Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi 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
2021
2020
January
98.1
97
100
96
100
98
February
97.6
97
98
93
99
98
March
99.0
98
100
99
99
100
April
98.3
99
92
100
99
99
May
98.6
100
98
99
100
95
June
97.6
94
97
96
99
99
July
99.0
99
97
99
99
99
August
98.7
98
98
100
100
98
September
98.0
100
96
96
99
98
October
98.2
97
97
99
97
November
96.0
92
94
96
95
December
98.2
97
98
99
99
Average
98.2
97.9
96.8
97.2
99.0
97.9
Marginal VFR conditions or better during daylight period
Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi 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
2021
2020
January
24.5
25
26
24
25
25
February
26.2
25
27
26
27
26
March
26.9
28
28
27
27
27
April
28.6
29
29
28
29
30
May
29.9
32
30
30
30
29
June
31.0
31
31
31
31
31
July
32.2
32
33
32
32
32
August
32.1
32
33
32
32
33
September
31.4
32
32
32
31
32
October
29.8
30
29
30
31
November
27.3
27
28
26
28
December
25.5
24
27
27
25
Average
28.9
29.6
29.1
28.9
28.7
29.0
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
2021
2020
January
17.0
18
19
15
17
18
February
19.7
17
21
20
20
19
March
20.0
22
21
21
19
22
April
22.4
23
23
23
22
23
May
23.9
26
23
24
24
23
June
25.1
26
24
24
25
26
July
25.8
25
26
27
25
26
August
26.3
26
26
27
27
27
September
25.2
26
25
26
25
26
October
24.4
24
23
24
25
November
21.1
21
22
20
23
December
18.7
19
21
20
17
Average
22.6
23.2
22.5
22.7
22.2
22.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
3.0
4
0
4
0
2
February
3.3
4
3
4
2
8
March
2.3
4
1
5
1
1
April
2.9
1
10
3
1
2
May
4.3
1
3
2
1
12
June
6.3
8
7
7
8
3
July
3.3
3
4
2
5
6
August
4.6
4
5
2
3
3
September
5.6
6
7
8
5
8
October
5.0
4
5
4
12
November
6.6
8
8
8
10
December
3.5
11
1
2
1
Average
4.2
3.9
5.1
4.2
3.2
5.7
Precipitation during daylight period
Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.
Wind speed (knots)
Month
Average
2024
2023
2022
2021
2020
January
9.6
10
9
9
8
11
February
10.2
9
10
10
11
11
March
10.6
10
10
12
11
11
April
10.9
11
11
11
11
10
May
10.0
9
8
10
11
10
June
8.2
9
7
8
10
9
July
8.2
8
7
11
8
9
August
8.8
9
9
10
10
9
September
8.4
9
7
8
7
9
October
9.7
9
8
9
10
November
9.0
9
9
8
12
December
9.4
11
8
8
9
Average
9.4
9.3
8.9
9.4
9.3
9.9
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
2021
2020
January
119°
121°
026°
135°
100°
February
127°
131°
094°
152°
125°
March
120°
117°
118°
120°
113°
April
105°
115°
105°
113°
146°
May
122°
094°
114°
100°
109°
June
107°
159°
133°
125°
116°
July
115°
128°
122°
124°
116°
August
124°
124°
116°
116°
120°
September
133°
092°
114°
106°
115°
October
051°
056°
082°
102°
November
071°
072°
026°
082°
December
080°
054°
109°
078°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.