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
89.9
85
86
99
February
98.3
95
100
100
March
94.1
94
96
93
April
99.2
100
99
May
99.3
99
100
June
99.3
99
100
July
100.0
100
100
August
99.6
100
99
September
99.0
98
100
October
95.7
94
98
November
84.9
78
92
December
85.5
91
75
Average
94.8
91.4
95.5
97.4
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.