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
January
91.3
88
93
98
February
88.3
96
82
89
March
85.9
86
84
90
April
84.1
85
83
84
May
89.5
90
June
98.2
98
July
92.9
93
August
September
98.0
98
98
October
97.6
97
99
November
94.3
94
95
December
96.6
96
98
Average
90.4
88.4
90.4
92.3
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
January
15.0
21
7
17
February
20.9
21
23
20
March
22.7
23
23
22
April
24.2
24
26
24
May
27.8
28
June
30.4
30
July
31.6
32
August
September
29.8
31
29
October
26.1
27
26
November
25.2
24
27
December
22.4
22
24
Average
23.5
22.2
22.5
25.7
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
6.4
15
-7
14
February
17.0
18
18
16
March
19.2
20
20
19
April
21.6
22
24
21
May
24.5
25
June
27.6
28
July
25.8
26
August
September
26.8
27
27
October
23.6
24
23
November
19.1
20
18
December
19.1
18
21
Average
19.4
18.6
17.8
21.8
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
0.0
0
0
0
February
0.0
0
0
0
March
0.0
0
0
0
April
0.0
0
0
0
May
0.0
0
June
0.0
0
July
0.0
0
August
September
0.0
0
0
October
0.0
0
0
November
0.0
0
0
December
0.0
0
0
Average
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
January
12.4
13
12
18
February
11.0
10
12
11
March
11.6
12
12
10
April
11.9
12
11
12
May
7.7
8
June
5.7
6
July
5.7
6
August
September
8.3
7
10
October
9.8
10
9
November
13.8
13
14
December
11.5
11
12
Average
11.0
11.7
11.2
10.0
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
097°
151°
235°
February
151°
161°
052°
March
095°
120°
145°
April
140°
160°
105°
May
146°
June
140°
July
205°
August
September
050°
027°
October
064°
059°
November
036°
050°
December
057°
110°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.