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
91.6
91
96
90
February
98.4
100
97
98
March
98.2
93
100
100
April
98.8
100
96
100
May
97.0
99
96
June
98.0
100
97
July
95.6
96
95
August
96.4
97
96
September
95.9
96
96
October
96.3
96
97
November
92.3
92
95
December
91.7
91
95
Average
96.2
96.0
96.0
96.5
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.