Buffalo/Johnson Cnty weather by month
Averages and records for each calendar month at Buffalo/Johnson Cnty, United States, from 1998 to 2026. The warmest month is July, averaging 30.2°C; the coolest is February at 2.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.7°C | −8.1°C | 19.4°C26 January 2015 | −31.6°C15 January 2024 | 26 / 28 |
| February | 2.6°C | −8.9°C | 20.6°C6 February 2015 | −29.9°C6 February 2014 | 28 / 28 |
| March | 8.5°C | −3.8°C | 27.8°C21 March 2026 | −26.0°C3 March 2019 | 28 / 28 |
| April | 12.4°C | −0.3°C | 28.9°C28 April 2018 | −16.6°C2 April 2020 | 28 / 28 |
| May | 17.5°C | 4.8°C | 33.9°C13 May 2026 | −8.3°C2 May 2005 | 28 / 28 |
| June | 23.9°C | 9.7°C | 40.0°C15 June 2021 | −0.5°C8 June 2009 | 27 / 28 |
| July | 30.2°C | 14.6°C | 40.6°C12 July 2026 | 5.0°C12 July 2008 | 27 / 28 |
| August | 28.8°C | 13.5°C | 39.4°C3 August 2001 | 2.2°C17 August 2002 | 29 / 29 |
| September | 23.3°C | 8.7°C | 37.8°C4 September 2022 | −7.1°C12 September 2014 | 26 / 29 |
| October | 14.6°C | 1.8°C | 31.7°C1 October 2011 | −19.3°C29 October 2019 | 28 / 28 |
| November | 8.5°C | −3.8°C | 26.7°C7 November 1999 | −24.9°C24 November 2010 | 28 / 28 |
| December | 3.7°C | −7.9°C | 25.6°C1 December 2021 | −31.1°C21 December 1998 | 26 / 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 26 to 29 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.