Harrison/Boone Cnty weather by month
Averages and records for each calendar month at Harrison/Boone Cnty, United States, from 1948 to 2026. The warmest month is July, averaging 31.7°C; the coolest is January at 7.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 7.7°C | −3.3°C | 26.1°C25 January 1950 | −25.0°C20 January 1985 | 68 / 68 |
| February | 10.3°C | −1.3°C | 30.6°C12 February 1962 | −22.7°C16 February 2021 | 68 / 68 |
| March | 15.6°C | 3.4°C | 35.6°C22 March 2026 | −22.8°C12 March 1948 | 68 / 68 |
| April | 21.1°C | 8.6°C | 33.3°C20 April 1987 | −5.6°C14 April 1950 | 68 / 68 |
| May | 24.7°C | 13.3°C | 34.4°C30 May 1998 | 0.0°C3 May 2013 | 68 / 68 |
| June | 29.1°C | 17.7°C | 41.7°C28 June 2012 | 7.8°C5 June 1950 | 68 / 68 |
| July | 31.7°C | 20.1°C | 41.7°C29 July 1986 | 10.0°C22 July 1970 | 68 / 68 |
| August | 31.1°C | 19.1°C | 44.4°C3 August 2011 | 8.9°C29 August 1986 | 68 / 68 |
| September | 27.1°C | 15.0°C | 39.4°C1 September 2000 | 0.6°C30 September 1949 | 67 / 68 |
| October | 21.6°C | 9.1°C | 33.3°C10 October 1963 | −6.1°C31 October 1993 | 67 / 67 |
| November | 14.9°C | 3.5°C | 29.4°C15 November 2025 | −13.3°C29 November 1976 | 67 / 67 |
| December | 9.5°C | −1.1°C | 29.4°C27 December 2025 | −23.9°C23 December 1989 | 67 / 67 |
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 67 to 68 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.