Hamilton/Butler Cnty climate by month
Averages and records for each calendar month at Hamilton/Butler Cnty, United States, from 1997 to 2026. The warmest month is July, averaging 30.3°C; the coolest is January at 4.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.2°C | −5.8°C | 21.1°C3 January 2004 | −28.3°C28 January 2026 | 29 / 29 |
| February | 6.8°C | −4.7°C | 26.7°C24 February 2017 | −28.8°C24 February 2015 | 29 / 29 |
| March | 12.9°C | 0.3°C | 31.7°C22 March 2026 | −17.7°C9 March 2008 | 29 / 29 |
| April | 19.4°C | 5.6°C | 33.3°C19 April 2002 | −6.6°C2 April 2013 | 29 / 29 |
| May | 24.2°C | 11.3°C | 33.3°C30 May 2006 | −2.7°C9 May 2020 | 29 / 29 |
| June | 28.5°C | 15.9°C | 38.3°C28 June 2012 | 4.4°C2 June 2003 | 30 / 30 |
| July | 30.3°C | 18.2°C | 40.6°C7 July 2012 | 8.9°C4 July 2014 | 30 / 30 |
| August | 29.9°C | 17.0°C | 38.9°C30 August 2024 | 6.1°C27 August 2025 | 30 / 30 |
| September | 26.8°C | 12.4°C | 37.8°C2 September 2011 | 1.1°C22 September 1999 | 29 / 30 |
| October | 20.0°C | 5.9°C | 35.0°C2 October 2019 | −6.1°C23 October 1997 | 28 / 29 |
| November | 12.9°C | 0.0°C | 28.3°C1 November 2016 | −13.8°C21 November 2014 | 29 / 29 |
| December | 6.7°C | −3.4°C | 22.8°C3 December 2012 | −28.3°C25 December 2004 | 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 28 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.