Offenbach/M. (Stadt) Weather Records (GME00127006)
Record envelope, standing records and threshold days for Offenbach/M. (Stadt) (GME00127006), Germany, with 39 years of record.
Key Facts for Offenbach/M. (Stadt)
- Offenbach/M. (Stadt) (GME00127006) is a weather station in Germany at 50.10 latitude and 8.76 longitude, 110 m (361 ft) above sea level.
- The station reports from 1957 to 1995, 39 years of record.
- 1,464 records set at Offenbach/M. (Stadt) still stand.
- Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
- Offenbach/M. (Stadt) set a daily record high minimum temperature of 11.0 C (51.8 F) on 30 October 1995.
About the Station
- Location: Germany, 50.10 latitude, 8.76 longitude.
- Elevation: 110 m (361 ft).
- Period of record: 1957 to 1995, 39 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 | 15.5 C (59.9 F) | -18.2 C (-0.8 F) | n/a | n/a |
| Feb | 18.0 C (64.4 F) | -15.4 C (4.3 F) | n/a | n/a |
| Mar | 25.1 C (77.2 F) | -12.0 C (10.4 F) | n/a | n/a |
| Apr | 30.1 C (86.2 F) | -4.2 C (24.4 F) | n/a | n/a |
| May | 31.1 C (88.0 F) | -1.4 C (29.5 F) | n/a | n/a |
| Jun | 34.3 C (93.7 F) | 2.7 C (36.9 F) | n/a | n/a |
| Jul | 36.4 C (97.5 F) | 5.8 C (42.4 F) | n/a | n/a |
| Aug | 36.5 C (97.7 F) | 5.9 C (42.6 F) | n/a | n/a |
| Sep | 31.8 C (89.2 F) | 1.6 C (34.9 F) | n/a | n/a |
| Oct | 28.0 C (82.4 F) | -2.4 C (27.7 F) | n/a | n/a |
| Nov | 19.8 C (67.6 F) | -7.3 C (18.9 F) | n/a | n/a |
| Dec | 17.5 C (63.5 F) | -15.0 C (5.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1957 | 2 |
| 1958 | 42 |
| 1959 | 29 |
| 1960 | 25 |
| 1961 | 60 |
| 1962 | 71 |
| 1963 | 61 |
| 1964 | 49 |
| 1965 | 28 |
| 1966 | 41 |
| 1967 | 37 |
| 1968 | 29 |
| 1969 | 42 |
| 1970 | 23 |
| 1971 | 34 |
| 1972 | 27 |
| 1973 | 27 |
| 1974 | 50 |
| 1975 | 20 |
| 1976 | 53 |
| 1977 | 29 |
| 1979 | 4 |
| 1980 | 37 |
| 1981 | 54 |
| 1982 | 24 |
| 1983 | 54 |
| 1984 | 28 |
| 1985 | 72 |
| 1986 | 59 |
| 1987 | 41 |
| 1988 | 21 |
| 1989 | 39 |
| 1990 | 46 |
| 1991 | 38 |
| 1992 | 33 |
| 1993 | 59 |
| 1994 | 43 |
| 1995 | 33 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1991-02-16 | Record snow depth | Record snow depth 35.0 cm (13.8 in) |
| 1992-08-08 | Record high minimum temperature | Record high minimum temperature 23.8 C (74.8 F) |
| 1992-08-09 | Record high maximum temperature | Record high maximum temperature 36.5 C (97.7 F) |
Wettest Day of Each Month
Aug: 84.5 mm (3.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 28.6 mm (1.1 in) | 22 January 1995 |
| Feb | 23.1 mm (0.9 in) | 6 February 1984 |
| Mar | 23.1 mm (0.9 in) | 26 March 1963 |
| Apr | 28.8 mm (1.1 in) | 27 April 1981 |
| May | 34.8 mm (1.4 in) | 29 May 1980 |
| Jun | 54.2 mm (2.1 in) | 15 June 1968 |
| Jul | 52.0 mm (2.0 in) | 31 July 1967 |
| Aug | 84.5 mm (3.3 in) | 9 August 1981 |
| Sep | 58.9 mm (2.3 in) | 30 September 1990 |
| Oct | 52.8 mm (2.1 in) | 7 October 1982 |
| Nov | 38.3 mm (1.5 in) | 14 November 1964 |
| Dec | 38.3 mm (1.5 in) | 20 December 1993 |
Period of Record Coverage
1957 to 1995| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1957 | 61 | 17% | No |
| 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 | 304 | 83% | No |
| 1979 | 31 | 8% | No |
| 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 | 304 | 83% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 October 1995 | Offenbach/M. (Stadt), DE | daily high min | 11.0 C (51.8 F) | 1.2 C (2.2 F) | 24 years | 13 of 100 (Routine) |
| 28 October 1995 | Offenbach/M. (Stadt), DE | daily high min | 13.2 C (55.8 F) | 1.2 C (2.2 F) | 6 years | 8 of 100 (Routine) |
| 16 October 1995 | Offenbach/M. (Stadt), DE | daily high min | 14.2 C (57.6 F) | 0.3 C (0.5 F) | 6 years | 5 of 100 (Routine) |
| 13 October 1995 | Offenbach/M. (Stadt), DE | daily high min | 15.0 C (59.0 F) | 1.4 C (2.5 F) | 26 years | 14 of 100 (Routine) |
| 12 October 1995 | Offenbach/M. (Stadt), DE | daily high min (Tie) | 15.0 C (59.0 F) | tie | 26 years | 2 of 100 (Routine) |
| 10 October 1995 | Offenbach/M. (Stadt), DE | daily high max | 24.5 C (76.1 F) | 1.9 C (3.4 F) | 18 years | 12 of 100 (Routine) |
| 9 October 1995 | Offenbach/M. (Stadt), DE | daily high max | 24.8 C (76.6 F) | 0.5 C (0.9 F) | 18 years | 9 of 100 (Routine) |
| 8 October 1995 | Offenbach/M. (Stadt), DE | daily high max | 23.5 C (74.3 F) | 2.5 C (4.5 F) | 32 years | 18 of 100 (Routine) |
| 4 October 1995 | Offenbach/M. (Stadt), DE | daily high min | 14.8 C (58.6 F) | 1.7 C (3.1 F) | 28 years | 15 of 100 (Routine) |
| 30 September 1995 | Offenbach/M. (Stadt), DE | monthly low max (Tie) | 11.6 C (52.9 F) | tie | 21 years | 4 of 100 (Routine) |
| 27 September 1995 | Offenbach/M. (Stadt), DE | daily rain | 18.0 mm (0.7 in) | 7.8 mm (0.31 in) | 26 years | 20 of 100 (Routine) |
| 19 September 1995 | Offenbach/M. (Stadt), DE | daily rain | 15.0 mm (0.6 in) | 7.2 mm (0.28 in) | 28 years | 20 of 100 (Routine) |
| 13 September 1995 | Offenbach/M. (Stadt), DE | daily rain | 12.0 mm (0.5 in) | 1.9 mm (0.07 in) | 20 years | 12 of 100 (Routine) |
| 3 September 1995 | Offenbach/M. (Stadt), DE | daily low max | 15.6 C (60.1 F) | 0.4 C (0.7 F) | 6 years | 6 of 100 (Routine) |
| 20 August 1995 | Offenbach/M. (Stadt), DE | daily high min | 19.0 C (66.2 F) | 0.4 C (0.7 F) | 21 years | 10 of 100 (Routine) |
| 19 August 1995 | Offenbach/M. (Stadt), DE | daily high min | 19.0 C (66.2 F) | 1.6 C (2.9 F) | 21 years | 14 of 100 (Routine) |
| 14 August 1995 | Offenbach/M. (Stadt), DE | daily high min | 19.0 C (66.2 F) | 0.2 C (0.4 F) | 4 years | 4 of 100 (Routine) |
| 13 August 1995 | Offenbach/M. (Stadt), DE | daily high min (Tie) | 19.0 C (66.2 F) | tie | 6 years | 1 of 100 (Routine) |
| 7 August 1995 | Offenbach/M. (Stadt), DE | daily high min | 19.4 C (66.9 F) | 0.2 C (0.4 F) | 24 years | 10 of 100 (Routine) |
| 6 August 1995 | Offenbach/M. (Stadt), DE | daily high max | 33.2 C (91.8 F) | 0.7 C (1.3 F) | 4 years | 5 of 100 (Routine) |
Climate Trend
34 complete years, 1958 to 1994| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1958 | 10.1 C | -0.38 C |
| 1959 | 10.9 C | +0.46 C |
| 1960 | 10.3 C | -0.14 C |
| 1961 | 10.6 C | +0.15 C |
| 1962 | 9.0 C | -1.48 C |
| 1963 | 8.8 C | -1.62 C |
| 1964 | 10.1 C | -0.34 C |
| 1965 | 9.6 C | -0.91 C |
| 1966 | 10.7 C | +0.27 C |
| 1967 | 10.8 C | +0.36 C |
| 1968 | 10.1 C | -0.39 C |
| 1969 | 9.9 C | -0.57 C |
| 1970 | 10.0 C | -0.51 C |
| 1971 | 10.5 C | +0.02 C |
| 1972 | 9.9 C | -0.53 C |
| 1973 | 10.5 C | +0.00 C |
| 1974 | 10.9 C | +0.46 C |
| 1975 | 11.0 C | +0.54 C |
| 1976 | 10.9 C | +0.48 C |
| 1980 | 9.8 C | -0.64 C |
| 1981 | 10.3 C | -0.16 C |
| 1982 | 11.1 C | +0.62 C |
| 1983 | 11.1 C | +0.65 C |
| 1984 | 10.2 C | -0.30 C |
| 1985 | 9.5 C | -0.95 C |
| 1986 | 10.1 C | -0.35 C |
| 1987 | 9.5 C | -0.92 C |
| 1988 | 11.2 C | +0.78 C |
| 1989 | 11.5 C | +1.05 C |
| 1990 | 11.7 C | +1.21 C |
| 1991 | 10.6 C | +0.15 C |
| 1992 | 11.5 C | +1.04 C |
| 1993 | 10.9 C | +0.43 C |
| 1994 | 12.0 C | +1.49 C |
The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1958 to 1994. In Fahrenheit: 0.6 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.1 to 0.5) per decade | 0.6 F (0.2 to 0.9) per decade | 1958 to 1994 | 34 | Rise |
| Mean daily maximum | 0.21 C (-0.03 to 0.44) per decade | 0.4 F (-0.1 to 0.8) per decade | 1958 to 1994 | 34 | Not clearly different from zero |
| Mean daily minimum | 0.4 C (0.2 to 0.6) per decade | 0.8 F (0.4 to 1.1) per decade | 1958 to 1994 | 34 | 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
1957 to 1995| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.5 C (97.7 F) | 1992 | 33.5 C (92.2 F) | 38 |
| Coldest night (TNn) | -18.2 C (-0.8 F) | 1968 | -10.7 C (12.7 F) | 38 |
| Wettest day (Rx1day) | 84.5 mm (3.3 in) | 1981 | 29.4 mm (1.2 in) | 38 |
| Wettest five days (Rx5day) | 155.6 mm (6.1 in) | 1981 | 54.4 mm (2.1 in) | 38 |
| Longest dry spell (CDD) | 41 days | 1991 | 21 days | 38 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1957 | 16.6 C (61.9 F) |
| 1958 | 30.2 C (86.4 F) |
| 1959 | 36.4 C (97.5 F) |
| 1960 | 30.6 C (87.1 F) |
| 1961 | 32.7 C (90.9 F) |
| 1962 | 33.7 C (92.7 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 35.2 C (95.4 F) |
| 1965 | 31.2 C (88.2 F) |
| 1966 | 34.0 C (93.2 F) |
| 1967 | 33.5 C (92.3 F) |
| 1968 | 31.9 C (89.4 F) |
| 1969 | 34.0 C (93.2 F) |
| 1970 | 31.7 C (89.1 F) |
| 1971 | 35.6 C (96.1 F) |
| 1972 | 33.2 C (91.8 F) |
| 1973 | 32.9 C (91.2 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 33.2 C (91.8 F) |
| 1976 | 35.9 C (96.6 F) |
| 1977 | 32.4 C (90.3 F) |
| 1979 | 14.0 C (57.2 F) |
| 1980 | 32.0 C (89.6 F) |
| 1981 | 31.1 C (88.0 F) |
| 1982 | 32.0 C (89.6 F) |
| 1983 | 36.0 C (96.8 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 33.0 C (91.4 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 33.0 C (91.4 F) |
| 1988 | 33.4 C (92.1 F) |
| 1989 | 34.5 C (94.1 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 34.5 C (94.1 F) |
| 1992 | 36.5 C (97.7 F) |
| 1993 | 31.4 C (88.5 F) |
| 1994 | 36.0 C (96.8 F) |
| 1995 | 35.2 C (95.4 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1957 | -5.3 C (22.5 F) |
| 1958 | -9.2 C (15.4 F) |
| 1959 | -7.6 C (18.3 F) |
| 1960 | -14.6 C (5.7 F) |
| 1961 | -12.4 C (9.7 F) |
| 1962 | -15.0 C (5.0 F) |
| 1963 | -15.4 C (4.3 F) |
| 1964 | -11.6 C (11.1 F) |
| 1965 | -8.6 C (16.5 F) |
| 1966 | -13.6 C (7.5 F) |
| 1967 | -11.2 C (11.8 F) |
| 1968 | -18.2 C (-0.8 F) |
| 1969 | -15.0 C (5.0 F) |
| 1970 | -11.8 C (10.8 F) |
| 1971 | -13.6 C (7.5 F) |
| 1972 | -11.0 C (12.2 F) |
| 1973 | -12.9 C (8.8 F) |
| 1974 | -2.2 C (28.0 F) |
| 1975 | -9.2 C (15.4 F) |
| 1976 | -13.0 C (8.6 F) |
| 1977 | -4.0 C (24.8 F) |
| 1979 | -3.0 C (26.6 F) |
| 1980 | -10.1 C (13.8 F) |
| 1981 | -10.4 C (13.3 F) |
| 1982 | -16.0 C (3.2 F) |
| 1983 | -8.4 C (16.9 F) |
| 1984 | -7.2 C (19.0 F) |
| 1985 | -15.4 C (4.3 F) |
| 1986 | -15.0 C (5.0 F) |
| 1987 | -17.0 C (1.4 F) |
| 1988 | -6.5 C (20.3 F) |
| 1989 | -7.0 C (19.4 F) |
| 1990 | -6.2 C (20.8 F) |
| 1991 | -12.0 C (10.4 F) |
| 1992 | -8.8 C (16.2 F) |
| 1993 | -10.4 C (13.3 F) |
| 1994 | -7.0 C (19.4 F) |
| 1995 | -8.3 C (17.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1957 | 11.0 mm (0.4 in) |
| 1958 | 32.3 mm (1.3 in) |
| 1959 | 23.2 mm (0.9 in) |
| 1960 | 32.8 mm (1.3 in) |
| 1961 | 46.1 mm (1.8 in) |
| 1962 | 20.0 mm (0.8 in) |
| 1963 | 27.1 mm (1.1 in) |
| 1964 | 38.3 mm (1.5 in) |
| 1965 | 41.1 mm (1.6 in) |
| 1966 | 29.3 mm (1.2 in) |
| 1967 | 52.0 mm (2.0 in) |
| 1968 | 54.2 mm (2.1 in) |
| 1969 | 27.2 mm (1.1 in) |
| 1970 | 22.4 mm (0.9 in) |
| 1971 | 38.3 mm (1.5 in) |
| 1972 | 42.3 mm (1.7 in) |
| 1973 | 24.7 mm (1.0 in) |
| 1974 | 23.7 mm (0.9 in) |
| 1975 | 28.9 mm (1.1 in) |
| 1976 | 16.6 mm (0.7 in) |
| 1977 | 27.4 mm (1.1 in) |
| 1979 | 31.9 mm (1.3 in) |
| 1980 | 34.8 mm (1.4 in) |
| 1981 | 84.5 mm (3.3 in) |
| 1982 | 52.8 mm (2.1 in) |
| 1983 | 22.1 mm (0.9 in) |
| 1984 | 29.5 mm (1.2 in) |
| 1985 | 21.6 mm (0.9 in) |
| 1986 | 37.2 mm (1.5 in) |
| 1987 | 25.7 mm (1.0 in) |
| 1988 | 31.9 mm (1.3 in) |
| 1989 | 25.7 mm (1.0 in) |
| 1990 | 58.9 mm (2.3 in) |
| 1991 | 33.1 mm (1.3 in) |
| 1992 | 23.5 mm (0.9 in) |
| 1993 | 38.3 mm (1.5 in) |
| 1994 | 19.5 mm (0.8 in) |
| 1995 | 28.6 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1957 | 18.6 mm (0.7 in) |
| 1958 | 52.5 mm (2.1 in) |
| 1959 | 42.1 mm (1.7 in) |
| 1960 | 63.0 mm (2.5 in) |
| 1961 | 95.4 mm (3.8 in) |
| 1962 | 45.5 mm (1.8 in) |
| 1963 | 60.1 mm (2.4 in) |
| 1964 | 86.0 mm (3.4 in) |
| 1965 | 106.5 mm (4.2 in) |
| 1966 | 63.7 mm (2.5 in) |
| 1967 | 63.8 mm (2.5 in) |
| 1968 | 69.7 mm (2.7 in) |
| 1969 | 52.7 mm (2.1 in) |
| 1970 | 42.2 mm (1.7 in) |
| 1971 | 53.3 mm (2.1 in) |
| 1972 | 55.1 mm (2.2 in) |
| 1973 | 42.5 mm (1.7 in) |
| 1974 | 36.2 mm (1.4 in) |
| 1975 | 44.4 mm (1.7 in) |
| 1976 | 38.1 mm (1.5 in) |
| 1977 | 60.0 mm (2.4 in) |
| 1979 | 67.1 mm (2.6 in) |
| 1980 | 52.9 mm (2.1 in) |
| 1981 | 155.6 mm (6.1 in) |
| 1982 | 90.3 mm (3.6 in) |
| 1983 | 46.8 mm (1.8 in) |
| 1984 | 54.8 mm (2.2 in) |
| 1985 | 41.0 mm (1.6 in) |
| 1986 | 56.2 mm (2.2 in) |
| 1987 | 50.2 mm (2.0 in) |
| 1988 | 54.0 mm (2.1 in) |
| 1989 | 57.2 mm (2.3 in) |
| 1990 | 67.2 mm (2.6 in) |
| 1991 | 46.8 mm (1.8 in) |
| 1992 | 44.5 mm (1.8 in) |
| 1993 | 78.2 mm (3.1 in) |
| 1994 | 36.9 mm (1.5 in) |
| 1995 | 57.6 mm (2.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1957 | 19 days |
| 1958 | 25 days |
| 1959 | 37 days |
| 1960 | 26 days |
| 1961 | 17 days |
| 1962 | 36 days |
| 1963 | 30 days |
| 1964 | 14 days |
| 1965 | 15 days |
| 1966 | 15 days |
| 1967 | 17 days |
| 1968 | 23 days |
| 1969 | 36 days |
| 1970 | 14 days |
| 1971 | 20 days |
| 1972 | 24 days |
| 1973 | 25 days |
| 1974 | 13 days |
| 1975 | 21 days |
| 1976 | 36 days |
| 1977 | 21 days |
| 1979 | 4 days |
| 1980 | 20 days |
| 1981 | 18 days |
| 1982 | 18 days |
| 1983 | 27 days |
| 1984 | 21 days |
| 1985 | 23 days |
| 1986 | 32 days |
| 1987 | 21 days |
| 1988 | 17 days |
| 1989 | 19 days |
| 1990 | 35 days |
| 1991 | 41 days |
| 1992 | 15 days |
| 1993 | 17 days |
| 1994 | 17 days |
| 1995 | 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
34 years with a frostAcross 34 years with a frost, the median last spring frost at Offenbach/M. (Stadt) falls on 8 April and the median first autumn frost on 31 October, which leaves a median of 206 days between them.
Fitted over all years, the growing season changes by +6.1 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1962 to 1994) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 8 April | n/a | 7 April | n/a | -3.5 days per decade |
| First autumn frost | 31 October | n/a | 31 October | n/a | +2.5 days per decade |
| Growing days | 206 days | n/a | 208 days | n/a | +6.1 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
34 years, 1958 to 1994A day with at least 30.5 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 89.5 mm (3.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.5 mm (1.2 in) | |
| 5 years | 42.2 mm (1.7 in) | |
| 10 years | 51.3 mm (2.0 in) | |
| 25 years | 64.8 mm (2.6 in) | |
| 50 years | 76.4 mm (3.0 in) | Longer than the 34 years of record |
| 100 years | 89.5 mm (3.5 in) | Longer than the 34 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, 34 years of values from 1958 to 1994.
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: 84.5 mm (3.3 in) in 1981; 58.9 mm (2.3 in) in 1990; 54.2 mm (2.1 in) in 1968.
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).