Aach Weather Records (GME00123346)
Record envelope, standing records and threshold days for Aach (GME00123346), Germany, with 75 years of record.
Key Facts for Aach
- Aach (GME00123346) is a weather station in Germany at 47.84 latitude and 8.85 longitude, 478 m (1,568 ft) above sea level.
- The station reports from 1912 to 1986, 75 years of record.
- 1,464 records set at Aach still stand.
- Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
- Aach set a daily record high minimum temperature of 16.9 C (62.4 F) on 23 June 1986.
About the Station
- Location: Germany, 47.84 latitude, 8.85 longitude.
- Elevation: 478 m (1,568 ft).
- Period of record: 1912 to 1986, 75 years.
- Eligible elements: tmax, tmin, prcp, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 16.6 C (61.9 F) | -26.0 C (-14.8 F) | n/a | n/a |
| Feb | 17.6 C (63.7 F) | -23.0 C (-9.4 F) | n/a | n/a |
| Mar | 23.0 C (73.4 F) | -16.4 C (2.5 F) | n/a | n/a |
| Apr | 28.4 C (83.1 F) | -7.8 C (18.0 F) | n/a | n/a |
| May | 32.0 C (89.6 F) | -5.2 C (22.6 F) | n/a | n/a |
| Jun | 35.8 C (96.4 F) | -1.4 C (29.5 F) | n/a | n/a |
| Jul | 37.2 C (99.0 F) | 2.6 C (36.7 F) | n/a | n/a |
| Aug | 38.2 C (100.8 F) | 2.2 C (36.0 F) | n/a | n/a |
| Sep | 33.0 C (91.4 F) | -2.7 C (27.1 F) | n/a | n/a |
| Oct | 27.2 C (81.0 F) | -6.8 C (19.8 F) | n/a | n/a |
| Nov | 21.8 C (71.2 F) | -14.8 C (5.4 F) | n/a | n/a |
| Dec | 14.8 C (58.6 F) | -21.2 C (-6.2 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1937 | 24 |
| 1938 | 20 |
| 1939 | 37 |
| 1940 | 45 |
| 1941 | 35 |
| 1942 | 34 |
| 1943 | 29 |
| 1944 | 37 |
| 1947 | 63 |
| 1948 | 40 |
| 1949 | 57 |
| 1950 | 29 |
| 1951 | 14 |
| 1952 | 34 |
| 1953 | 23 |
| 1954 | 20 |
| 1955 | 25 |
| 1956 | 50 |
| 1957 | 30 |
| 1958 | 36 |
| 1959 | 15 |
| 1960 | 24 |
| 1961 | 40 |
| 1962 | 55 |
| 1963 | 33 |
| 1964 | 17 |
| 1965 | 26 |
| 1966 | 33 |
| 1967 | 31 |
| 1968 | 29 |
| 1969 | 28 |
| 1970 | 18 |
| 1971 | 29 |
| 1972 | 30 |
| 1973 | 17 |
| 1974 | 40 |
| 1975 | 22 |
| 1976 | 31 |
| 1977 | 21 |
| 1978 | 23 |
| 1979 | 26 |
| 1980 | 29 |
| 1981 | 34 |
| 1982 | 12 |
| 1983 | 35 |
| 1984 | 15 |
| 1985 | 44 |
| 1986 | 25 |
All-Time Record Progression
1 new records| Date | Kind | Detail |
|---|---|---|
| 1985-01-09 | Record low minimum temperature | Record low minimum temperature -26.0 C (-14.8 F) |
Wettest Day of Each Month
Jun: 76.1 mm (3.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 36.7 mm (1.4 in) | 9 January 1982 |
| Feb | 32.8 mm (1.3 in) | 13 February 1957 |
| Mar | 39.1 mm (1.5 in) | 18 March 1937 |
| Apr | 52.2 mm (2.1 in) | 9 April 1986 |
| May | 40.4 mm (1.6 in) | 28 May 1968 |
| Jun | 76.1 mm (3.0 in) | 18 June 1920 |
| Jul | 65.0 mm (2.6 in) | 15 July 1965 |
| Aug | 70.5 mm (2.8 in) | 11 August 1975 |
| Sep | 53.2 mm (2.1 in) | 21 September 1968 |
| Oct | 47.5 mm (1.9 in) | 6 October 1973 |
| Nov | 52.4 mm (2.1 in) | 20 November 1972 |
| Dec | 29.6 mm (1.2 in) | 15 December 1981 |
Period of Record Coverage
1937 to 1986| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 363 | 99% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1947 | 364 | 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 | 181 | 50% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 23 June 1986 | Aach, DE | daily high min | 16.9 C (62.4 F) | 0.7 C (1.3 F) | 32 years | 16 of 100 (Routine) |
| 19 June 1986 | Aach, DE | daily high min | 14.0 C (57.2 F) | 0.2 C (0.4 F) | 31 years | 14 of 100 (Routine) |
| 17 June 1986 | Aach, DE | daily high min | 14.9 C (58.8 F) | 0.5 C (0.9 F) | 16 years | 11 of 100 (Routine) |
| 15 June 1986 | Aach, DE | daily high min | 15.4 C (59.7 F) | 0.2 C (0.4 F) | 24 years | 12 of 100 (Routine) |
| 7 June 1986 | Aach, DE | daily low min | 3.9 C (39.0 F) | 1.9 C (3.4 F) | 43 years | 23 of 100 (Routine) |
| 7 June 1986 | Aach, DE | daily low max | 8.7 C (47.7 F) | 0.5 C (0.9 F) | 16 years | 11 of 100 (Routine) |
| 24 May 1986 | Aach, DE | daily high min | 12.5 C (54.5 F) | 0.3 C (0.5 F) | 36 years | 15 of 100 (Routine) |
| 21 May 1986 | Aach, DE | daily high min | 14.4 C (57.9 F) | 0.2 C (0.4 F) | 44 years | 18 of 100 (Routine) |
| 20 May 1986 | Aach, DE | daily high min | 13.8 C (56.8 F) | 1.2 C (2.2 F) | 32 years | 17 of 100 (Routine) |
| 13 April 1986 | Aach, DE | daily low max | 2.3 C (36.1 F) | 3.1 C (5.6 F) | 12 years | 13 of 100 (Routine) |
| 13 April 1986 | Aach, DE | daily low min | -5.0 C (23.0 F) | 0.3 C (0.5 F) | 8 years | 7 of 100 (Routine) |
| 12 April 1986 | Aach, DE | daily snow depth | 4.0 cm (1.6 in) | 3.0 cm (1.2 in) | 16 years | 20 of 100 (Routine) |
| 12 April 1986 | Aach, DE | monthly low max | 0.1 C (32.2 F) | 1.2 C (2.2 F) | 0 years | 17 of 100 (Routine) |
| 11 April 1986 | Aach, DE | daily snow depth | 5.0 cm (2.0 in) | 4.0 cm (1.6 in) | 48 years | 20 of 100 (Routine) |
| 11 April 1986 | Aach, DE | monthly low max | 1.3 C (34.3 F) | 0.3 C (0.5 F) | 13 years | 18 of 100 (Routine) |
| 9 April 1986 | Aach, DE | monthly rain | 52.2 mm (2.1 in) | 14.9 mm (0.6 in) | 7 years | 52 of 100 (Notable) |
| 5 April 1986 | Aach, DE | daily low max | 3.0 C (37.4 F) | 0.4 C (0.7 F) | 5 years | 6 of 100 (Routine) |
| 6 March 1986 | Aach, DE | daily snow depth | 28.0 cm (11.0 in) | 3.0 cm (1.2 in) | 44 years | 22 of 100 (Routine) |
| 5 March 1986 | Aach, DE | daily snow depth | 34.0 cm (13.4 in) | 6.0 cm (2.4 in) | 44 years | 26 of 100 (Routine) |
| 4 March 1986 | Aach, DE | daily snow depth | 39.0 cm (15.4 in) | 11.0 cm (4.3 in) | 44 years | 33 of 100 (Routine) |
Climate Trend
47 complete years, 1937 to 1985| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1937 | 9.0 C | +0.61 C |
| 1938 | 8.6 C | +0.27 C |
| 1939 | 8.2 C | -0.12 C |
| 1940 | 7.4 C | -0.98 C |
| 1941 | 7.8 C | -0.56 C |
| 1942 | 8.2 C | -0.14 C |
| 1943 | 9.9 C | +1.49 C |
| 1944 | 8.5 C | +0.18 C |
| 1947 | 9.6 C | +1.28 C |
| 1948 | 9.3 C | +0.89 C |
| 1949 | 9.7 C | +1.29 C |
| 1950 | 9.2 C | +0.83 C |
| 1951 | 9.0 C | +0.63 C |
| 1952 | 8.8 C | +0.40 C |
| 1953 | 8.7 C | +0.37 C |
| 1954 | 8.0 C | -0.36 C |
| 1955 | 8.0 C | -0.32 C |
| 1956 | 7.3 C | -1.11 C |
| 1957 | 8.7 C | +0.32 C |
| 1958 | 8.6 C | +0.19 C |
| 1959 | 8.7 C | +0.36 C |
| 1960 | 8.1 C | -0.25 C |
| 1961 | 9.1 C | +0.72 C |
| 1962 | 7.1 C | -1.25 C |
| 1963 | 7.2 C | -1.18 C |
| 1964 | 8.3 C | -0.10 C |
| 1965 | 7.4 C | -0.98 C |
| 1966 | 8.6 C | +0.22 C |
| 1967 | 8.6 C | +0.19 C |
| 1968 | 8.2 C | -0.18 C |
| 1969 | 7.9 C | -0.44 C |
| 1970 | 7.9 C | -0.44 C |
| 1971 | 8.1 C | -0.28 C |
| 1972 | 7.8 C | -0.59 C |
| 1973 | 7.9 C | -0.48 C |
| 1974 | 8.7 C | +0.37 C |
| 1975 | 8.6 C | +0.28 C |
| 1976 | 8.5 C | +0.13 C |
| 1977 | 8.7 C | +0.34 C |
| 1978 | 7.5 C | -0.85 C |
| 1979 | 8.3 C | -0.11 C |
| 1980 | 7.6 C | -0.78 C |
| 1981 | 8.3 C | -0.07 C |
| 1982 | 8.8 C | +0.43 C |
| 1983 | 8.9 C | +0.53 C |
| 1984 | 8.0 C | -0.39 C |
| 1985 | 7.9 C | -0.51 C |
The fitted trend in annual mean temperature here over 1937 to 1985 is -0.13 C (-0.26 to 0.00) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.23 F (-0.47 to 0.01) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.13 C (-0.26 to 0.00) per decade | -0.23 F (-0.47 to 0.01) per decade | 1937 to 1985 | 47 | Not clearly different from zero |
| Mean daily maximum | -0.14 C (-0.31 to 0.03) per decade | -0.3 F (-0.6 to 0.1) per decade | 1937 to 1985 | 47 | Not clearly different from zero |
| Mean daily minimum | -0.12 C (-0.24 to 0.01) per decade | -0.21 F (-0.43 to 0.01) per decade | 1937 to 1985 | 47 | Not clearly different from zero |
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
1912 to 1986| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.2 C (100.8 F) | 1943 | 32.2 C (90.0 F) | 48 |
| Coldest night (TNn) | -26.0 C (-14.8 F) | 1985 | -16.1 C (3.0 F) | 48 |
| Wettest day (Rx1day) | 76.1 mm (3.0 in) | 1920 | 36.2 mm (1.4 in) | 73 |
| Wettest five days (Rx5day) | 143.1 mm (5.6 in) | 1920 | 61.8 mm (2.4 in) | 73 |
| Longest dry spell (CDD) | 43 days | 1920 | 20 days | 73 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | n/a |
| 1917 | n/a |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1926 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1937 | 32.8 C (91.0 F) |
| 1938 | 31.5 C (88.7 F) |
| 1939 | 29.4 C (84.9 F) |
| 1940 | 28.8 C (83.8 F) |
| 1941 | 33.6 C (92.5 F) |
| 1942 | 31.6 C (88.9 F) |
| 1943 | 38.2 C (100.8 F) |
| 1944 | 35.0 C (95.0 F) |
| 1947 | 37.2 C (99.0 F) |
| 1948 | 30.6 C (87.1 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 32.2 C (90.0 F) |
| 1952 | 36.2 C (97.2 F) |
| 1953 | 31.4 C (88.5 F) |
| 1954 | 31.0 C (87.8 F) |
| 1955 | 31.8 C (89.2 F) |
| 1956 | 29.8 C (85.6 F) |
| 1957 | 34.8 C (94.6 F) |
| 1958 | 32.7 C (90.9 F) |
| 1959 | 32.4 C (90.3 F) |
| 1960 | 29.4 C (84.9 F) |
| 1961 | 32.2 C (90.0 F) |
| 1962 | 32.2 C (90.0 F) |
| 1963 | 32.8 C (91.0 F) |
| 1964 | 33.6 C (92.5 F) |
| 1965 | 30.8 C (87.4 F) |
| 1966 | 32.0 C (89.6 F) |
| 1967 | 32.2 C (90.0 F) |
| 1968 | 30.6 C (87.1 F) |
| 1969 | 31.6 C (88.9 F) |
| 1970 | 33.2 C (91.8 F) |
| 1971 | 32.8 C (91.0 F) |
| 1972 | 30.5 C (86.9 F) |
| 1973 | 30.0 C (86.0 F) |
| 1974 | 32.6 C (90.7 F) |
| 1975 | 31.0 C (87.8 F) |
| 1976 | 33.0 C (91.4 F) |
| 1977 | 33.2 C (91.8 F) |
| 1978 | 30.0 C (86.0 F) |
| 1979 | 32.0 C (89.6 F) |
| 1980 | 33.0 C (91.4 F) |
| 1981 | 31.2 C (88.2 F) |
| 1982 | 31.6 C (88.9 F) |
| 1983 | 37.0 C (98.6 F) |
| 1984 | 34.0 C (93.2 F) |
| 1985 | 34.2 C (93.6 F) |
| 1986 | 30.4 C (86.7 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | n/a |
| 1917 | n/a |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1926 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1937 | -11.0 C (12.2 F) |
| 1938 | -14.0 C (6.8 F) |
| 1939 | -21.2 C (-6.2 F) |
| 1940 | -20.4 C (-4.7 F) |
| 1941 | -18.0 C (-0.4 F) |
| 1942 | -23.2 C (-9.8 F) |
| 1943 | -12.2 C (10.0 F) |
| 1944 | -12.0 C (10.4 F) |
| 1947 | -19.0 C (-2.2 F) |
| 1948 | -13.2 C (8.2 F) |
| 1949 | -14.8 C (5.4 F) |
| 1950 | -12.6 C (9.3 F) |
| 1951 | -8.8 C (16.2 F) |
| 1952 | -12.8 C (9.0 F) |
| 1953 | -17.8 C (0.0 F) |
| 1954 | -16.0 C (3.2 F) |
| 1955 | -13.4 C (7.9 F) |
| 1956 | -23.0 C (-9.4 F) |
| 1957 | -15.2 C (4.6 F) |
| 1958 | -13.2 C (8.2 F) |
| 1959 | -16.2 C (2.8 F) |
| 1960 | -20.8 C (-5.4 F) |
| 1961 | -13.0 C (8.6 F) |
| 1962 | -18.0 C (-0.4 F) |
| 1963 | -24.0 C (-11.2 F) |
| 1964 | -18.0 C (-0.4 F) |
| 1965 | -16.4 C (2.5 F) |
| 1966 | -21.0 C (-5.8 F) |
| 1967 | -16.6 C (2.1 F) |
| 1968 | -23.4 C (-10.1 F) |
| 1969 | -16.2 C (2.8 F) |
| 1970 | -14.6 C (5.7 F) |
| 1971 | -18.8 C (-1.8 F) |
| 1972 | -13.5 C (7.7 F) |
| 1973 | -20.4 C (-4.7 F) |
| 1974 | -8.4 C (16.9 F) |
| 1975 | -16.2 C (2.8 F) |
| 1976 | -17.0 C (1.4 F) |
| 1977 | -9.6 C (14.7 F) |
| 1978 | -14.8 C (5.4 F) |
| 1979 | -19.5 C (-3.1 F) |
| 1980 | -16.0 C (3.2 F) |
| 1981 | -16.0 C (3.2 F) |
| 1982 | -14.8 C (5.4 F) |
| 1983 | -13.0 C (8.6 F) |
| 1984 | -11.4 C (11.5 F) |
| 1985 | -26.0 C (-14.8 F) |
| 1986 | -16.6 C (2.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1912 | 37.3 mm (1.5 in) |
| 1913 | 22.6 mm (0.9 in) |
| 1914 | 33.4 mm (1.3 in) |
| 1915 | 40.7 mm (1.6 in) |
| 1916 | 36.2 mm (1.4 in) |
| 1917 | 43.2 mm (1.7 in) |
| 1918 | 31.7 mm (1.2 in) |
| 1919 | 17.8 mm (0.7 in) |
| 1920 | 76.1 mm (3.0 in) |
| 1921 | 37.7 mm (1.5 in) |
| 1922 | 33.8 mm (1.3 in) |
| 1923 | 34.6 mm (1.4 in) |
| 1924 | 25.6 mm (1.0 in) |
| 1925 | 44.7 mm (1.8 in) |
| 1926 | 31.3 mm (1.2 in) |
| 1927 | 35.6 mm (1.4 in) |
| 1928 | 25.9 mm (1.0 in) |
| 1929 | 44.2 mm (1.7 in) |
| 1930 | 63.4 mm (2.5 in) |
| 1931 | 33.5 mm (1.3 in) |
| 1932 | 41.4 mm (1.6 in) |
| 1933 | 42.2 mm (1.7 in) |
| 1934 | 49.8 mm (2.0 in) |
| 1935 | 26.4 mm (1.0 in) |
| 1936 | 32.4 mm (1.3 in) |
| 1937 | 39.1 mm (1.5 in) |
| 1938 | 30.2 mm (1.2 in) |
| 1939 | 36.2 mm (1.4 in) |
| 1940 | 38.7 mm (1.5 in) |
| 1941 | 24.1 mm (0.9 in) |
| 1942 | 36.2 mm (1.4 in) |
| 1943 | 22.0 mm (0.9 in) |
| 1944 | 38.6 mm (1.5 in) |
| 1947 | 30.8 mm (1.2 in) |
| 1948 | 33.8 mm (1.3 in) |
| 1949 | 29.4 mm (1.2 in) |
| 1950 | 39.0 mm (1.5 in) |
| 1951 | 28.6 mm (1.1 in) |
| 1952 | 60.5 mm (2.4 in) |
| 1953 | 41.7 mm (1.6 in) |
| 1954 | 43.0 mm (1.7 in) |
| 1955 | 49.8 mm (2.0 in) |
| 1956 | 38.9 mm (1.5 in) |
| 1957 | 32.8 mm (1.3 in) |
| 1958 | 31.7 mm (1.2 in) |
| 1959 | 45.5 mm (1.8 in) |
| 1960 | 40.8 mm (1.6 in) |
| 1961 | 23.7 mm (0.9 in) |
| 1962 | 22.7 mm (0.9 in) |
| 1963 | 46.6 mm (1.8 in) |
| 1964 | 40.8 mm (1.6 in) |
| 1965 | 65.0 mm (2.6 in) |
| 1966 | 32.2 mm (1.3 in) |
| 1967 | 25.0 mm (1.0 in) |
| 1968 | 53.2 mm (2.1 in) |
| 1969 | 31.8 mm (1.3 in) |
| 1970 | 26.5 mm (1.0 in) |
| 1971 | 47.6 mm (1.9 in) |
| 1972 | 52.4 mm (2.1 in) |
| 1973 | 47.5 mm (1.9 in) |
| 1974 | 55.7 mm (2.2 in) |
| 1975 | 70.5 mm (2.8 in) |
| 1976 | 35.5 mm (1.4 in) |
| 1977 | 31.2 mm (1.2 in) |
| 1978 | 67.2 mm (2.6 in) |
| 1979 | 26.8 mm (1.1 in) |
| 1980 | 35.2 mm (1.4 in) |
| 1981 | 29.6 mm (1.2 in) |
| 1982 | 55.5 mm (2.2 in) |
| 1983 | 34.0 mm (1.3 in) |
| 1984 | 29.8 mm (1.2 in) |
| 1985 | 21.7 mm (0.9 in) |
| 1986 | 52.2 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1912 | 58.3 mm (2.3 in) |
| 1913 | 54.8 mm (2.2 in) |
| 1914 | 46.1 mm (1.8 in) |
| 1915 | 77.6 mm (3.1 in) |
| 1916 | 61.8 mm (2.4 in) |
| 1917 | 73.5 mm (2.9 in) |
| 1918 | 52.9 mm (2.1 in) |
| 1919 | 65.5 mm (2.6 in) |
| 1920 | 143.1 mm (5.6 in) |
| 1921 | 64.3 mm (2.5 in) |
| 1922 | 60.1 mm (2.4 in) |
| 1923 | 55.9 mm (2.2 in) |
| 1924 | 49.7 mm (2.0 in) |
| 1925 | 71.6 mm (2.8 in) |
| 1926 | 84.3 mm (3.3 in) |
| 1927 | 62.2 mm (2.4 in) |
| 1928 | 44.9 mm (1.8 in) |
| 1929 | 61.1 mm (2.4 in) |
| 1930 | 77.1 mm (3.0 in) |
| 1931 | 50.9 mm (2.0 in) |
| 1932 | 75.0 mm (3.0 in) |
| 1933 | 73.9 mm (2.9 in) |
| 1934 | 74.3 mm (2.9 in) |
| 1935 | 55.3 mm (2.2 in) |
| 1936 | 70.1 mm (2.8 in) |
| 1937 | 92.4 mm (3.6 in) |
| 1938 | 84.8 mm (3.3 in) |
| 1939 | 60.0 mm (2.4 in) |
| 1940 | 74.0 mm (2.9 in) |
| 1941 | 40.7 mm (1.6 in) |
| 1942 | 54.1 mm (2.1 in) |
| 1943 | 45.8 mm (1.8 in) |
| 1944 | 77.2 mm (3.0 in) |
| 1947 | 54.3 mm (2.1 in) |
| 1948 | 49.6 mm (2.0 in) |
| 1949 | 45.8 mm (1.8 in) |
| 1950 | 67.6 mm (2.7 in) |
| 1951 | 49.0 mm (1.9 in) |
| 1952 | 61.7 mm (2.4 in) |
| 1953 | 94.4 mm (3.7 in) |
| 1954 | 74.4 mm (2.9 in) |
| 1955 | 91.2 mm (3.6 in) |
| 1956 | 54.3 mm (2.1 in) |
| 1957 | 72.1 mm (2.8 in) |
| 1958 | 50.7 mm (2.0 in) |
| 1959 | 53.2 mm (2.1 in) |
| 1960 | 110.4 mm (4.3 in) |
| 1961 | 57.5 mm (2.3 in) |
| 1962 | 45.1 mm (1.8 in) |
| 1963 | 75.9 mm (3.0 in) |
| 1964 | 48.4 mm (1.9 in) |
| 1965 | 85.8 mm (3.4 in) |
| 1966 | 60.7 mm (2.4 in) |
| 1967 | 42.0 mm (1.7 in) |
| 1968 | 65.6 mm (2.6 in) |
| 1969 | 67.8 mm (2.7 in) |
| 1970 | 59.5 mm (2.3 in) |
| 1971 | 54.5 mm (2.1 in) |
| 1972 | 110.3 mm (4.3 in) |
| 1973 | 65.1 mm (2.6 in) |
| 1974 | 64.0 mm (2.5 in) |
| 1975 | 105.3 mm (4.1 in) |
| 1976 | 79.0 mm (3.1 in) |
| 1977 | 53.5 mm (2.1 in) |
| 1978 | 101.2 mm (4.0 in) |
| 1979 | 62.3 mm (2.5 in) |
| 1980 | 58.7 mm (2.3 in) |
| 1981 | 60.6 mm (2.4 in) |
| 1982 | 110.1 mm (4.3 in) |
| 1983 | 84.5 mm (3.3 in) |
| 1984 | 48.8 mm (1.9 in) |
| 1985 | 42.3 mm (1.7 in) |
| 1986 | 61.7 mm (2.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1912 | 23 days |
| 1913 | 18 days |
| 1914 | 33 days |
| 1915 | 13 days |
| 1916 | 21 days |
| 1917 | 21 days |
| 1918 | 26 days |
| 1919 | 14 days |
| 1920 | 43 days |
| 1921 | 39 days |
| 1922 | 13 days |
| 1923 | 18 days |
| 1924 | 27 days |
| 1925 | 14 days |
| 1926 | 33 days |
| 1927 | 18 days |
| 1928 | 18 days |
| 1929 | 23 days |
| 1930 | 34 days |
| 1931 | 17 days |
| 1932 | 26 days |
| 1933 | 22 days |
| 1934 | 26 days |
| 1935 | 14 days |
| 1936 | 19 days |
| 1937 | 15 days |
| 1938 | 26 days |
| 1939 | 20 days |
| 1940 | 15 days |
| 1941 | 19 days |
| 1942 | 23 days |
| 1943 | 40 days |
| 1944 | 20 days |
| 1947 | 18 days |
| 1948 | 30 days |
| 1949 | 33 days |
| 1950 | 27 days |
| 1951 | 25 days |
| 1952 | 21 days |
| 1953 | 41 days |
| 1954 | 14 days |
| 1955 | 28 days |
| 1956 | 16 days |
| 1957 | 19 days |
| 1958 | 28 days |
| 1959 | 23 days |
| 1960 | 12 days |
| 1961 | 18 days |
| 1962 | 27 days |
| 1963 | 35 days |
| 1964 | 17 days |
| 1965 | 14 days |
| 1966 | 14 days |
| 1967 | 12 days |
| 1968 | 21 days |
| 1969 | 23 days |
| 1970 | 14 days |
| 1971 | 24 days |
| 1972 | 30 days |
| 1973 | 17 days |
| 1974 | 18 days |
| 1975 | 15 days |
| 1976 | 31 days |
| 1977 | 15 days |
| 1978 | 20 days |
| 1979 | 17 days |
| 1980 | 18 days |
| 1981 | 18 days |
| 1982 | 15 days |
| 1983 | 38 days |
| 1984 | 21 days |
| 1985 | 25 days |
| 1986 | 16 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
47 years with a frostAcross 47 years with a frost, the median last spring frost at Aach falls on 4 May and the median first autumn frost on 17 October, which leaves a median of 162 days between them.
Fitted over all years, the growing season changes by -0.4 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1956 to 1985) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | n/a | 5 May | n/a | +1.4 days per decade |
| First autumn frost | 17 October | n/a | 18 October | n/a | +0.9 days per decade |
| Growing days | 162 days | n/a | 163 days | n/a | -0.4 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
72 years, 1912 to 1985A day with at least 36.0 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 79.7 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 | 36.0 mm (1.4 in) | |
| 5 years | 46.9 mm (1.8 in) | |
| 10 years | 54.4 mm (2.1 in) | |
| 25 years | 64.3 mm (2.5 in) | |
| 50 years | 71.9 mm (2.8 in) | |
| 100 years | 79.7 mm (3.1 in) | Longer than the 72 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, 72 years of values from 1912 to 1985.
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: 76.1 mm (3.0 in) in 1920; 70.5 mm (2.8 in) in 1975; 67.2 mm (2.6 in) in 1978.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Aach, at 1959. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1959 ran 0.2 C (0.3 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1959 | -0.2 | -0.3 | 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.
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).