Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km 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
0
0
0
0
February
94.3
94
98
93
92
March
90.3
92
98
86
0
77
April
78.2
80
79
76
0
May
0
0
June
0
0
July
0
0
0
August
69.3
49
87
78
September
81.6
79
82
83
October
87.5
88
88
96
November
0
0
0
December
0
0
0
Average
84.8
90.2
86.6
85.3
88.5
81.5
Marginal VFR conditions or better during daylight period
Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.