Basel/Euro Arpt climate by month
Averages and records for each calendar month at Basel/Euro Arpt, France, from 1973 to 2025. The warmest month is July, averaging 26.2°C; the coolest is January at 5.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.9°C | −2.9°C | 20.0°C25 January 1978 | −23.5°C6 January 1985 | 13 / 50 |
| February | 8.1°C | −0.9°C | 21.7°C24 February 1990 | −21.0°C26 February 1986 | 10 / 49 |
| March | 12.2°C | −0.7°C | 26.2°C31 March 2021 | −16.4°C1 March 2005 | 22 / 49 |
| April | 16.0°C | 3.2°C | 29.4°C21 April 2018 | −6.3°C8 April 2003 | 20 / 49 |
| May | 20.7°C | 8.7°C | 33.0°C20 May 2022 | −2.0°C1 May 1976 | 26 / 49 |
| June | 23.8°C | 12.2°C | 37.0°C9 June 2014 | 2.2°C8 June 2005 | 30 / 49 |
| July | 26.2°C | 13.8°C | 37.7°C31 July 2020 | 5.9°C3 July 2011 | 30 / 49 |
| August | 25.7°C | 14.3°C | 39.1°C13 August 2003 | 3.6°C30 August 1998 | 27 / 49 |
| September | 21.1°C | 9.7°C | 33.2°C11 September 2023 | 0.5°C30 September 2002 | 26 / 49 |
| October | 16.0°C | – | 31.0°C3 October 1985 | −6.3°C30 October 1997 | 22 / 49 |
| November | 9.9°C | – | 23.4°C7 November 2015 | −12.6°C30 November 2010 | 11 / 49 |
| December | 6.7°C | – | 20.0°C7 December 1973 | −18.0°C20 December 1975 | 10 / 48 |
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 10 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.