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
84.1
87
77
91
February
90.0
92
91
87
March
95.4
96
95
96
April
96.7
94
100
May
100.0
100
100
June
99.6
99
100
July
100.0
100
100
August
99.5
100
99
September
99.8
100
100
October
98.9
98
100
November
94.4
96
94
December
73.0
75
71
Average
93.8
91.7
94.1
95.8
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.