.8
99
99
September
100.0
100
100
October
95.2
95
96
November
99.4
99
100
December
92.6
99
77
Average
96.5
97.0
98.0
94.4
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
January
23.7
25
24
23
February
24.5
26
26
22
March
25.3
27
26
23
April
25.6
27
25
May
27.5
30
26
June
29.8
31
29
July
31.2
32
31
August
30.8
32
30
September
31.8
33
30
October
29.5
31
28
November
28.2
29
27
December
25.7
28
23
Average
27.1
25.8
28.9
26.5
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
16.5
18
15
17
February
16.3
18
17
14
March
16.5
17
17
16
April
18.4
19
18
May
22.0
23
21
June
25.8
26
26
July
26.4
27
26
August
26.0
27
26
September
26.1
27
26
October
24.7
26
24
November
19.8
22
17
December
18.0
19
16
Average
20.1
17.6
22.0
20.7
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
3.5
8
0
0
March
0.0
0
0
0
April
0.0
0
0
May
0.0
0
0
June
1.5
0
4
July
4.8
3
8
August
1.7
1
3
September
0.0
0
0
October
7.5
9
4
November
0.5
1
0
December
0.0
0
0
Average
1.8
2.6
1.3
1.5
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
2.9
2
3
4
February
3.1
3
4
3
March
4.7
4
5
5
April
4.0
4
4
May
5.0
6
4
June
5.5
6
5
July
3.8
3
5
August
3.4
3
4
September
2.7
3
3
October
3.3
4
3
November
2.8
2
4
December
2.1
2
3
Average
3.6
3.3
3.5
3.8
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
298°
273°
272°
February
272°
277°
275°
March
278°
268°
277°
April
265°
260°
May
272°
249°
June
259°
275°
July
270°
254°
August
278°
282°
September
289°
303°
October
180°
310°
November
286°
309°
December
312°
309°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.