Marion Muni climate by month
Averages and records for each calendar month at Marion Muni, United States, from 1998 to 2026. The warmest month is July, averaging 28.8°C; the coolest is January at 1.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.2°C | −7.1°C | 19.4°C12 January 2020 | −30.5°C16 January 2009 | 28 / 28 |
| February | 3.2°C | −6.0°C | 23.3°C24 February 2017 | −25.5°C11 February 2014 | 28 / 28 |
| March | 9.6°C | −1.3°C | 28.9°C22 March 2012 | −19.3°C6 March 2015 | 27 / 28 |
| April | 16.9°C | 4.4°C | 29.4°C19 April 2002 | −7.1°C7 April 2007 | 28 / 28 |
| May | 22.4°C | 10.3°C | 33.9°C28 May 2012 | −2.2°C4 May 2005 | 28 / 29 |
| June | 27.0°C | 15.5°C | 38.3°C28 June 2012 | 3.9°C2 June 2003 | 27 / 29 |
| July | 28.8°C | 17.2°C | 36.1°C31 July 1999 | 7.8°C2 July 2007 | 28 / 28 |
| August | 27.8°C | 16.0°C | 35.6°C1 August 2002 | 6.7°C31 August 2009 | 28 / 28 |
| September | 24.9°C | 12.0°C | 35.6°C10 September 2013 | 0.6°C24 September 2012 | 27 / 28 |
| October | 17.9°C | 6.2°C | 32.2°C1 October 2019 | −6.0°C30 October 2008 | 27 / 28 |
| November | 10.6°C | 0.6°C | 26.1°C1 November 2016 | −15.5°C13 November 2019 | 28 / 28 |
| December | 3.9°C | −4.0°C | 21.1°C6 December 1998 | −27.2°C25 December 2004 | 27 / 28 |
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 27 to 28 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.