Jefferson City Mem climate by month
Averages and records for each calendar month at Jefferson City Mem, United States, from 1997 to 2026. The warmest month is July, averaging 31.7°C; the coolest is January at 5.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.4°C | −5.1°C | 25.0°C28 January 2013 | −25.5°C7 January 2014 | 29 / 29 |
| February | 8.3°C | −3.4°C | 28.3°C27 February 2024 | −24.3°C10 February 2011 | 29 / 29 |
| March | 14.8°C | 2.3°C | 35.0°C26 March 2026 | −17.8°C12 March 1998 | 29 / 29 |
| April | 20.5°C | 7.6°C | 33.9°C3 April 2011 | −5.6°C5 April 2002 | 29 / 29 |
| May | 25.1°C | 13.3°C | 35.6°C26 May 2012 | 1.1°C3 May 2005 | 25 / 29 |
| June | 29.8°C | 18.6°C | 41.7°C28 June 2012 | 8.9°C6 June 1998 | 29 / 29 |
| July | 31.7°C | 20.7°C | 40.6°C5 July 2012 | 11.1°C5 July 1997 | 29 / 30 |
| August | 30.8°C | 19.4°C | 42.8°C2 August 2011 | 9.4°C13 August 2004 | 30 / 30 |
| September | 27.5°C | 14.6°C | 37.8°C5 September 2026 | 2.2°C30 September 1999 | 29 / 30 |
| October | 21.0°C | 8.0°C | 35.0°C3 October 2006 | −4.3°C24 October 2006 | 29 / 29 |
| November | 14.2°C | 2.0°C | 29.4°C9 November 2022 | −11.6°C18 November 2014 | 29 / 29 |
| December | 7.8°C | −2.8°C | 25.6°C15 December 2021 | −19.9°C19 December 2016 | 29 / 29 |
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 25 to 30 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.