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
January
86.7
70
92
98
February
93.1
83
100
97
March
89.4
84
97
88
April
96.3
96
100
93
May
98.2
97
100
June
97.8
96
100
July
100.0
100
100
August
100.0
100
100
September
96.1
94
98
October
91.3
87
96
November
76.4
72
81
December
66.4
82
47
Average
90.6
84.0
93.8
94.1
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.