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
97.1
96
98
February
96.7
100
94
March
100.0
100
100
April
99.4
100
99
May
98.5
99
98
June
99.8
100
100
July
99.8
100
100
August
99.8
100
100
September
99.2
99
100
October
99.7
99
100
November
99.8
100
100
December
99.2
99
99
Average
99.2
98.6
99.0
99.4
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.