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
98.7
100
97
99
February
94.5
95
94
95
March
96.4
93
97
99
April
99.2
99
100
May
98.9
99
99
June
99.2
99
100
July
100.0
100
100
August
99.1
99
100
September
99.7
100
100
October
96.5
96
98
November
99.1
98
100
December
91.7
90
95
Average
97.3
95.6
97.6
98.9
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.