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
92.8
88
94
97
February
97.0
92
100
100
March
93.8
96
93
93
April
98.1
100
97
May
99.6
100
100
June
99.7
100
100
July
100.0
100
100
August
100.0
100
100
September
98.8
99
99
October
96.0
94
98
November
91.4
90
93
December
86.8
90
82
Average
95.3
91.8
96.9
97.1
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.