Hannover Arpt climate by month
Averages and records for each calendar month at Hannover Arpt, Germany, from 1935 to 2026. The warmest month is July, averaging 23.0°C; the coolest is January at 3.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.6°C | −1.4°C | 17.0°C1 January 2023 | −25.0°C27 January 1942 | 89 / 91 |
| February | 4.6°C | −1.4°C | 19.1°C24 February 2021 | −24.3°C16 February 1956 | 89 / 91 |
| March | 8.6°C | 0.6°C | 24.4°C28 March 1989 | −18.3°C4 March 1987 | 91 / 91 |
| April | 13.6°C | 3.5°C | 29.7°C21 April 1968 | −7.4°C8 April 2003 | 91 / 91 |
| May | 18.2°C | 7.3°C | 32.2°C30 May 1944 | −5.0°C2 May 1935 | 91 / 91 |
| June | 21.4°C | 10.7°C | 37.7°C27 June 2026 | 0.3°C1 June 1977 | 91 / 91 |
| July | 23.0°C | 12.6°C | 39.2°C20 July 2022 | 3.3°C7 July 1964 | 91 / 91 |
| August | 23.0°C | 12.4°C | 38.0°C21 August 1943 | 3.3°C22 August 1964 | 91 / 91 |
| September | 19.2°C | 9.6°C | 33.0°C16 September 1947 | −1.3°C30 September 1969 | 89 / 90 |
| October | 13.8°C | 6.1°C | 27.4°C13 October 2018 | −7.9°C31 October 1949 | 90 / 90 |
| November | 8.1°C | 2.7°C | 20.7°C2 November 2020 | −17.1°C23 November 1965 | 89 / 90 |
| December | 4.6°C | −0.2°C | 17.0°C31 December 2022 | −20.9°C17 December 1957 | 89 / 90 |
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 89 to 91 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.