McElroy Heliport

CO74 · Colorado, United States

Climate McElroy Heliport 2020-2024

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

Calculated from historical METAR data of McElroy Airfield (K20V) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 79.2 73 80 78 90
February 87.3 87 85 88 87
March 90.5 87 90 83 0
April 92.9 91 94 90
May 94.1 97 89 96
June 98.3 96 98 100
July 98.4 97 97 100 100
August 96.4 97 94 100 95
September 96.7 96 98 96 99
October 90.2 93 92 94 87
November 93.3 92 97 94 91
December 81.4 71 86 73 86
Average 89.3 79.9 90.8 92.4 92.0 92.5

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 87.2 80 90 83 95
February 91.4 90 88 90 94
March 94.6 91 93 91 0
April 96.9 96 97 96
May 96.8 100 93 98
June 99.2 99 99 100
July 99.1 98 99 100 100
August 97.0 99 94 100 96
September 97.4 97 98 97 99
October 94.5 97 95 98 89
November 96.3 96 99 97 93
December 87.8 76 92 85 93
Average 94.0 84.9 94.3 94.8 96.1 94.5

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 -3.6 -4 -2 -8 -1
February 0.9 -1 -4 -3 1
March 7.1 2 2 5 2
April 13.7 10 12 13
May 19.9 19 18 18
June 26.5 22 25 27
July 29.5 29 28 29 27
August 27.6 27 27 22 30
September 24.5 24 25 24 24
October 15.0 16 14 14 16
November 7.5 8 4 10 6
December -1.9 -2 -4 2 -1
Average 10.0 -3.3 12.3 12.3 13.4 15.7

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 -14.1 -16 -13 -21 -15
February -12.6 -14 -18 -20 -10
March -8.9 -11 -12 -9 2
April -3.6 -5 -3 -4
May 1.7 1 1 1
June 5.4 4 4 5
July 9.0 7 9 9 8
August 6.7 7 8 12 5
September 2.2 1 3 2 1
October -3.3 -4 -3 -2 -5
November -7.3 -8 -10 -5 -8
December -14.3 -14 -18 -11 -16
Average -5.1 -15.1 -5.8 -5.2 -4.7 -4.5

57th 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 13.7 13 16 20 8
February 11.0 10 12 11 11
March 7.0 10 8 11 0
April 6.5 7 7 7
May 5.8 5 8 5
June 1.9 4 2 1
July 3.2 2 4 2 7
August 3.0 2 5 9 1
September 3.0 2 4 6 3
October 6.3 6 4 4 8
November 4.5 4 5 5 3
December 13.0 17 8 20 10
Average 6.6 11.4 6.8 6.5 6.7 4.9

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 2.9 3 3 3 2
February 4.9 3 4 2 6
March 5.0 5 3 4 0
April 7.2 7 9 6
May 5.6 5 8 6
June 5.2 5 5 4
July 3.7 4 3 4 4
August 3.9 4 3 2 4
September 4.3 4 4 4 5
October 4.7 4 4 4 6
November 4.6 3 5 5 5
December 2.9 1 3 5 2
Average 4.5 2.9 4.2 4.3 4.5 4.5

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 282° 254° 257° 287°
February 272° 245° 251° 260°
March 276° 323° 254° 360°
April 267° 269° 277°
May 255° 252° 264°
June 247° 256° 289°
July 298° 263° 322° 335°
August 263° 269° 246° 279°
September 254° 280° 278° 294°
October 264° 275° 263° 266°
November 242° 259° 260° 260°
December 264° 279° 251° 289°

Prevailing wind direction

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