Clayton Muni climate by month
Averages and records for each calendar month at Clayton Muni, United States, from 1896 to 2026. The warmest month is July, averaging 31.4°C; the coolest is January at 9.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 9.0°C | −6.5°C | 26.7°C10 January 1990 | −29.4°C4 January 1959 | 112 / 114 |
| February | 10.8°C | −5.2°C | 28.3°C7 February 2015 | −27.8°C11 February 1899 | 114 / 115 |
| March | 14.6°C | −2.1°C | 34.4°C26 March 2026 | −23.9°C11 March 1948 | 114 / 116 |
| April | 19.5°C | 2.7°C | 33.3°C24 April 2012 | −13.9°C4 April 1920 | 114 / 117 |
| May | 23.9°C | 7.9°C | 37.2°C27 May 1896 | −6.7°C7 May 1917 | 116 / 117 |
| June | 29.4°C | 13.2°C | 40.6°C27 June 1924 | −0.6°C2 June 1919 | 117 / 117 |
| July | 31.4°C | 15.8°C | 40.6°C30 July 1934 | 4.4°C9 July 1943 | 117 / 118 |
| August | 30.4°C | 15.2°C | 38.9°C12 August 1936 | 5.6°C23 August 1910 | 117 / 117 |
| September | 26.6°C | 11.1°C | 37.2°C3 September 1947 | −3.3°C29 September 1985 | 115 / 116 |
| October | 20.8°C | 4.8°C | 33.9°C17 October 1926 | −14.3°C30 October 2019 | 116 / 116 |
| November | 14.1°C | −1.8°C | 30.0°C8 November 2006 | −23.3°C27 November 1976 | 114 / 116 |
| December | 9.5°C | −5.7°C | 28.3°C23 December 1955 | −25.6°C21 December 1983 | 115 / 115 |
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 112 to 117 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.