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
99.2
100
98
99
February
100.0
100
100
100
March
100.0
100
100
100
April
98.7
100
98
May
99.4
100
99
June
100.0
100
100
July
99.4
100
99
August
97.2
97
97
September
100.0
100
100
October
100.0
100
100
November
100.0
100
100
December
100.0
100
100
Average
99.6
100.0
99.7
99.2
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.