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
91.2
95
91
88
February
80.6
77
75
89
March
86.2
86
90
83
April
92.9
89
97
May
90.1
85
96
June
92.1
89
95
July
97.1
96
99
August
95.0
96
94
September
93.7
92
95
October
96.4
98
95
November
93.3
93
93
December
86.7
87
87
Average
89.9
86.0
90.3
93.4
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.
Maximum temperatures (°C)
Month
Average
2024
2023
2022
January
8.1
8
9
8
February
10.1
11
9
10
March
11.6
12
11
12
April
12.7
12
13
May
16.7
16
18
June
21.3
22
21
July
23.0
22
24
August
22.8
21
24
September
21.1
23
20
October
17.6
18
18
November
11.9
11
13
December
8.2
10
5
Average
13.8
10.3
15.3
15.9
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.