Flag Island Weather Station

KFGN · United States

Climate Flag Island Weather Station 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Flag Island Weather Station (KFGN) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 49.1 38 41 71 0 76
February 73.6 58 84 70 86 94
March 81.7 75 80 78 100 94
April 83.7 78 70 97
May 87.5 88 82 98
June 63.2 54 100 100 94
July 81.9 88 83
August 58.9 77 48 9
September 52.5 18 92 0
October 52.8 66 74 63 0
November 50.6 59 64 75 0
December 50.4 51 53 62 0
Average 67.2 58.8 66.3 73.1 64.2 52.7

VFR conditions during daylight period

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 66.0 63 71 86 0 85
February 85.2 79 93 78 100 94
March 90.9 88 89 89 100 95
April 92.6 91 83 98
May 95.5 96 91 98
June 71.2 70 100 100 95
July 88.7 93 85
August 68.2 93 67 9
September 59.4 20 94 0
October 72.4 91 97 85 0
November 74.4 89 88 94 0
December 65.0 68 74 76 0
Average 79.6 77.6 80.4 86.6 76.0 53.4

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 -10.5 -8 -8 -13 -6 -9
February -8.4 -1 -6 -13 -3 -7
March -1.1 0 -3 -2 0 1
April 5.2 4 3 5
May 15.5 19 14 15
June 21.6 24 17 21 22
July 24.3 23 25
August 22.7 22 20 24
September 17.7 20 20 17
October 8.7 10 8 13 6
November -1.6 2 1 2 2
December -6.1 0 -7 -6 -4
Average 4.9 -3.0 9.1 -1.3 5.3 7.7

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 -15 -15 -23 -14 -14
February -18.0 -10 -16 -25 -14 -18
March -11.2 -10 -13 -11 -14 -11
April -3.1 -3 -3 -3
May 7.2 9 5 7
June 15.0 18 7 21 15
July 17.3 15 18
August 16.4 17 13 17
September 11.5 12 13 10
October 4.0 6 2 8 1
November -6.2 -4 -4 -4 -5
December -13.4 -6 -13 -15 -11
Average -3.5 -12.2 1.9 -9.1 -2.3 0.2

20th lowest temperature of United States

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 11.4 13 16 17 0 19
February 15.3 12 7 23 21 5
March 7.0 14 13 6 0 5
April 9.9 11 21 6
May 5.4 3 5 7
June 4.4 5 3 0 6
July 3.5 3 2
August 2.7 5 5 0
September 3.8 1 3 0
October 8.6 11 11 7 0
November 10.1 12 11 8 0
December 12.1 5 17 18 0
Average 8.6 13.1 6.9 12.7 6.8 3.1

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 7.9 7 6 9 7 8
February 9.1 8 10 10 9 9
March 9.3 11 10 9 6 9
April 8.8 9 10 9
May 8.2 8 8 9
June 7.4 6 11 21 9
July 7.3 7 8
August 5.4 5 6 6
September 8.4 7 8 9
October 10.0 9 11 9 10
November 11.1 11 11 11 10
December 8.0 7 9 8 8
Average 8.6 8.9 7.7 9.5 8.6 8.6

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 267° 248° 281° 238° 221°
February 297° 285° 299° 224° 260°
March 330° 011° 301° 218° 228°
April 036° 016° 305°
May 108° 211° 310°
June 110° 294° 311° 230°
July 303° 241°
August 268° 304° 256°
September 149° 253° 276°
October 335° 284° 159° 268°
November 279° 275° 260° 222°
December 197° 353° 254° 262°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.