McKinney Muni climate by month
Averages and records for each calendar month at McKinney Muni, United States, from 1903 to 2026. The warmest month is August, averaging 35.8°C; the coolest is January at 13.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.3°C | 0.5°C | 30.6°C23 January 1943 | −21.7°C18 January 1930 | 96 / 97 |
| February | 16.0°C | 2.6°C | 35.0°C25 February 1918 | −20.6°C2 February 1951 | 92 / 95 |
| March | 20.4°C | 6.6°C | 36.1°C24 March 1929 | −13.9°C3 March 1943 | 91 / 94 |
| April | 25.0°C | 11.6°C | 37.8°C19 April 2006 | −7.2°C1 April 1991 | 92 / 95 |
| May | 28.5°C | 16.1°C | 40.6°C28 May 1927 | −2.8°C1 May 1903 | 89 / 92 |
| June | 32.8°C | 20.4°C | 42.2°C21 June 1918 | 6.7°C1 June 1903 | 92 / 94 |
| July | 35.4°C | 22.2°C | 44.4°C11 July 1933 | 10.0°C5 July 1924 | 92 / 94 |
| August | 35.8°C | 21.9°C | 47.8°C10 August 1936 | 11.7°C31 August 1915 | 94 / 95 |
| September | 31.8°C | 18.2°C | 43.3°C2 September 1939 | 3.9°C30 September 1916 | 92 / 97 |
| October | 26.5°C | 12.3°C | 37.2°C2 October 1921 | −9.4°C30 October 1917 | 90 / 93 |
| November | 19.7°C | 6.3°C | 33.3°C2 November 1935 | −11.7°C11 November 1950 | 91 / 92 |
| December | 14.6°C | 1.9°C | 31.7°C24 December 1955 | −20.0°C23 December 1989 | 90 / 92 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 89 to 96 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.