Ionia Cnty Arpt climate by month
Averages and records for each calendar month at Ionia Cnty Arpt, United States, from 1896 to 2013. The warmest month is July, averaging 28.6°C; the coolest is January at −1.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.0°C | −9.7°C | 18.3°C26 January 1950 | −31.7°C15 January 1963 | 69 / 73 |
| February | 0.5°C | −9.5°C | 20.6°C12 February 1999 | −31.7°C12 February 1899 | 70 / 73 |
| March | 6.3°C | −4.6°C | 30.0°C22 March 2012 | −26.1°C8 March 1943 | 68 / 74 |
| April | 14.5°C | 1.5°C | 31.1°C29 April 1899 | −14.4°C7 April 1982 | 72 / 75 |
| May | 21.2°C | 7.4°C | 35.0°C28 May 1977 | −7.2°C6 May 1989 | 71 / 74 |
| June | 26.4°C | 12.6°C | 38.9°C19 June 1953 | −1.7°C2 June 1897 | 75 / 76 |
| July | 28.6°C | 14.8°C | 39.4°C6 July 1988 | 2.8°C11 July 1945 | 69 / 75 |
| August | 27.5°C | 13.8°C | 39.4°C5 August 1947 | 2.2°C29 August 1982 | 74 / 76 |
| September | 23.2°C | 9.5°C | 36.7°C9 September 1897 | −3.9°C21 September 1897 | 73 / 76 |
| October | 16.7°C | 3.9°C | 31.7°C1 October 1897 | −8.9°C25 October 1960 | 73 / 78 |
| November | 8.1°C | −1.1°C | 26.1°C1 November 1950 | −21.7°C30 November 1958 | 72 / 76 |
| December | 1.3°C | −6.5°C | 20.0°C6 December 2001 | −25.6°C24 December 1896 | 71 / 75 |
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 68 to 75 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.