Tongde Weather Records (CHM00052957)
Record envelope, standing records and threshold days for Tongde (CHM00052957), China, with 45 years of record.
Key Facts for Tongde
- Tongde (CHM00052957) is a weather station in China at 35.27 latitude and 100.65 longitude, 3,289 m (10,791 ft) above sea level.
- The station reports from 1954 to 1998, 45 years of record.
- 1,464 records set at Tongde still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Tongde set a daily record high maximum temperature of 8.8 C (47.8 F) on 1 December 1998.
About the Station
- Location: China, 35.27 latitude, 100.65 longitude.
- Elevation: 3,289 m (10,791 ft).
- Period of record: 1954 to 1998, 45 years.
- Eligible elements: tmax, tmin, prcp.
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 | 13.4 C (56.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Feb | 16.2 C (61.2 F) | -35.1 C (-31.2 F) | n/a | n/a |
| Mar | 20.6 C (69.1 F) | -27.0 C (-16.6 F) | n/a | n/a |
| Apr | 25.5 C (77.9 F) | -20.2 C (-4.4 F) | n/a | n/a |
| May | 25.4 C (77.7 F) | -12.9 C (8.8 F) | n/a | n/a |
| Jun | 28.1 C (82.6 F) | -9.8 C (14.4 F) | n/a | n/a |
| Jul | 28.2 C (82.8 F) | -4.4 C (24.1 F) | n/a | n/a |
| Aug | 30.6 C (87.1 F) | -6.8 C (19.8 F) | n/a | n/a |
| Sep | 26.4 C (79.5 F) | -12.1 C (10.2 F) | n/a | n/a |
| Oct | 25.3 C (77.5 F) | -20.9 C (-5.6 F) | n/a | n/a |
| Nov | 15.7 C (60.3 F) | -28.4 C (-19.1 F) | n/a | n/a |
| Dec | 11.0 C (51.8 F) | -32.8 C (-27.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1954 | 67 |
| 1955 | 46 |
| 1956 | 46 |
| 1957 | 51 |
| 1958 | 36 |
| 1959 | 54 |
| 1960 | 25 |
| 1961 | 44 |
| 1962 | 34 |
| 1963 | 23 |
| 1964 | 27 |
| 1965 | 38 |
| 1966 | 33 |
| 1967 | 29 |
| 1968 | 16 |
| 1969 | 33 |
| 1970 | 44 |
| 1971 | 43 |
| 1972 | 30 |
| 1973 | 24 |
| 1974 | 29 |
| 1975 | 21 |
| 1976 | 33 |
| 1977 | 43 |
| 1978 | 26 |
| 1979 | 28 |
| 1980 | 22 |
| 1981 | 31 |
| 1982 | 32 |
| 1983 | 24 |
| 1984 | 19 |
| 1985 | 20 |
| 1986 | 24 |
| 1987 | 30 |
| 1988 | 32 |
| 1989 | 23 |
| 1990 | 48 |
| 1991 | 35 |
| 1992 | 23 |
| 1993 | 46 |
| 1994 | 26 |
| 1995 | 44 |
| 1996 | 18 |
| 1997 | 14 |
| 1998 | 30 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1995-01-04 | Record low maximum temperature | Record low maximum temperature -17.4 C (0.7 F) |
| 1995-01-05 | Record low minimum temperature | Record low minimum temperature -37.2 C (-35.0 F) |
Wettest Day of Each Month
Jul: 47.5 mm (1.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 4.0 mm (0.16 in) | 8 January 1993 |
| Feb | 5.4 mm (0.21 in) | 20 February 1989 |
| Mar | 9.9 mm (0.39 in) | 27 March 1990 |
| Apr | 17.1 mm (0.7 in) | 24 April 1966 |
| May | 23.4 mm (0.9 in) | 20 May 1959 |
| Jun | 42.2 mm (1.7 in) | 30 June 1955 |
| Jul | 47.5 mm (1.9 in) | 29 July 1958 |
| Aug | 39.9 mm (1.6 in) | 2 August 1986 |
| Sep | 25.2 mm (1.0 in) | 13 September 1956 |
| Oct | 26.2 mm (1.0 in) | 15 October 1961 |
| Nov | 9.4 mm (0.37 in) | 13 November 1974 |
| Dec | 5.2 mm (0.20 in) | 13 December 1957 |
Period of Record Coverage
1954 to 1998| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1954 | 325 | 89% | No |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 206 | 56% | No |
| 1958 | 317 | 87% | No |
| 1959 | 364 | 100% | Yes |
| 1960 | 240 | 66% | No |
| 1961 | 299 | 82% | No |
| 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 | 358 | 98% | 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 | 365 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 347 | 95% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 1 December 1998 | Tongde, CN | daily high max | 8.8 C (47.8 F) | 1.5 C (2.7 F) | 4 years | 8 of 100 (Routine) |
| 30 November 1998 | Tongde, CN | daily high max | 10.9 C (51.6 F) | 3.8 C (6.8 F) | 4 years | 14 of 100 (Routine) |
| 29 November 1998 | Tongde, CN | daily high max | 8.7 C (47.7 F) | 0.1 C (0.2 F) | 3 years | 4 of 100 (Routine) |
| 14 November 1998 | Tongde, CN | daily high max | 14.5 C (58.1 F) | 1.2 C (2.2 F) | 32 years | 16 of 100 (Routine) |
| 13 November 1998 | Tongde, CN | daily high max | 12.4 C (54.3 F) | 1.0 C (1.8 F) | 4 years | 7 of 100 (Routine) |
| 27 October 1998 | Tongde, CN | daily high max | 13.8 C (56.8 F) | 0.1 C (0.2 F) | 16 years | 8 of 100 (Routine) |
| 17 September 1998 | Tongde, CN | daily high min | 7.0 C (44.6 F) | 0.3 C (0.5 F) | 29 years | 12 of 100 (Routine) |
| 15 September 1998 | Tongde, CN | daily high max | 22.2 C (72.0 F) | 0.1 C (0.2 F) | 35 years | 14 of 100 (Routine) |
| 14 September 1998 | Tongde, CN | daily high max | 19.8 C (67.6 F) | 0.1 C (0.2 F) | 35 years | 14 of 100 (Routine) |
| 12 September 1998 | Tongde, CN | daily high max | 23.3 C (73.9 F) | 1.1 C (2.0 F) | 35 years | 16 of 100 (Routine) |
| 11 September 1998 | Tongde, CN | daily high max | 24.9 C (76.8 F) | 2.4 C (4.3 F) | 11 years | 13 of 100 (Routine) |
| 4 September 1998 | Tongde, CN | daily low max | 11.4 C (52.5 F) | 0.6 C (1.1 F) | 25 years | 12 of 100 (Routine) |
| 3 September 1998 | Tongde, CN | daily rain | 17.0 mm (0.7 in) | 3.1 mm (0.12 in) | 24 years | 17 of 100 (Routine) |
| 2 September 1998 | Tongde, CN | daily low max | 8.7 C (47.7 F) | 1.8 C (3.2 F) | 32 years | 17 of 100 (Routine) |
| 28 August 1998 | Tongde, CN | daily low max | 13.6 C (56.5 F) | 0.7 C (1.3 F) | 21 years | 12 of 100 (Routine) |
| 13 July 1998 | Tongde, CN | daily high max | 23.7 C (74.7 F) | 0.3 C (0.5 F) | 39 years | 15 of 100 (Routine) |
| 11 July 1998 | Tongde, CN | daily low max | 11.4 C (52.5 F) | 0.4 C (0.7 F) | 17 years | 10 of 100 (Routine) |
| 2 July 1998 | Tongde, CN | daily high max | 25.0 C (77.0 F) | 2.3 C (4.1 F) | 44 years | 23 of 100 (Routine) |
| 15 June 1998 | Tongde, CN | daily high min | 11.0 C (51.8 F) | 1.0 C (1.8 F) | 17 years | 11 of 100 (Routine) |
| 14 June 1998 | Tongde, CN | daily high max | 26.0 C (78.8 F) | 3.6 C (6.5 F) | 28 years | 22 of 100 (Routine) |
Climate Trend
38 complete years, 1955 to 1997| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1955 | 3.3 C | +2.03 C |
| 1956 | 3.3 C | +2.00 C |
| 1959 | 1.3 C | +0.03 C |
| 1962 | 0.8 C | -0.44 C |
| 1963 | 0.9 C | -0.36 C |
| 1964 | 1.2 C | -0.06 C |
| 1965 | 0.5 C | -0.80 C |
| 1966 | 1.2 C | -0.10 C |
| 1967 | 0.5 C | -0.78 C |
| 1968 | 0.7 C | -0.54 C |
| 1969 | 1.3 C | +0.03 C |
| 1970 | 0.5 C | -0.80 C |
| 1971 | 1.1 C | -0.17 C |
| 1972 | 1.6 C | +0.37 C |
| 1973 | 1.4 C | +0.13 C |
| 1974 | 1.0 C | -0.22 C |
| 1975 | 1.3 C | +0.07 C |
| 1976 | 0.8 C | -0.47 C |
| 1977 | 0.3 C | -0.97 C |
| 1978 | 1.2 C | -0.09 C |
| 1979 | 1.3 C | +0.09 C |
| 1980 | 1.0 C | -0.29 C |
| 1981 | 1.7 C | +0.44 C |
| 1982 | 0.9 C | -0.35 C |
| 1983 | 0.3 C | -0.91 C |
| 1984 | 1.2 C | -0.09 C |
| 1985 | 1.0 C | -0.26 C |
| 1986 | 1.0 C | -0.24 C |
| 1987 | 1.8 C | +0.57 C |
| 1988 | 2.0 C | +0.79 C |
| 1989 | 1.4 C | +0.18 C |
| 1990 | 2.0 C | +0.79 C |
| 1991 | 1.6 C | +0.31 C |
| 1993 | 1.2 C | -0.08 C |
| 1994 | 1.7 C | +0.43 C |
| 1995 | 0.9 C | -0.37 C |
| 1996 | 1.6 C | +0.33 C |
| 1997 | 0.9 C | -0.35 C |
The fitted trend in annual mean temperature here over 1955 to 1997 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.1 C (-0.2 to 0.1) per decade | -0.1 F (-0.4 to 0.2) per decade | 1955 to 1997 | 38 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.3 to 0.1) per decade | -0.2 F (-0.6 to 0.1) per decade | 1955 to 1997 | 38 | Not clearly different from zero |
| Mean daily minimum | 0.03 C (-0.23 to 0.29) per decade | 0.1 F (-0.4 to 0.5) per decade | 1955 to 1997 | 38 | 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
1954 to 1998| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 30.6 C (87.1 F) | 1957 | 25.9 C (78.6 F) | 45 |
| Coldest night (TNn) | -37.2 C (-35.0 F) | 1995 | -30.3 C (-22.5 F) | 45 |
| Wettest day (Rx1day) | 47.5 mm (1.9 in) | 1958 | 27.3 mm (1.1 in) | 45 |
| Wettest five days (Rx5day) | 78.5 mm (3.1 in) | 1974 | 49.3 mm (1.9 in) | 45 |
| Longest dry spell (CDD) | 92 days | 1966 | 59 days | 45 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1954 | 27.0 C (80.6 F) |
| 1955 | 25.4 C (77.7 F) |
| 1956 | 27.6 C (81.7 F) |
| 1957 | 30.6 C (87.1 F) |
| 1958 | 25.2 C (77.4 F) |
| 1959 | 26.0 C (78.8 F) |
| 1960 | 27.2 C (81.0 F) |
| 1961 | 28.1 C (82.6 F) |
| 1962 | 25.1 C (77.2 F) |
| 1963 | 23.5 C (74.3 F) |
| 1964 | 22.4 C (72.3 F) |
| 1965 | 24.5 C (76.1 F) |
| 1966 | 27.2 C (81.0 F) |
| 1967 | 24.8 C (76.6 F) |
| 1968 | 23.6 C (74.5 F) |
| 1969 | 27.9 C (82.2 F) |
| 1970 | 26.1 C (79.0 F) |
| 1971 | 27.2 C (81.0 F) |
| 1972 | 27.5 C (81.5 F) |
| 1973 | 27.8 C (82.0 F) |
| 1974 | 23.9 C (75.0 F) |
| 1975 | 25.9 C (78.6 F) |
| 1976 | 24.7 C (76.5 F) |
| 1977 | 25.9 C (78.6 F) |
| 1978 | 27.1 C (80.8 F) |
| 1979 | 24.0 C (75.2 F) |
| 1980 | 22.9 C (73.2 F) |
| 1981 | 28.0 C (82.4 F) |
| 1982 | 23.5 C (74.3 F) |
| 1983 | 22.9 C (73.2 F) |
| 1984 | 23.6 C (74.5 F) |
| 1985 | 26.6 C (79.9 F) |
| 1986 | 26.9 C (80.4 F) |
| 1987 | 23.9 C (75.0 F) |
| 1988 | 26.4 C (79.5 F) |
| 1989 | 24.4 C (75.9 F) |
| 1990 | 24.3 C (75.7 F) |
| 1991 | 25.4 C (77.7 F) |
| 1992 | 25.4 C (77.7 F) |
| 1993 | 25.0 C (77.0 F) |
| 1994 | 26.4 C (79.5 F) |
| 1995 | 26.4 C (79.5 F) |
| 1996 | 26.4 C (79.5 F) |
| 1997 | 28.0 C (82.4 F) |
| 1998 | 26.0 C (78.8 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1954 | -30.0 C (-22.0 F) |
| 1955 | -26.9 C (-16.4 F) |
| 1956 | -25.6 C (-14.1 F) |
| 1957 | -25.6 C (-14.1 F) |
| 1958 | -28.7 C (-19.7 F) |
| 1959 | -30.2 C (-22.4 F) |
| 1960 | -30.6 C (-23.1 F) |
| 1961 | -34.4 C (-29.9 F) |
| 1962 | -32.0 C (-25.6 F) |
| 1963 | -31.7 C (-25.1 F) |
| 1964 | -32.0 C (-25.6 F) |
| 1965 | -32.8 C (-27.0 F) |
| 1966 | -30.4 C (-22.7 F) |
| 1967 | -33.1 C (-27.6 F) |
| 1968 | -31.4 C (-24.5 F) |
| 1969 | -27.6 C (-17.7 F) |
| 1970 | -30.0 C (-22.0 F) |
| 1971 | -36.2 C (-33.2 F) |
| 1972 | -27.7 C (-17.9 F) |
| 1973 | -29.9 C (-21.8 F) |
| 1974 | -30.8 C (-23.4 F) |
| 1975 | -32.1 C (-25.8 F) |
| 1976 | -29.5 C (-21.1 F) |
| 1977 | -29.5 C (-21.1 F) |
| 1978 | -29.8 C (-21.6 F) |
| 1979 | -31.0 C (-23.8 F) |
| 1980 | -30.3 C (-22.5 F) |
| 1981 | -30.3 C (-22.5 F) |
| 1982 | -30.6 C (-23.1 F) |
| 1983 | -31.1 C (-24.0 F) |
| 1984 | -28.2 C (-18.8 F) |
| 1985 | -30.5 C (-22.9 F) |
| 1986 | -28.6 C (-19.5 F) |
| 1987 | -29.4 C (-20.9 F) |
| 1988 | -30.9 C (-23.6 F) |
| 1989 | -33.2 C (-27.8 F) |
| 1990 | -30.1 C (-22.2 F) |
| 1991 | -30.4 C (-22.7 F) |
| 1992 | -29.8 C (-21.6 F) |
| 1993 | -31.7 C (-25.1 F) |
| 1994 | -27.7 C (-17.9 F) |
| 1995 | -37.2 C (-35.0 F) |
| 1996 | -28.6 C (-19.5 F) |
| 1997 | -28.1 C (-18.6 F) |
| 1998 | -28.8 C (-19.8 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1954 | 29.8 mm (1.2 in) |
| 1955 | 42.2 mm (1.7 in) |
| 1956 | 25.2 mm (1.0 in) |
| 1957 | 28.5 mm (1.1 in) |
| 1958 | 47.5 mm (1.9 in) |
| 1959 | 31.1 mm (1.2 in) |
| 1960 | 26.3 mm (1.0 in) |
| 1961 | 29.4 mm (1.2 in) |
| 1962 | 19.3 mm (0.8 in) |
| 1963 | 23.8 mm (0.9 in) |
| 1964 | 23.1 mm (0.9 in) |
| 1965 | 19.4 mm (0.8 in) |
| 1966 | 24.5 mm (1.0 in) |
| 1967 | 27.3 mm (1.1 in) |
| 1968 | 19.6 mm (0.8 in) |
| 1969 | 34.9 mm (1.4 in) |
| 1970 | 27.3 mm (1.1 in) |
| 1971 | 39.9 mm (1.6 in) |
| 1972 | 27.8 mm (1.1 in) |
| 1973 | 25.4 mm (1.0 in) |
| 1974 | 31.4 mm (1.2 in) |
| 1975 | 29.0 mm (1.1 in) |
| 1976 | 30.0 mm (1.2 in) |
| 1977 | 18.3 mm (0.7 in) |
| 1978 | 30.6 mm (1.2 in) |
| 1979 | 19.3 mm (0.8 in) |
| 1980 | 18.4 mm (0.7 in) |
| 1981 | 23.1 mm (0.9 in) |
| 1982 | 16.8 mm (0.7 in) |
| 1983 | 21.3 mm (0.8 in) |
| 1984 | 28.9 mm (1.1 in) |
| 1985 | 24.5 mm (1.0 in) |
| 1986 | 39.9 mm (1.6 in) |
| 1987 | 30.7 mm (1.2 in) |
| 1988 | 23.1 mm (0.9 in) |
| 1989 | 30.7 mm (1.2 in) |
| 1990 | 27.8 mm (1.1 in) |
| 1991 | 25.0 mm (1.0 in) |
| 1992 | 25.3 mm (1.0 in) |
| 1993 | 29.6 mm (1.2 in) |
| 1994 | 23.7 mm (0.9 in) |
| 1995 | 25.5 mm (1.0 in) |
| 1996 | 32.6 mm (1.3 in) |
| 1997 | 29.8 mm (1.2 in) |
| 1998 | 19.1 mm (0.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1954 | 47.9 mm (1.9 in) |
| 1955 | 59.0 mm (2.3 in) |
| 1956 | 38.3 mm (1.5 in) |
| 1957 | 37.0 mm (1.5 in) |
| 1958 | 74.8 mm (2.9 in) |
| 1959 | 74.1 mm (2.9 in) |
| 1960 | 34.9 mm (1.4 in) |
| 1961 | 69.9 mm (2.8 in) |
| 1962 | 37.7 mm (1.5 in) |
| 1963 | 50.1 mm (2.0 in) |
| 1964 | 60.6 mm (2.4 in) |
| 1965 | 36.7 mm (1.4 in) |
| 1966 | 47.9 mm (1.9 in) |
| 1967 | 51.5 mm (2.0 in) |
| 1968 | 47.7 mm (1.9 in) |
| 1969 | 49.3 mm (1.9 in) |
| 1970 | 40.5 mm (1.6 in) |
| 1971 | 66.6 mm (2.6 in) |
| 1972 | 55.9 mm (2.2 in) |
| 1973 | 37.1 mm (1.5 in) |
| 1974 | 78.5 mm (3.1 in) |
| 1975 | 73.2 mm (2.9 in) |
| 1976 | 63.4 mm (2.5 in) |
| 1977 | 40.2 mm (1.6 in) |
| 1978 | 41.8 mm (1.6 in) |
| 1979 | 39.8 mm (1.6 in) |
| 1980 | 49.4 mm (1.9 in) |
| 1981 | 63.5 mm (2.5 in) |
| 1982 | 49.3 mm (1.9 in) |
| 1983 | 56.9 mm (2.2 in) |
| 1984 | 61.2 mm (2.4 in) |
| 1985 | 59.5 mm (2.3 in) |
| 1986 | 47.7 mm (1.9 in) |
| 1987 | 66.8 mm (2.6 in) |
| 1988 | 35.1 mm (1.4 in) |
| 1989 | 64.8 mm (2.6 in) |
| 1990 | 41.3 mm (1.6 in) |
| 1991 | 45.0 mm (1.8 in) |
| 1992 | 47.2 mm (1.9 in) |
| 1993 | 40.0 mm (1.6 in) |
| 1994 | 36.7 mm (1.4 in) |
| 1995 | 61.0 mm (2.4 in) |
| 1996 | 61.4 mm (2.4 in) |
| 1997 | 57.0 mm (2.2 in) |
| 1998 | 29.9 mm (1.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1954 | 61 days |
| 1955 | 77 days |
| 1956 | 83 days |
| 1957 | 91 days |
| 1958 | 90 days |
| 1959 | 37 days |
| 1960 | 39 days |
| 1961 | 79 days |
| 1962 | 51 days |
| 1963 | 38 days |
| 1964 | 81 days |
| 1965 | 46 days |
| 1966 | 92 days |
| 1967 | 60 days |
| 1968 | 59 days |
| 1969 | 56 days |
| 1970 | 63 days |
| 1971 | 54 days |
| 1972 | 47 days |
| 1973 | 54 days |
| 1974 | 35 days |
| 1975 | 59 days |
| 1976 | 46 days |
| 1977 | 67 days |
| 1978 | 53 days |
| 1979 | 58 days |
| 1980 | 90 days |
| 1981 | 56 days |
| 1982 | 41 days |
| 1983 | 70 days |
| 1984 | 61 days |
| 1985 | 58 days |
| 1986 | 75 days |
| 1987 | 42 days |
| 1988 | 61 days |
| 1989 | 46 days |
| 1990 | 76 days |
| 1991 | 63 days |
| 1992 | 84 days |
| 1993 | 71 days |
| 1994 | 76 days |
| 1995 | 29 days |
| 1996 | 40 days |
| 1997 | 52 days |
| 1998 | 21 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
38 years with a frostAcross 38 years with a frost, the median last spring frost at Tongde falls on 21 June and the median first autumn frost on 12 July, which leaves a median of 23 days between them.
Fitted over all years, the growing season changes by -1.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1967 to 1997) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 21 June | n/a | 20 June | n/a | -0.1 days per decade |
| First autumn frost | 12 July | n/a | 12 July | n/a | -2.0 days per decade |
| Growing days | 23 days | n/a | 23 days | n/a | -1.9 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
44 years, 1954 to 1998A day with at least 26.3 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 41.9 mm (1.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 26.3 mm (1.0 in) | |
| 5 years | 31.6 mm (1.2 in) | |
| 10 years | 34.5 mm (1.4 in) | |
| 25 years | 37.8 mm (1.5 in) | |
| 50 years | 40.0 mm (1.6 in) | Longer than the 44 years of record |
| 100 years | 41.9 mm (1.6 in) | Longer than the 44 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, 44 years of values from 1954 to 1998.
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: 42.2 mm (1.7 in) in 1955; 39.9 mm (1.6 in) in 1971; 39.9 mm (1.6 in) in 1986.
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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).