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
95.8
98
94
February
91.3
92
91
March
94.2
90
98
April
98.0
99
97
May
98.9
99
99
June
97.3
98
97
July
90.3
87
94
August
91.7
93
91
September
92.9
93
92
October
96.0
96
96
November
98.9
99
99
December
97.5
97
98
Average
94.7
93.3
95.3
95.5
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.