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
97.2
99
100
93
February
97.0
99
94
98
March
95.3
98
100
88
April
98.7
99
99
May
99.5
99
100
June
99.7
100
100
July
99.2
99
100
August
99.7
100
100
September
99.5
100
100
October
98.5
100
98
November
98.8
100
98
December
99.1
100
98
Average
98.4
98.5
99.0
97.6
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.