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
94.4
89
97
98
February
94.7
93
93
98
March
97.2
96
99
97
April
88.2
100
77
May
98.1
99
98
June
97.2
96
98
July
99.2
99
100
August
97.2
97
98
September
96.3
97
96
October
94.7
97
92
November
96.2
99
93
December
90.0
95
82
Average
94.9
93.0
97.3
94.5
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.