Oshkosh/Wittman Rgnl climate by month
Averages and records for each calendar month at Oshkosh/Wittman Rgnl, United States, from 1996 to 2026. The warmest month is July, averaging 27.6°C; the coolest is January at −3.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.2°C | −11.2°C | 12.8°C30 January 2025 | −32.1°C31 January 2019 | 30 / 30 |
| February | −1.1°C | −10.2°C | 22.8°C27 February 2024 | −28.2°C21 February 2008 | 30 / 30 |
| March | 5.5°C | −4.1°C | 27.8°C21 March 2012 | −26.0°C3 March 2014 | 30 / 30 |
| April | 12.8°C | 2.1°C | 30.0°C15 April 2002 | −10.5°C7 April 2018 | 30 / 30 |
| May | 19.7°C | 8.2°C | 34.4°C27 May 2018 | −3.9°C3 May 2004 | 30 / 30 |
| June | 25.1°C | 14.1°C | 35.6°C7 June 2011 | 1.7°C1 June 2003 | 30 / 30 |
| July | 27.6°C | 16.3°C | 37.8°C5 July 2012 | 6.7°C2 July 2005 | 31 / 31 |
| August | 26.1°C | 15.4°C | 36.7°C23 August 2023 | 5.6°C21 August 2004 | 31 / 31 |
| September | 22.6°C | 11.0°C | 34.4°C3 September 2023 | −1.0°C19 September 2012 | 30 / 31 |
| October | 15.0°C | 4.8°C | 30.6°C3 October 2005 | −5.5°C31 October 2019 | 30 / 30 |
| November | 7.2°C | −1.6°C | 23.9°C9 November 2020 | −18.9°C27 November 1996 | 30 / 30 |
| December | −0.1°C | −7.7°C | 18.3°C5 December 2001 | −28.9°C25 December 2000 | 30 / 30 |
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 30 to 31 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.