Shelby/Toole Cnty Arpt climate by month
Averages and records for each calendar month at Shelby/Toole Cnty Arpt, United States, from 1958 to 1988. The warmest month is July, averaging 28.5°C; the coolest is January at −2.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −2.3°C | −14.6°C | 17.2°C30 January 1962 | −38.3°C27 January 1972 | 29 / 30 |
| February | 2.0°C | −10.9°C | 20.6°C20 February 1977 | −32.8°C10 February 1981 | 30 / 30 |
| March | 6.4°C | −6.9°C | 22.2°C22 March 1963 | −33.9°C2 March 1960 | 30 / 30 |
| April | 13.4°C | −1.6°C | 31.1°C28 April 1987 | −20.6°C6 April 1975 | 30 / 30 |
| May | 19.1°C | 3.8°C | 32.8°C21 May 1980 | −10.0°C3 May 1967 | 30 / 30 |
| June | 23.9°C | 8.4°C | 37.2°C29 June 1984 | −2.2°C13 June 1969 | 30 / 30 |
| July | 28.5°C | 10.6°C | 38.9°C19 July 1960 | 1.7°C3 July 1972 | 29 / 30 |
| August | 27.9°C | 9.6°C | 41.1°C5 August 1961 | 0.0°C30 August 1980 | 31 / 31 |
| September | 21.3°C | 4.3°C | 36.1°C1 September 1967 | −8.3°C28 September 1984 | 30 / 30 |
| October | 15.6°C | −0.3°C | 30.0°C2 October 1963 | −22.2°C30 October 1984 | 30 / 30 |
| November | 5.2°C | −7.7°C | 23.9°C3 November 1962 | −33.3°C13 November 1959 | 30 / 30 |
| December | −0.4°C | −12.5°C | 18.3°C16 December 1980 | −41.7°C24 December 1983 | 30 / 30 |
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 29 to 31 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.