Hannover Weather Records (GME00102244)
Record envelope, standing records and threshold days for Hannover (GME00102244), Germany, with 92 years of record.
Key Facts for Hannover
- Hannover (GME00102244) is a weather station in Germany at 52.47 latitude and 9.68 longitude, 55 m (180 ft) above sea level.
- The station reports from 1935 to 2026, 92 years of record.
- 1,464 records set at Hannover still stand.
- Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
- Hannover set a daily record high maximum temperature of 35.2 C (95.4 F) on 14 August 2026.
About the Station
- Location: Germany, 52.47 latitude, 9.68 longitude.
- Elevation: 55 m (180 ft).
- Period of record: 1935 to 2026, 92 years.
- Eligible elements: tmax, tmin, prcp, snwd.
Daily Record Envelope and 2026
13 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.0 C (62.6 F) | -25.0 C (-13.0 F) | 12.1 C (53.8 F) | -12.4 C (9.7 F) |
| Feb | 19.1 C (66.4 F) | -24.3 C (-11.7 F) | 18.6 C (65.5 F) | -7.7 C (18.1 F) |
| Mar | 24.4 C (75.9 F) | -18.3 C (-0.9 F) | 19.0 C (66.2 F) | -1.5 C (29.3 F) |
| Apr | 29.7 C (85.5 F) | -7.4 C (18.7 F) | 20.9 C (69.6 F) | -1.2 C (29.8 F) |
| May | 32.2 C (90.0 F) | -5.0 C (23.0 F) | 29.3 C (84.7 F) | 1.9 C (35.4 F) |
| Jun | 37.7 C (99.9 F) | 0.3 C (32.5 F) | 37.7 C (99.9 F) | 6.6 C (43.9 F) |
| Jul | 39.2 C (102.6 F) | 3.3 C (37.9 F) | 36.5 C (97.7 F) | 9.0 C (48.2 F) |
| Aug | 38.0 C (100.4 F) | 3.3 C (37.9 F) | 35.2 C (95.4 F) | 7.3 C (45.1 F) |
| Sep | 33.0 C (91.4 F) | -1.3 C (29.7 F) | n/a | n/a |
| Oct | 27.4 C (81.3 F) | -7.9 C (17.8 F) | n/a | n/a |
| Nov | 20.7 C (69.3 F) | -17.1 C (1.2 F) | n/a | n/a |
| Dec | 17.0 C (62.6 F) | -20.9 C (-5.6 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1935 | 15 |
| 1936 | 10 |
| 1937 | 8 |
| 1938 | 20 |
| 1939 | 22 |
| 1940 | 35 |
| 1941 | 14 |
| 1942 | 26 |
| 1943 | 16 |
| 1944 | 18 |
| 1946 | 17 |
| 1947 | 28 |
| 1948 | 6 |
| 1949 | 19 |
| 1950 | 11 |
| 1951 | 11 |
| 1952 | 20 |
| 1953 | 13 |
| 1954 | 7 |
| 1955 | 11 |
| 1956 | 42 |
| 1957 | 22 |
| 1958 | 13 |
| 1959 | 12 |
| 1960 | 9 |
| 1961 | 15 |
| 1962 | 25 |
| 1963 | 19 |
| 1964 | 19 |
| 1965 | 19 |
| 1966 | 12 |
| 1967 | 6 |
| 1968 | 19 |
| 1969 | 16 |
| 1970 | 5 |
| 1971 | 20 |
| 1972 | 13 |
| 1973 | 15 |
| 1974 | 15 |
| 1975 | 12 |
| 1976 | 16 |
| 1977 | 12 |
| 1978 | 15 |
| 1979 | 11 |
| 1980 | 22 |
| 1981 | 9 |
| 1982 | 6 |
| 1983 | 13 |
| 1984 | 7 |
| 1985 | 14 |
| 1986 | 21 |
| 1987 | 27 |
| 1988 | 8 |
| 1989 | 17 |
| 1990 | 19 |
| 1991 | 9 |
| 1992 | 9 |
| 1993 | 24 |
| 1994 | 13 |
| 1995 | 12 |
| 1996 | 22 |
| 1997 | 17 |
| 1998 | 21 |
| 1999 | 12 |
| 2000 | 14 |
| 2001 | 10 |
| 2002 | 17 |
| 2003 | 15 |
| 2004 | 11 |
| 2005 | 16 |
| 2006 | 24 |
| 2007 | 12 |
| 2008 | 6 |
| 2009 | 9 |
| 2010 | 22 |
| 2011 | 11 |
| 2012 | 17 |
| 2013 | 22 |
| 2014 | 14 |
| 2015 | 34 |
| 2016 | 15 |
| 2017 | 12 |
| 2018 | 31 |
| 2019 | 14 |
| 2020 | 19 |
| 2021 | 19 |
| 2022 | 22 |
| 2023 | 15 |
| 2024 | 19 |
| 2025 | 14 |
| 2026 | 19 |
All-Time Record Progression
12 new records| Date | Kind | Detail |
|---|---|---|
| 1969-02-17 | Record snow depth | Record snow depth 27.0 cm (10.6 in) |
| 1969-02-18 | Record snow depth | Record snow depth 29.0 cm (11.4 in) |
| 1979-02-14 | Record snow depth | Record snow depth 32.0 cm (12.6 in) |
| 1979-02-15 | Record snow depth | Record snow depth 46.0 cm (18.1 in) |
| 1979-02-16 | Record snow depth | Record snow depth 48.0 cm (18.9 in) |
| 1979-02-18 | Record snow depth | Record snow depth 51.0 cm (20.1 in) |
| 2002-07-17 | Record daily precipitation | Record daily precipitation 76.1 mm (3.0 in) |
| 2007-07-16 | Record high minimum temperature | Record high minimum temperature 22.5 C (72.5 F) |
| 2010-07-11 | Record high minimum temperature | Record high minimum temperature 22.7 C (72.9 F) |
| 2010-08-26 | Record daily precipitation | Record daily precipitation 78.8 mm (3.1 in) |
| 2022-07-20 | Record high maximum temperature | Record high maximum temperature 39.2 C (102.6 F) |
| 2026-06-27 | Record high minimum temperature | Record high minimum temperature 22.8 C (73.0 F) |
Wettest Day of Each Month
Aug: 78.8 mm (3.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 27.9 mm (1.1 in) | 13 January 1948 |
| Feb | 36.6 mm (1.4 in) | 8 February 1946 |
| Mar | 27.3 mm (1.1 in) | 20 March 1952 |
| Apr | 26.8 mm (1.1 in) | 13 April 1994 |
| May | 48.7 mm (1.9 in) | 28 May 1984 |
| Jun | 53.7 mm (2.1 in) | 8 June 1937 |
| Jul | 76.1 mm (3.0 in) | 17 July 2002 |
| Aug | 78.8 mm (3.1 in) | 26 August 2010 |
| Sep | 55.0 mm (2.2 in) | 20 September 1936 |
| Oct | 41.6 mm (1.6 in) | 15 October 2019 |
| Nov | 35.2 mm (1.4 in) | 12 November 1947 |
| Dec | 33.1 mm (1.3 in) | 29 December 1986 |
Period of Record Coverage
1935 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1935 | 326 | 89% | No |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 304 | 83% | No |
| 1942 | 315 | 86% | No |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 243 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 August 2026 | Hannover, DE | daily high max | 35.2 C (95.4 F) | 0.2 C (0.4 F) | 0 years | 9 of 100 (Routine) |
| 5 August 2026 | Hannover, DE | daily high min | 19.5 C (67.1 F) | 0.2 C (0.4 F) | 32 years | 18 of 100 (Routine) |
| 30 July 2026 | Hannover, DE | daily high max | 36.5 C (97.7 F) | 3.2 C (5.8 F) | 8 years | 18 of 100 (Routine) |
| 29 July 2026 | Hannover, DE | daily high max (Tie) | 32.9 C (91.2 F) | tie | 17 years | 3 of 100 (Routine) |
| 13 July 2026 | Hannover, DE | daily rain | 24.2 mm (1.0 in) | 8.3 mm (0.33 in) | 68 years | 20 of 100 (Routine) |
| 28 June 2026 | Hannover, DE | daily high max | 32.5 C (90.5 F) | 1.0 C (1.8 F) | 79 years | 34 of 100 (Routine) |
| 28 June 2026 | Hannover, DE | daily high min | 22.0 C (71.6 F) | 4.6 C (8.3 F) | 4 years | 24 of 100 (Routine) |
| 27 June 2026 | Hannover, DE | all-time high min | 22.8 C (73.0 F) | 0.1 C (0.2 F) | 15 years | 33 of 100 (Routine) |
| 27 June 2026 | Hannover, DE | monthly high max | 37.7 C (99.9 F) | 2.0 C (3.6 F) | 6 years | 25 of 100 (Routine) |
| 26 June 2026 | Hannover, DE | daily high min | 17.6 C (63.7 F) | 0.7 C (1.3 F) | 32 years | 20 of 100 (Routine) |
| 26 June 2026 | Hannover, DE | daily high max | 33.9 C (93.0 F) | 1.1 C (2.0 F) | 7 years | 13 of 100 (Routine) |
| 25 June 2026 | Hannover, DE | daily high min | 18.8 C (65.8 F) | 2.4 C (4.3 F) | 7 years | 18 of 100 (Routine) |
| 24 June 2026 | Hannover, DE | daily high max | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 84 years | 35 of 100 (Notable) |
| 19 June 2026 | Hannover, DE | daily high max | 33.0 C (91.4 F) | 0.2 C (0.4 F) | 25 years | 16 of 100 (Routine) |
| 26 May 2026 | Hannover, DE | daily high max | 29.3 C (84.7 F) | 0.3 C (0.5 F) | 72 years | 30 of 100 (Routine) |
| 6 May 2026 | Hannover, DE | daily rain | 30.7 mm (1.2 in) | 12.1 mm (0.5 in) | 21 years | 38 of 100 (Notable) |
| 4 May 2026 | Hannover, DE | daily high min | 13.2 C (55.8 F) | 0.5 C (0.9 F) | 11 years | 13 of 100 (Routine) |
| 6 March 2026 | Hannover, DE | daily high max | 19.0 C (66.2 F) | 0.7 C (1.3 F) | 36 years | 21 of 100 (Routine) |
| 5 March 2026 | Hannover, DE | daily high max | 16.9 C (62.4 F) | 0.5 C (0.9 F) | 0 years | 10 of 100 (Routine) |
| 27 February 2026 | Hannover, DE | daily high max | 18.6 C (65.5 F) | 0.4 C (0.7 F) | 7 years | 11 of 100 (Routine) |
Climate Trend
88 complete years, 1935 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1935 | 9.2 C | -0.16 C |
| 1936 | 9.1 C | -0.20 C |
| 1937 | 9.1 C | -0.22 C |
| 1938 | 9.6 C | +0.29 C |
| 1939 | 9.3 C | -0.04 C |
| 1940 | 7.1 C | -2.25 C |
| 1943 | 9.6 C | +0.27 C |
| 1944 | 9.4 C | +0.03 C |
| 1946 | 8.8 C | -0.58 C |
| 1947 | 8.2 C | -1.10 C |
| 1948 | 9.6 C | +0.21 C |
| 1949 | 9.6 C | +0.25 C |
| 1950 | 9.0 C | -0.30 C |
| 1951 | 9.1 C | -0.20 C |
| 1952 | 8.3 C | -1.07 C |
| 1953 | 9.6 C | +0.24 C |
| 1954 | 8.2 C | -1.10 C |
| 1955 | 8.0 C | -1.36 C |
| 1956 | 7.2 C | -2.16 C |
| 1957 | 9.0 C | -0.34 C |
| 1958 | 8.7 C | -0.63 C |
| 1959 | 9.4 C | +0.09 C |
| 1960 | 8.9 C | -0.49 C |
| 1961 | 9.4 C | +0.01 C |
| 1962 | 7.5 C | -1.88 C |
| 1963 | 7.2 C | -2.12 C |
| 1964 | 8.4 C | -0.98 C |
| 1965 | 7.9 C | -1.41 C |
| 1966 | 8.9 C | -0.44 C |
| 1967 | 9.6 C | +0.26 C |
| 1968 | 8.8 C | -0.55 C |
| 1969 | 8.3 C | -1.00 C |
| 1970 | 8.2 C | -1.11 C |
| 1971 | 9.1 C | -0.27 C |
| 1972 | 8.4 C | -0.96 C |
| 1973 | 8.9 C | -0.45 C |
| 1974 | 9.5 C | +0.18 C |
| 1975 | 9.8 C | +0.43 C |
| 1976 | 8.8 C | -0.55 C |
| 1977 | 9.4 C | +0.08 C |
| 1978 | 8.6 C | -0.77 C |
| 1979 | 8.2 C | -1.19 C |
| 1980 | 8.4 C | -0.99 C |
| 1981 | 8.8 C | -0.57 C |
| 1982 | 9.7 C | +0.34 C |
| 1983 | 9.8 C | +0.41 C |
| 1984 | 8.8 C | -0.52 C |
| 1985 | 8.2 C | -1.19 C |
| 1986 | 8.5 C | -0.87 C |
| 1987 | 7.9 C | -1.48 C |
| 1988 | 9.8 C | +0.50 C |
| 1989 | 10.4 C | +1.04 C |
| 1990 | 10.5 C | +1.13 C |
| 1991 | 9.1 C | -0.26 C |
| 1992 | 10.1 C | +0.79 C |
| 1993 | 8.9 C | -0.47 C |
| 1994 | 10.1 C | +0.73 C |
| 1995 | 9.6 C | +0.22 C |
| 1996 | 7.6 C | -1.78 C |
| 1997 | 9.5 C | +0.20 C |
| 1998 | 9.8 C | +0.50 C |
| 1999 | 10.5 C | +1.18 C |
| 2000 | 10.8 C | +1.41 C |
| 2001 | 9.6 C | +0.21 C |
| 2002 | 10.1 C | +0.73 C |
| 2003 | 9.8 C | +0.42 C |
| 2004 | 9.8 C | +0.44 C |
| 2005 | 9.8 C | +0.45 C |
| 2006 | 10.4 C | +1.05 C |
| 2007 | 10.5 C | +1.15 C |
| 2008 | 10.2 C | +0.85 C |
| 2009 | 9.9 C | +0.60 C |
| 2010 | 8.3 C | -1.04 C |
| 2011 | 10.4 C | +1.01 C |
| 2012 | 9.8 C | +0.45 C |
| 2013 | 9.3 C | -0.08 C |
| 2014 | 11.1 C | +1.73 C |
| 2015 | 10.5 C | +1.13 C |
| 2016 | 10.2 C | +0.89 C |
| 2017 | 10.3 C | +0.96 C |
| 2018 | 10.9 C | +1.59 C |
| 2019 | 10.9 C | +1.58 C |
| 2020 | 11.1 C | +1.79 C |
| 2021 | 9.9 C | +0.55 C |
| 2022 | 10.9 C | +1.57 C |
| 2023 | 11.2 C | +1.83 C |
| 2024 | 11.5 C | +2.17 C |
| 2025 | 10.6 C | +1.26 C |
The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1935 to 2025. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 88 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1935 to 2025 | 88 | Rise |
| Mean daily maximum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.6) per decade | 1935 to 2025 | 88 | Rise |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1935 to 2025 | 88 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1935 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 39.2 C (102.6 F) | 2022 | 32.9 C (91.2 F) | 91 |
| Coldest night (TNn) | -25.0 C (-13.0 F) | 1942 | -14.2 C (6.4 F) | 91 |
| Wettest day (Rx1day) | 78.8 mm (3.1 in) | 2010 | 30.7 mm (1.2 in) | 91 |
| Wettest five days (Rx5day) | 115.9 mm (4.6 in) | 2002 | 50.4 mm (2.0 in) | 91 |
| Longest dry spell (CDD) | 63 days | 1959 | 20 days | 91 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1935 | 32.2 C (90.0 F) |
| 1936 | 31.0 C (87.8 F) |
| 1937 | 33.7 C (92.7 F) |
| 1938 | 32.1 C (89.8 F) |
| 1939 | 32.0 C (89.6 F) |
| 1940 | 29.3 C (84.7 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 33.9 C (93.0 F) |
| 1943 | 38.0 C (100.4 F) |
| 1944 | 36.5 C (97.7 F) |
| 1946 | 32.2 C (90.0 F) |
| 1947 | 33.0 C (91.4 F) |
| 1948 | 32.1 C (89.8 F) |
| 1949 | 31.4 C (88.5 F) |
| 1950 | 29.6 C (85.3 F) |
| 1951 | 32.0 C (89.6 F) |
| 1952 | 34.3 C (93.7 F) |
| 1953 | 32.9 C (91.2 F) |
| 1954 | 32.1 C (89.8 F) |
| 1955 | 28.8 C (83.8 F) |
| 1956 | 28.7 C (83.7 F) |
| 1957 | 33.8 C (92.8 F) |
| 1958 | 27.4 C (81.3 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 30.4 C (86.7 F) |
| 1961 | 32.4 C (90.3 F) |
| 1962 | 26.6 C (79.9 F) |
| 1963 | 34.9 C (94.8 F) |
| 1964 | 33.2 C (91.8 F) |
| 1965 | 26.5 C (79.7 F) |
| 1966 | 32.3 C (90.1 F) |
| 1967 | 30.5 C (86.9 F) |
| 1968 | 29.9 C (85.8 F) |
| 1969 | 33.0 C (91.4 F) |
| 1970 | 30.6 C (87.1 F) |
| 1971 | 34.0 C (93.2 F) |
| 1972 | 31.6 C (88.9 F) |
| 1973 | 32.5 C (90.5 F) |
| 1974 | 33.7 C (92.7 F) |
| 1975 | 33.6 C (92.5 F) |
| 1976 | 33.6 C (92.5 F) |
| 1977 | 29.3 C (84.7 F) |
| 1978 | 30.3 C (86.5 F) |
| 1979 | 30.3 C (86.5 F) |
| 1980 | 30.2 C (86.4 F) |
| 1981 | 30.6 C (87.1 F) |
| 1982 | 31.6 C (88.9 F) |
| 1983 | 32.1 C (89.8 F) |
| 1984 | 31.9 C (89.4 F) |
| 1985 | 32.2 C (90.0 F) |
| 1986 | 33.6 C (92.5 F) |
| 1987 | 31.9 C (89.4 F) |
| 1988 | 29.8 C (85.6 F) |
| 1989 | 33.6 C (92.5 F) |
| 1990 | 35.4 C (95.7 F) |
| 1991 | 31.2 C (88.2 F) |
| 1992 | 37.4 C (99.3 F) |
| 1993 | 27.9 C (82.2 F) |
| 1994 | 34.7 C (94.5 F) |
| 1995 | 32.7 C (90.9 F) |
| 1996 | 31.4 C (88.5 F) |
| 1997 | 31.8 C (89.2 F) |
| 1998 | 32.8 C (91.0 F) |
| 1999 | 32.6 C (90.7 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 34.0 C (93.2 F) |
| 2002 | 33.1 C (91.6 F) |
| 2003 | 36.5 C (97.7 F) |
| 2004 | 30.8 C (87.4 F) |
| 2005 | 31.8 C (89.2 F) |
| 2006 | 35.8 C (96.4 F) |
| 2007 | 33.8 C (92.8 F) |
| 2008 | 32.9 C (91.2 F) |
| 2009 | 35.5 C (95.9 F) |
| 2010 | 35.7 C (96.3 F) |
| 2011 | 31.7 C (89.1 F) |
| 2012 | 34.8 C (94.6 F) |
| 2013 | 34.8 C (94.6 F) |
| 2014 | 32.9 C (91.2 F) |
| 2015 | 36.4 C (97.5 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 33.1 C (91.6 F) |
| 2018 | 36.5 C (97.7 F) |
| 2019 | 37.9 C (100.2 F) |
| 2020 | 35.7 C (96.3 F) |
| 2021 | 33.7 C (92.7 F) |
| 2022 | 39.2 C (102.6 F) |
| 2023 | 33.4 C (92.1 F) |
| 2024 | 32.9 C (91.2 F) |
| 2025 | 37.5 C (99.5 F) |
| 2026 | 37.7 C (99.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1935 | -15.0 C (5.0 F) |
| 1936 | -13.4 C (7.9 F) |
| 1937 | -12.5 C (9.5 F) |
| 1938 | -18.9 C (-2.0 F) |
| 1939 | -14.3 C (6.3 F) |
| 1940 | -24.8 C (-12.6 F) |
| 1941 | -18.9 C (-2.0 F) |
| 1942 | -25.0 C (-13.0 F) |
| 1943 | -14.3 C (6.3 F) |
| 1944 | -12.2 C (10.0 F) |
| 1946 | -18.1 C (-0.6 F) |
| 1947 | -17.2 C (1.0 F) |
| 1948 | -11.4 C (11.5 F) |
| 1949 | -16.8 C (1.8 F) |
| 1950 | -14.1 C (6.6 F) |
| 1951 | -6.3 C (20.7 F) |
| 1952 | -13.5 C (7.7 F) |
| 1953 | -21.2 C (-6.2 F) |
| 1954 | -17.5 C (0.5 F) |
| 1955 | -15.7 C (3.7 F) |
| 1956 | -24.3 C (-11.7 F) |
| 1957 | -20.9 C (-5.6 F) |
| 1958 | -14.8 C (5.4 F) |
| 1959 | -16.5 C (2.3 F) |
| 1960 | -15.2 C (4.6 F) |
| 1961 | -15.9 C (3.4 F) |
| 1962 | -20.6 C (-5.1 F) |
| 1963 | -22.0 C (-7.6 F) |
| 1964 | -14.0 C (6.8 F) |
| 1965 | -17.1 C (1.2 F) |
| 1966 | -13.4 C (7.9 F) |
| 1967 | -10.4 C (13.3 F) |
| 1968 | -19.6 C (-3.3 F) |
| 1969 | -19.0 C (-2.2 F) |
| 1970 | -15.9 C (3.4 F) |
| 1971 | -20.3 C (-4.5 F) |
| 1972 | -15.8 C (3.6 F) |
| 1973 | -16.1 C (3.0 F) |
| 1974 | -4.7 C (23.5 F) |
| 1975 | -9.8 C (14.4 F) |
| 1976 | -15.6 C (3.9 F) |
| 1977 | -7.8 C (18.0 F) |
| 1978 | -18.4 C (-1.1 F) |
| 1979 | -19.7 C (-3.5 F) |
| 1980 | -13.3 C (8.1 F) |
| 1981 | -18.7 C (-1.7 F) |
| 1982 | -16.1 C (3.0 F) |
| 1983 | -13.3 C (8.1 F) |
| 1984 | -8.6 C (16.5 F) |
| 1985 | -18.4 C (-1.1 F) |
| 1986 | -22.3 C (-8.1 F) |
| 1987 | -22.4 C (-8.3 F) |
| 1988 | -8.7 C (16.3 F) |
| 1989 | -9.0 C (15.8 F) |
| 1990 | -5.8 C (21.6 F) |
| 1991 | -13.8 C (7.2 F) |
| 1992 | -9.2 C (15.4 F) |
| 1993 | -13.3 C (8.1 F) |
| 1994 | -14.2 C (6.4 F) |
| 1995 | -13.8 C (7.2 F) |
| 1996 | -17.7 C (0.1 F) |
| 1997 | -20.9 C (-5.6 F) |
| 1998 | -11.4 C (11.5 F) |
| 1999 | -9.6 C (14.7 F) |
| 2000 | -9.6 C (14.7 F) |
| 2001 | -15.1 C (4.8 F) |
| 2002 | -11.1 C (12.0 F) |
| 2003 | -15.4 C (4.3 F) |
| 2004 | -7.3 C (18.9 F) |
| 2005 | -11.3 C (11.7 F) |
| 2006 | -14.4 C (6.1 F) |
| 2007 | -9.7 C (14.5 F) |
| 2008 | -10.1 C (13.8 F) |
| 2009 | -19.9 C (-3.8 F) |
| 2010 | -14.9 C (5.2 F) |
| 2011 | -9.8 C (14.4 F) |
| 2012 | -18.2 C (-0.8 F) |
| 2013 | -12.1 C (10.2 F) |
| 2014 | -10.5 C (13.1 F) |
| 2015 | -7.3 C (18.9 F) |
| 2016 | -12.3 C (9.9 F) |
| 2017 | -11.0 C (12.2 F) |
| 2018 | -12.1 C (10.2 F) |
| 2019 | -9.3 C (15.3 F) |
| 2020 | -6.2 C (20.8 F) |
| 2021 | -17.8 C (0.0 F) |
| 2022 | -11.3 C (11.7 F) |
| 2023 | -6.5 C (20.3 F) |
| 2024 | -10.4 C (13.3 F) |
| 2025 | -9.8 C (14.4 F) |
| 2026 | -12.4 C (9.7 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1935 | 27.9 mm (1.1 in) |
| 1936 | 55.0 mm (2.2 in) |
| 1937 | 53.7 mm (2.1 in) |
| 1938 | 36.9 mm (1.5 in) |
| 1939 | 68.9 mm (2.7 in) |
| 1940 | 31.0 mm (1.2 in) |
| 1941 | 25.9 mm (1.0 in) |
| 1942 | 29.0 mm (1.1 in) |
| 1943 | 21.0 mm (0.8 in) |
| 1944 | 34.0 mm (1.3 in) |
| 1946 | 36.6 mm (1.4 in) |
| 1947 | 38.1 mm (1.5 in) |
| 1948 | 29.8 mm (1.2 in) |
| 1949 | 33.6 mm (1.3 in) |
| 1950 | 45.0 mm (1.8 in) |
| 1951 | 29.0 mm (1.1 in) |
| 1952 | 34.1 mm (1.3 in) |
| 1953 | 35.7 mm (1.4 in) |
| 1954 | 64.0 mm (2.5 in) |
| 1955 | 25.8 mm (1.0 in) |
| 1956 | 58.7 mm (2.3 in) |
| 1957 | 31.9 mm (1.3 in) |
| 1958 | 38.0 mm (1.5 in) |
| 1959 | 15.4 mm (0.6 in) |
| 1960 | 40.9 mm (1.6 in) |
| 1961 | 22.4 mm (0.9 in) |
| 1962 | 28.2 mm (1.1 in) |
| 1963 | 23.9 mm (0.9 in) |
| 1964 | 22.9 mm (0.9 in) |
| 1965 | 27.1 mm (1.1 in) |
| 1966 | 29.1 mm (1.1 in) |
| 1967 | 37.4 mm (1.5 in) |
| 1968 | 23.0 mm (0.9 in) |
| 1969 | 52.5 mm (2.1 in) |
| 1970 | 31.6 mm (1.2 in) |
| 1971 | 25.2 mm (1.0 in) |
| 1972 | 40.5 mm (1.6 in) |
| 1973 | 21.5 mm (0.8 in) |
| 1974 | 30.7 mm (1.2 in) |
| 1975 | 21.7 mm (0.9 in) |
| 1976 | 28.5 mm (1.1 in) |
| 1977 | 21.5 mm (0.8 in) |
| 1978 | 28.1 mm (1.1 in) |
| 1979 | 25.9 mm (1.0 in) |
| 1980 | 40.3 mm (1.6 in) |
| 1981 | 47.0 mm (1.9 in) |
| 1982 | 26.7 mm (1.1 in) |
| 1983 | 26.0 mm (1.0 in) |
| 1984 | 48.7 mm (1.9 in) |
| 1985 | 25.9 mm (1.0 in) |
| 1986 | 33.1 mm (1.3 in) |
| 1987 | 43.0 mm (1.7 in) |
| 1988 | 16.0 mm (0.6 in) |
| 1989 | 33.4 mm (1.3 in) |
| 1990 | 30.7 mm (1.2 in) |
| 1991 | 22.2 mm (0.9 in) |
| 1992 | 26.1 mm (1.0 in) |
| 1993 | 35.0 mm (1.4 in) |
| 1994 | 26.8 mm (1.1 in) |
| 1995 | 16.3 mm (0.6 in) |
| 1996 | 35.6 mm (1.4 in) |
| 1997 | 24.7 mm (1.0 in) |
| 1998 | 30.4 mm (1.2 in) |
| 1999 | 24.6 mm (1.0 in) |
| 2000 | 21.7 mm (0.9 in) |
| 2001 | 20.6 mm (0.8 in) |
| 2002 | 76.1 mm (3.0 in) |
| 2003 | 42.6 mm (1.7 in) |
| 2004 | 29.4 mm (1.2 in) |
| 2005 | 26.6 mm (1.0 in) |
| 2006 | 36.0 mm (1.4 in) |
| 2007 | 36.5 mm (1.4 in) |
| 2008 | 28.2 mm (1.1 in) |
| 2009 | 37.9 mm (1.5 in) |
| 2010 | 78.8 mm (3.1 in) |
| 2011 | 38.0 mm (1.5 in) |
| 2012 | 27.7 mm (1.1 in) |
| 2013 | 39.1 mm (1.5 in) |
| 2014 | 37.6 mm (1.5 in) |
| 2015 | 38.5 mm (1.5 in) |
| 2016 | 29.3 mm (1.2 in) |
| 2017 | 46.9 mm (1.8 in) |
| 2018 | 37.4 mm (1.5 in) |
| 2019 | 41.6 mm (1.6 in) |
| 2020 | 27.3 mm (1.1 in) |
| 2021 | 20.9 mm (0.8 in) |
| 2022 | 18.9 mm (0.7 in) |
| 2023 | 47.1 mm (1.9 in) |
| 2024 | 49.9 mm (2.0 in) |
| 2025 | 21.0 mm (0.8 in) |
| 2026 | 30.7 mm (1.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1935 | 24.9 mm (1.0 in) |
| 1936 | 63.5 mm (2.5 in) |
| 1937 | 55.0 mm (2.2 in) |
| 1938 | 50.0 mm (2.0 in) |
| 1939 | 97.8 mm (3.9 in) |
| 1940 | 48.4 mm (1.9 in) |
| 1941 | 49.0 mm (1.9 in) |
| 1942 | 28.9 mm (1.1 in) |
| 1943 | 38.6 mm (1.5 in) |
| 1944 | 57.2 mm (2.3 in) |
| 1946 | 71.1 mm (2.8 in) |
| 1947 | 87.8 mm (3.5 in) |
| 1948 | 56.9 mm (2.2 in) |
| 1949 | 49.8 mm (2.0 in) |
| 1950 | 50.7 mm (2.0 in) |
| 1951 | 56.4 mm (2.2 in) |
| 1952 | 47.8 mm (1.9 in) |
| 1953 | 45.5 mm (1.8 in) |
| 1954 | 86.5 mm (3.4 in) |
| 1955 | 54.4 mm (2.1 in) |
| 1956 | 71.7 mm (2.8 in) |
| 1957 | 59.4 mm (2.3 in) |
| 1958 | 65.9 mm (2.6 in) |
| 1959 | 26.5 mm (1.0 in) |
| 1960 | 81.0 mm (3.2 in) |
| 1961 | 44.2 mm (1.7 in) |
| 1962 | 45.6 mm (1.8 in) |
| 1963 | 49.2 mm (1.9 in) |
| 1964 | 46.1 mm (1.8 in) |
| 1965 | 40.6 mm (1.6 in) |
| 1966 | 55.2 mm (2.2 in) |
| 1967 | 62.0 mm (2.4 in) |
| 1968 | 38.8 mm (1.5 in) |
| 1969 | 62.7 mm (2.5 in) |
| 1970 | 58.8 mm (2.3 in) |
| 1971 | 56.4 mm (2.2 in) |
| 1972 | 53.2 mm (2.1 in) |
| 1973 | 40.7 mm (1.6 in) |
| 1974 | 46.9 mm (1.8 in) |
| 1975 | 45.7 mm (1.8 in) |
| 1976 | 49.4 mm (1.9 in) |
| 1977 | 30.9 mm (1.2 in) |
| 1978 | 44.8 mm (1.8 in) |
| 1979 | 40.7 mm (1.6 in) |
| 1980 | 48.6 mm (1.9 in) |
| 1981 | 87.4 mm (3.4 in) |
| 1982 | 42.2 mm (1.7 in) |
| 1983 | 42.1 mm (1.7 in) |
| 1984 | 89.7 mm (3.5 in) |
| 1985 | 42.0 mm (1.7 in) |
| 1986 | 88.7 mm (3.5 in) |
| 1987 | 100.6 mm (4.0 in) |
| 1988 | 43.8 mm (1.7 in) |
| 1989 | 66.2 mm (2.6 in) |
| 1990 | 68.0 mm (2.7 in) |
| 1991 | 41.8 mm (1.6 in) |
| 1992 | 48.9 mm (1.9 in) |
| 1993 | 57.6 mm (2.3 in) |
| 1994 | 49.1 mm (1.9 in) |
| 1995 | 43.1 mm (1.7 in) |
| 1996 | 46.6 mm (1.8 in) |
| 1997 | 61.5 mm (2.4 in) |
| 1998 | 64.6 mm (2.5 in) |
| 1999 | 39.8 mm (1.6 in) |
| 2000 | 33.9 mm (1.3 in) |
| 2001 | 43.9 mm (1.7 in) |
| 2002 | 115.9 mm (4.6 in) |
| 2003 | 53.8 mm (2.1 in) |
| 2004 | 47.0 mm (1.9 in) |
| 2005 | 36.3 mm (1.4 in) |
| 2006 | 49.8 mm (2.0 in) |
| 2007 | 65.1 mm (2.6 in) |
| 2008 | 68.3 mm (2.7 in) |
| 2009 | 53.5 mm (2.1 in) |
| 2010 | 108.8 mm (4.3 in) |
| 2011 | 60.1 mm (2.4 in) |
| 2012 | 52.8 mm (2.1 in) |
| 2013 | 66.3 mm (2.6 in) |
| 2014 | 49.3 mm (1.9 in) |
| 2015 | 58.3 mm (2.3 in) |
| 2016 | 70.1 mm (2.8 in) |
| 2017 | 71.3 mm (2.8 in) |
| 2018 | 46.0 mm (1.8 in) |
| 2019 | 57.1 mm (2.2 in) |
| 2020 | 43.7 mm (1.7 in) |
| 2021 | 47.0 mm (1.9 in) |
| 2022 | 44.0 mm (1.7 in) |
| 2023 | 90.2 mm (3.6 in) |
| 2024 | 85.0 mm (3.3 in) |
| 2025 | 40.7 mm (1.6 in) |
| 2026 | 50.4 mm (2.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1935 | 1 day |
| 1936 | 18 days |
| 1937 | 22 days |
| 1938 | 18 days |
| 1939 | 19 days |
| 1940 | 14 days |
| 1941 | 1 day |
| 1942 | 2 days |
| 1943 | 37 days |
| 1944 | 17 days |
| 1946 | 23 days |
| 1947 | 17 days |
| 1948 | 21 days |
| 1949 | 25 days |
| 1950 | 17 days |
| 1951 | 36 days |
| 1952 | 11 days |
| 1953 | 23 days |
| 1954 | 19 days |
| 1955 | 18 days |
| 1956 | 20 days |
| 1957 | 18 days |
| 1958 | 22 days |
| 1959 | 63 days |
| 1960 | 21 days |
| 1961 | 16 days |
| 1962 | 24 days |
| 1963 | 29 days |
| 1964 | 19 days |
| 1965 | 20 days |
| 1966 | 19 days |
| 1967 | 12 days |
| 1968 | 27 days |
| 1969 | 22 days |
| 1970 | 13 days |
| 1971 | 20 days |
| 1972 | 30 days |
| 1973 | 21 days |
| 1974 | 21 days |
| 1975 | 21 days |
| 1976 | 22 days |
| 1977 | 17 days |
| 1978 | 22 days |
| 1979 | 12 days |
| 1980 | 21 days |
| 1981 | 15 days |
| 1982 | 20 days |
| 1983 | 28 days |
| 1984 | 21 days |
| 1985 | 18 days |
| 1986 | 21 days |
| 1987 | 14 days |
| 1988 | 21 days |
| 1989 | 24 days |
| 1990 | 23 days |
| 1991 | 24 days |
| 1992 | 23 days |
| 1993 | 22 days |
| 1994 | 24 days |
| 1995 | 34 days |
| 1996 | 25 days |
| 1997 | 21 days |
| 1998 | 27 days |
| 1999 | 20 days |
| 2000 | 18 days |
| 2001 | 17 days |
| 2002 | 22 days |
| 2003 | 22 days |
| 2004 | 17 days |
| 2005 | 19 days |
| 2006 | 18 days |
| 2007 | 19 days |
| 2008 | 17 days |
| 2009 | 16 days |
| 2010 | 16 days |
| 2011 | 38 days |
| 2012 | 21 days |
| 2013 | 20 days |
| 2014 | 12 days |
| 2015 | 22 days |
| 2016 | 16 days |
| 2017 | 15 days |
| 2018 | 20 days |
| 2019 | 20 days |
| 2020 | 29 days |
| 2021 | 13 days |
| 2022 | 23 days |
| 2023 | 27 days |
| 2024 | 20 days |
| 2025 | 24 days |
| 2026 | 14 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
88 years with a frostAcross 88 years with a frost, the median last spring frost at Hannover falls on 24 April and the median first autumn frost on 22 October, which leaves a median of 182 days between them.
In 1996 to 2025 the median growing season was 195 days. That is 22 days more than in 1935 to 1967.
Fitted over all years, the growing season changes by +3.3 days per decade at this station.
| Measure | Median, all years | Earliest period (1935 to 1967) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 24 April | 27 April | 22 April | 5 days earlier | -0.7 days per decade |
| First autumn frost | 22 October | 17 October | 30 October | 13 days later | +2.6 days per decade |
| Growing days | 182 days | 173 days | 195 days | 22 days more | +3.3 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
87 years, 1936 to 2025A day with at least 31.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 78.7 mm (3.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 31.4 mm (1.2 in) | |
| 5 years | 42.2 mm (1.7 in) | |
| 10 years | 50.0 mm (2.0 in) | |
| 25 years | 60.8 mm (2.4 in) | |
| 50 years | 69.5 mm (2.7 in) | |
| 100 years | 78.7 mm (3.1 in) | Longer than the 87 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 87 years of values from 1936 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 78.8 mm (3.1 in) in 2010; 76.1 mm (3.0 in) in 2002; 68.9 mm (2.7 in) in 1939.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Hannover, at 1966 and 1998. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1966 ran 0.1 C (0.2 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1998 ran 0.1 C (0.1 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1966 | +0.1 | +0.2 | likely | 5 |
| 1998 | +0.1 | +0.1 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Hannover had a mean temperature of 10.6 C (51.0 F) and 621.7 mm (24.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Bonn-Friesdorf (Germany, 262 km away), Koblenz-Horchheim (Germany, 277 km away) and Orly (France, 662 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Bonn-Friesdorf | Germany | 262 km (163 mi) | 10.4 C (50.7 F) | 677.3 mm (26.7 in) | 0.52 |
| Koblenz-Horchheim | Germany | 277 km (172 mi) | 10.5 C (50.8 F) | 674.9 mm (26.6 in) | 0.60 |
| Orly | France | 662 km (411 mi) | 10.9 C (51.6 F) | 615.4 mm (24.2 in) | 0.63 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).