Stouffville Airport

CA-0635 · Ontario, Canada

Climate Stouffville Airport 2020-2024

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

Calculated from historical METAR data of Oshawa Airport (CYOO) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 53.8 39 33 64 65 59
February 70.8 79 59 72 75 70
March 73.2 65 68 67 87 65
April 74.9 56 76 80 76 86
May 84.4 84 85 93 89
June 84.9 71 85 89 97
July 89.5 87 88 82 96
August 89.5 79 91 91 91
September 86.9 90 76 89 83
October 79.6 77 89 70 86
November 75.1 77 71 78 85
December 61.3 42 60 69 61
Average 76.7 59.0 70.9 78.3 81.3 82.2

72nd best VFR conditions of Canada

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 82.6 72 74 90 91 84
February 86.6 93 82 88 91 84
March 87.7 81 84 78 97 88
April 89.3 81 84 93 89 96
May 94.0 95 94 97 95
June 92.1 82 90 93 100
July 95.6 94 92 94 99
August 97.4 95 99 97 98
September 96.0 99 92 96 97
October 94.4 95 95 93 98
November 92.4 97 87 92 94
December 83.2 76 79 85 88
Average 90.6 81.4 88.0 90.0 93.2 94.0

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 -1.3 0 1 -3 0 1
February 1.1 4 3 0 -1 0
March 4.9 8 4 5 8 6
April 11.2 12 14 11 12 10
May 18.4 19 20 19 17
June 23.7 23 23 25 25
July 26.5 26 26 25 29
August 25.5 24 26 27 26
September 21.8 22 22 22 21
October 14.9 16 15 17 13
November 7.0 7 9 8 10
December 2.2 5 2 4 2
Average 12.2 5.8 13.6 13.4 13.8 13.4

64th highest temperature of Canada

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 -8.3 -5 -4 -14 -6 -6
February -8.8 -5 -7 -9 -9 -7
March -4.6 -1 -3 -4 -3 -2
April 2.1 4 3 2 3 1
May 7.9 7 10 7 7
June 13.3 15 11 15 14
July 16.3 16 15 16 19
August 16.1 15 17 18 16
September 12.3 13 12 12 11
October 6.5 8 4 10 5
November -1.1 -1 0 -1 2
December -5.9 0 -3 -2 -4
Average 3.5 -2.2 5.1 3.6 5.0 4.6

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 25.2 35 34 28 12 17
February 23.3 17 31 30 21 19
March 19.7 25 33 32 5 14
April 16.8 28 23 17 11 13
May 8.9 13 8 6 10
June 8.4 16 12 6 2
July 5.0 9 7 9 2
August 4.2 7 10 1 2
September 4.2 4 7 5 2
October 10.7 14 15 9 10
November 15.1 16 19 15 11
December 21.2 32 25 15 21
Average 13.8 26.6 18.9 16.6 8.9 9.4

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 8.6 8 8 9 8 8
February 9.3 8 10 11 9 9
March 9.7 10 11 9 10 9
April 9.6 10 8 10 10 10
May 7.8 6 8 8 9
June 7.4 7 7 7 8
July 6.7 6 7 7 7
August 7.0 7 7 6 7
September 7.0 7 7 8 8
October 7.7 8 7 7 8
November 8.4 9 9 8 8
December 7.8 7 9 8 8
Average 8.2 9.0 7.8 8.2 7.9 8.2

64th highest wind speed of Canada

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 263° 344° 296° 322° 285°
February 273° 291° 276° 304° 278°
March 274° 340° 275° 286° 162°
April 069° 173° 261° 317° 292°
May 203° 127° 253° 309°
June 048° 264° 211° 225°
July 231° 226° 003° 231°
August 255° 231° 207° 218°
September 173° 001° 276° 227°
October 264° 191° 074° 257°
November 263° 259° 252° 242°
December 338° 283° 254° 289°

Prevailing wind direction

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