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
82.6
99
55
February
98.6
99
99
March
98.4
98
99
April
86.5
100
53
May
96.2
100
91
June
96.9
98
95
July
80.5
100
50
August
88.5
100
75
September
96.5
99
94
October
97.2
99
95
November
98.1
100
95
December
90.4
97
76
Average
94.5
98.5
96.7
82.8
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.