Dunbar Forest Exp STN Weather Records (USC00202298)
Record envelope, standing records and threshold days for Dunbar Forest Exp STN (USC00202298), Michigan, United States, with 49 years of record.
Key Facts for Dunbar Forest Exp STN
- Dunbar Forest Exp STN (USC00202298) is a weather station in Michigan, United States at 46.32 latitude and -84.23 longitude, 183 m (600 ft) above sea level.
- The station reports from 1942 to 1990, 49 years of record.
- 1,464 records set at Dunbar Forest Exp STN still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dunbar Forest Exp STN tied a daily record high minimum temperature of 17.8 C (64.0 F) on 25 August 1990.
About the Station
- Location: Michigan, United States, 46.32 latitude, -84.23 longitude.
- Elevation: 183 m (600 ft).
- Period of record: 1942 to 1990, 49 years.
- Eligible elements: tmax, tmin, prcp, snow, 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 | 8.9 C (48.0 F) | -38.3 C (-36.9 F) | n/a | n/a |
| Feb | 12.2 C (54.0 F) | -39.4 C (-38.9 F) | n/a | n/a |
| Mar | 23.9 C (75.0 F) | -37.2 C (-35.0 F) | n/a | n/a |
| Apr | 29.4 C (84.9 F) | -20.6 C (-5.1 F) | n/a | n/a |
| May | 31.7 C (89.1 F) | -7.2 C (19.0 F) | n/a | n/a |
| Jun | 32.8 C (91.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Jul | 36.7 C (98.1 F) | 2.8 C (37.0 F) | n/a | n/a |
| Aug | 35.0 C (95.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Sep | 33.9 C (93.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Oct | 26.7 C (80.1 F) | -7.8 C (18.0 F) | n/a | n/a |
| Nov | 19.4 C (66.9 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Dec | 15.0 C (59.0 F) | -34.4 C (-29.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1942 | 39 |
| 1943 | 36 |
| 1944 | 25 |
| 1945 | 44 |
| 1946 | 34 |
| 1947 | 49 |
| 1948 | 13 |
| 1949 | 29 |
| 1950 | 39 |
| 1951 | 32 |
| 1952 | 21 |
| 1953 | 30 |
| 1954 | 20 |
| 1955 | 30 |
| 1956 | 33 |
| 1957 | 20 |
| 1958 | 33 |
| 1959 | 35 |
| 1960 | 15 |
| 1961 | 19 |
| 1962 | 26 |
| 1963 | 38 |
| 1964 | 46 |
| 1965 | 29 |
| 1966 | 29 |
| 1967 | 31 |
| 1968 | 35 |
| 1969 | 21 |
| 1970 | 16 |
| 1971 | 18 |
| 1972 | 22 |
| 1973 | 27 |
| 1974 | 22 |
| 1975 | 24 |
| 1976 | 35 |
| 1977 | 26 |
| 1978 | 23 |
| 1979 | 25 |
| 1980 | 26 |
| 1981 | 28 |
| 1982 | 48 |
| 1983 | 50 |
| 1984 | 38 |
| 1985 | 26 |
| 1986 | 28 |
| 1987 | 33 |
| 1988 | 37 |
| 1989 | 45 |
| 1990 | 16 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1976-01-23 | Record low maximum temperature | Record low maximum temperature -20.6 C (-5.1 F) |
| 1977-01-09 | Record low minimum temperature | Record low minimum temperature -37.8 C (-36.0 F) |
| 1979-02-17 | Record low minimum temperature | Record low minimum temperature -39.4 C (-38.9 F) |
| 1981-01-03 | Record low maximum temperature | Record low maximum temperature -24.4 C (-11.9 F) |
| 1988-07-07 | Record high maximum temperature | Record high maximum temperature 36.1 C (97.0 F) |
| 1988-07-08 | Record high maximum temperature | Record high maximum temperature 36.7 C (98.1 F) |
Wettest Day of Each Month
Jun: 94.2 mm (3.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 23.6 mm (0.9 in) | 19 January 1949 |
| Feb | 26.2 mm (1.0 in) | 6 February 1953 |
| Mar | 53.1 mm (2.1 in) | 29 March 1947 |
| Apr | 47.0 mm (1.9 in) | 8 April 1980 |
| May | 82.6 mm (3.3 in) | 31 May 1970 |
| Jun | 94.2 mm (3.7 in) | 23 June 1961 |
| Jul | 66.8 mm (2.6 in) | 25 July 1979 |
| Aug | 68.8 mm (2.7 in) | 7 August 1979 |
| Sep | 92.7 mm (3.6 in) | 25 September 1984 |
| Oct | 48.3 mm (1.9 in) | 23 October 1979 |
| Nov | 51.8 mm (2.0 in) | 28 November 1964 |
| Dec | 35.6 mm (1.4 in) | 4 December 1961 |
Period of Record Coverage
1942 to 1990| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1942 | 361 | 99% | Yes |
| 1943 | 361 | 99% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 351 | 96% | Yes |
| 1947 | 300 | 82% | No |
| 1948 | 245 | 67% | No |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 362 | 99% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 363 | 99% | 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 | 364 | 99% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 362 | 99% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 359 | 98% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 357 | 98% | Yes |
| 1986 | 362 | 99% | Yes |
| 1987 | 356 | 98% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 234 | 64% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 August 1990 | Dunbar Forest Exp STN, US | daily high min (Tie) | 17.8 C (64.0 F) | tie | 41 years | 4 of 100 (Routine) |
| 19 May 1990 | Dunbar Forest Exp STN, US | daily low max | 6.1 C (43.0 F) | 1.7 C (3.1 F) | 3 years | 7 of 100 (Routine) |
| 17 May 1990 | Dunbar Forest Exp STN, US | daily rain | 18.3 mm (0.7 in) | 10.2 mm (0.4 in) | 20 years | 20 of 100 (Routine) |
| 11 May 1990 | Dunbar Forest Exp STN, US | monthly snowfall | 14.0 cm (5.5 in) | 7.6 cm (3.0 in) | 6 years | 30 of 100 (Routine) |
| 11 May 1990 | Dunbar Forest Exp STN, US | monthly snow depth | 12.7 cm (5.0 in) | 7.6 cm (3.0 in) | 6 years | 22 of 100 (Routine) |
| 10 May 1990 | Dunbar Forest Exp STN, US | daily rain | 22.4 mm (0.9 in) | 0.6 mm (0.02 in) | 29 years | 12 of 100 (Routine) |
| 2 May 1990 | Dunbar Forest Exp STN, US | daily snowfall | 0.5 cm (0.2 in) | 0.5 cm (0.2 in) | 47 years | 19 of 100 (Routine) |
| 28 April 1990 | Dunbar Forest Exp STN, US | daily high max | 28.9 C (84.0 F) | 3.9 C (7.0 F) | 37 years | 21 of 100 (Routine) |
| 28 April 1990 | Dunbar Forest Exp STN, US | monthly high min (Tie) | 11.1 C (52.0 F) | tie | 0 years | 3 of 100 (Routine) |
| 27 April 1990 | Dunbar Forest Exp STN, US | monthly high min | 11.1 C (52.0 F) | 1.1 C (2.0 F) | 17 years | 21 of 100 (Routine) |
| 27 April 1990 | Dunbar Forest Exp STN, US | daily high max | 28.3 C (82.9 F) | 0.5 C (0.9 F) | 48 years | 18 of 100 (Routine) |
| 26 April 1990 | Dunbar Forest Exp STN, US | daily high max | 28.9 C (84.0 F) | 3.9 C (7.0 F) | 48 years | 24 of 100 (Routine) |
| 26 April 1990 | Dunbar Forest Exp STN, US | daily high min (Tie) | 8.3 C (46.9 F) | tie | 4 years | 1 of 100 (Routine) |
| 18 April 1990 | Dunbar Forest Exp STN, US | daily low max (Tie) | 0.0 C (32.0 F) | tie | 7 years | 1 of 100 (Routine) |
| 18 April 1990 | Dunbar Forest Exp STN, US | daily low min (Tie) | -9.4 C (15.1 F) | tie | 7 years | 1 of 100 (Routine) |
| 17 April 1990 | Dunbar Forest Exp STN, US | daily snowfall | 10.2 cm (4.0 in) | 5.6 cm (2.2 in) | 36 years | 28 of 100 (Routine) |
| 10 April 1990 | Dunbar Forest Exp STN, US | daily snowfall (Tie) | 3.8 cm (1.5 in) | tie | 37 years | 3 of 100 (Routine) |
| 27 March 1990 | Dunbar Forest Exp STN, US | daily low max | -5.6 C (21.9 F) | 1.2 C (2.2 F) | 11 years | 9 of 100 (Routine) |
| 17 March 1990 | Dunbar Forest Exp STN, US | daily high min | 2.2 C (36.0 F) | 0.5 C (0.9 F) | 44 years | 17 of 100 (Routine) |
| 16 March 1990 | Dunbar Forest Exp STN, US | daily high max | 11.1 C (52.0 F) | 1.7 C (3.1 F) | 44 years | 20 of 100 (Routine) |
Climate Trend
45 complete years, 1942 to 1989| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1942 | 5.1 C | +0.36 C |
| 1943 | 3.8 C | -0.91 C |
| 1944 | 5.2 C | +0.48 C |
| 1945 | 4.2 C | -0.48 C |
| 1949 | 5.8 C | +1.05 C |
| 1950 | 3.5 C | -1.18 C |
| 1951 | 4.6 C | -0.11 C |
| 1952 | 5.7 C | +0.97 C |
| 1953 | 6.3 C | +1.62 C |
| 1954 | 4.8 C | +0.09 C |
| 1955 | 5.7 C | +1.01 C |
| 1956 | 4.2 C | -0.46 C |
| 1957 | 5.0 C | +0.32 C |
| 1958 | 4.8 C | +0.11 C |
| 1959 | 5.3 C | +0.61 C |
| 1960 | 5.4 C | +0.65 C |
| 1961 | 5.7 C | +1.01 C |
| 1962 | 4.9 C | +0.22 C |
| 1963 | 4.4 C | -0.26 C |
| 1964 | 4.9 C | +0.23 C |
| 1965 | 4.1 C | -0.57 C |
| 1966 | 4.8 C | +0.05 C |
| 1967 | 4.1 C | -0.63 C |
| 1968 | 4.8 C | +0.08 C |
| 1969 | 4.6 C | -0.08 C |
| 1970 | 4.5 C | -0.25 C |
| 1971 | 4.6 C | -0.06 C |
| 1972 | 3.4 C | -1.33 C |
| 1973 | 5.7 C | +1.02 C |
| 1974 | 4.4 C | -0.31 C |
| 1975 | 5.4 C | +0.70 C |
| 1976 | 4.1 C | -0.56 C |
| 1977 | 4.9 C | +0.16 C |
| 1978 | 4.0 C | -0.72 C |
| 1979 | 4.0 C | -0.72 C |
| 1980 | 4.1 C | -0.63 C |
| 1981 | 4.8 C | +0.11 C |
| 1982 | 3.8 C | -0.90 C |
| 1983 | 5.2 C | +0.52 C |
| 1984 | 4.7 C | +0.04 C |
| 1985 | 3.7 C | -0.97 C |
| 1986 | 4.5 C | -0.17 C |
| 1987 | 6.1 C | +1.38 C |
| 1988 | 4.6 C | -0.15 C |
| 1989 | 3.2 C | -1.48 C |
The fitted trend in annual mean temperature here over 1942 to 1989 is -0.13 C (-0.29 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.24 F (-0.52 to 0.05) per decade. The slope is a straight line fitted to 45 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 (-0.29 to 0.03) per decade | -0.24 F (-0.52 to 0.05) per decade | 1942 to 1989 | 45 | Not clearly different from zero |
| Mean daily maximum | -0.10 C (-0.26 to 0.05) per decade | -0.2 F (-0.5 to 0.1) per decade | 1942 to 1989 | 45 | Not clearly different from zero |
| Mean daily minimum | -0.16 C (-0.35 to 0.03) per decade | -0.29 F (-0.63 to 0.05) per decade | 1942 to 1989 | 45 | 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
1942 to 1990| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.7 C (98.1 F) | 1988 | 31.7 C (89.1 F) | 49 |
| Coldest night (TNn) | -39.4 C (-38.9 F) | 1979 | -32.2 C (-26.0 F) | 49 |
| Wettest day (Rx1day) | 94.2 mm (3.7 in) | 1961 | 44.7 mm (1.8 in) | 49 |
| Wettest five days (Rx5day) | 120.1 mm (4.7 in) | 1943 | 72.1 mm (2.8 in) | 49 |
| Longest dry spell (CDD) | 24 days | 1945 | 18 days | 49 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1942 | 31.7 C (89.1 F) |
| 1943 | 31.7 C (89.1 F) |
| 1944 | 32.8 C (91.0 F) |
| 1945 | 31.1 C (88.0 F) |
| 1946 | 30.0 C (86.0 F) |
| 1947 | 35.0 C (95.0 F) |
| 1948 | 32.8 C (91.0 F) |
| 1949 | 32.8 C (91.0 F) |
| 1950 | 29.4 C (84.9 F) |
| 1951 | 30.6 C (87.1 F) |
| 1952 | 30.6 C (87.1 F) |
| 1953 | 33.9 C (93.0 F) |
| 1954 | 30.0 C (86.0 F) |
| 1955 | 34.4 C (93.9 F) |
| 1956 | 32.2 C (90.0 F) |
| 1957 | 30.6 C (87.1 F) |
| 1958 | 28.9 C (84.0 F) |
| 1959 | 31.7 C (89.1 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 31.7 C (89.1 F) |
| 1962 | 31.7 C (89.1 F) |
| 1963 | 32.8 C (91.0 F) |
| 1964 | 31.7 C (89.1 F) |
| 1965 | 29.4 C (84.9 F) |
| 1966 | 33.3 C (91.9 F) |
| 1967 | 30.0 C (86.0 F) |
| 1968 | 31.7 C (89.1 F) |
| 1969 | 30.6 C (87.1 F) |
| 1970 | 30.0 C (86.0 F) |
| 1971 | 31.1 C (88.0 F) |
| 1972 | 29.4 C (84.9 F) |
| 1973 | 30.6 C (87.1 F) |
| 1974 | 30.0 C (86.0 F) |
| 1975 | 32.8 C (91.0 F) |
| 1976 | 31.7 C (89.1 F) |
| 1977 | 32.2 C (90.0 F) |
| 1978 | 30.0 C (86.0 F) |
| 1979 | 30.0 C (86.0 F) |
| 1980 | 30.0 C (86.0 F) |
| 1981 | 32.8 C (91.0 F) |
| 1982 | 32.2 C (90.0 F) |
| 1983 | 33.3 C (91.9 F) |
| 1984 | 30.6 C (87.1 F) |
| 1985 | 30.0 C (86.0 F) |
| 1986 | 31.7 C (89.1 F) |
| 1987 | 31.7 C (89.1 F) |
| 1988 | 36.7 C (98.1 F) |
| 1989 | 31.7 C (89.1 F) |
| 1990 | 28.9 C (84.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1942 | -34.4 C (-29.9 F) |
| 1943 | -37.2 C (-35.0 F) |
| 1944 | -28.3 C (-18.9 F) |
| 1945 | -32.2 C (-26.0 F) |
| 1946 | -33.9 C (-29.0 F) |
| 1947 | -27.2 C (-17.0 F) |
| 1948 | -25.0 C (-13.0 F) |
| 1949 | -28.9 C (-20.0 F) |
| 1950 | -34.4 C (-29.9 F) |
| 1951 | -36.1 C (-33.0 F) |
| 1952 | -30.6 C (-23.1 F) |
| 1953 | -28.3 C (-18.9 F) |
| 1954 | -31.1 C (-24.0 F) |
| 1955 | -29.4 C (-20.9 F) |
| 1956 | -26.7 C (-16.1 F) |
| 1957 | -32.2 C (-26.0 F) |
| 1958 | -32.2 C (-26.0 F) |
| 1959 | -32.8 C (-27.0 F) |
| 1960 | -26.7 C (-16.1 F) |
| 1961 | -30.6 C (-23.1 F) |
| 1962 | -34.4 C (-29.9 F) |
| 1963 | -32.8 C (-27.0 F) |
| 1964 | -31.1 C (-24.0 F) |
| 1965 | -33.9 C (-29.0 F) |
| 1966 | -32.2 C (-26.0 F) |
| 1967 | -33.9 C (-29.0 F) |
| 1968 | -33.3 C (-27.9 F) |
| 1969 | -26.7 C (-16.1 F) |
| 1970 | -34.4 C (-29.9 F) |
| 1971 | -35.0 C (-31.0 F) |
| 1972 | -37.2 C (-35.0 F) |
| 1973 | -30.0 C (-22.0 F) |
| 1974 | -35.0 C (-31.0 F) |
| 1975 | -31.1 C (-24.0 F) |
| 1976 | -34.4 C (-29.9 F) |
| 1977 | -37.8 C (-36.0 F) |
| 1978 | -30.6 C (-23.1 F) |
| 1979 | -39.4 C (-38.9 F) |
| 1980 | -31.7 C (-25.1 F) |
| 1981 | -38.3 C (-36.9 F) |
| 1982 | -38.3 C (-36.9 F) |
| 1983 | -27.8 C (-18.0 F) |
| 1984 | -36.7 C (-34.1 F) |
| 1985 | -32.8 C (-27.0 F) |
| 1986 | -36.1 C (-33.0 F) |
| 1987 | -32.2 C (-26.0 F) |
| 1988 | -28.9 C (-20.0 F) |
| 1989 | -31.7 C (-25.1 F) |
| 1990 | -31.1 C (-24.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1942 | 35.6 mm (1.4 in) |
| 1943 | 75.4 mm (3.0 in) |
| 1944 | 36.3 mm (1.4 in) |
| 1945 | 61.7 mm (2.4 in) |
| 1946 | 63.2 mm (2.5 in) |
| 1947 | 53.1 mm (2.1 in) |
| 1948 | 44.7 mm (1.8 in) |
| 1949 | 30.7 mm (1.2 in) |
| 1950 | 26.7 mm (1.1 in) |
| 1951 | 41.1 mm (1.6 in) |
| 1952 | 45.5 mm (1.8 in) |
| 1953 | 30.0 mm (1.2 in) |
| 1954 | 37.8 mm (1.5 in) |
| 1955 | 28.7 mm (1.1 in) |
| 1956 | 58.2 mm (2.3 in) |
| 1957 | 40.6 mm (1.6 in) |
| 1958 | 38.4 mm (1.5 in) |
| 1959 | 51.1 mm (2.0 in) |
| 1960 | 54.9 mm (2.2 in) |
| 1961 | 94.2 mm (3.7 in) |
| 1962 | 44.2 mm (1.7 in) |
| 1963 | 39.6 mm (1.6 in) |
| 1964 | 51.8 mm (2.0 in) |
| 1965 | 54.1 mm (2.1 in) |
| 1966 | 26.7 mm (1.1 in) |
| 1967 | 53.3 mm (2.1 in) |
| 1968 | 59.9 mm (2.4 in) |
| 1969 | 54.4 mm (2.1 in) |
| 1970 | 82.6 mm (3.3 in) |
| 1971 | 40.9 mm (1.6 in) |
| 1972 | 29.5 mm (1.2 in) |
| 1973 | 47.8 mm (1.9 in) |
| 1974 | 33.5 mm (1.3 in) |
| 1975 | 49.5 mm (1.9 in) |
| 1976 | 30.2 mm (1.2 in) |
| 1977 | 45.2 mm (1.8 in) |
| 1978 | 50.8 mm (2.0 in) |
| 1979 | 71.6 mm (2.8 in) |
| 1980 | 47.0 mm (1.9 in) |
| 1981 | 51.3 mm (2.0 in) |
| 1982 | 24.9 mm (1.0 in) |
| 1983 | 27.2 mm (1.1 in) |
| 1984 | 92.7 mm (3.6 in) |
| 1985 | 36.3 mm (1.4 in) |
| 1986 | 57.7 mm (2.3 in) |
| 1987 | 41.1 mm (1.6 in) |
| 1988 | 39.4 mm (1.6 in) |
| 1989 | 28.7 mm (1.1 in) |
| 1990 | 22.4 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1942 | 70.2 mm (2.8 in) |
| 1943 | 120.1 mm (4.7 in) |
| 1944 | 65.5 mm (2.6 in) |
| 1945 | 77.7 mm (3.1 in) |
| 1946 | 72.6 mm (2.9 in) |
| 1947 | 56.4 mm (2.2 in) |
| 1948 | 75.5 mm (3.0 in) |
| 1949 | 76.9 mm (3.0 in) |
| 1950 | 50.1 mm (2.0 in) |
| 1951 | 57.3 mm (2.3 in) |
| 1952 | 55.4 mm (2.2 in) |
| 1953 | 53.6 mm (2.1 in) |
| 1954 | 79.2 mm (3.1 in) |
| 1955 | 60.7 mm (2.4 in) |
| 1956 | 63.8 mm (2.5 in) |
| 1957 | 75.4 mm (3.0 in) |
| 1958 | 46.8 mm (1.8 in) |
| 1959 | 84.6 mm (3.3 in) |
| 1960 | 103.3 mm (4.1 in) |
| 1961 | 120.0 mm (4.7 in) |
| 1962 | 71.6 mm (2.8 in) |
| 1963 | 70.6 mm (2.8 in) |
| 1964 | 57.9 mm (2.3 in) |
| 1965 | 111.1 mm (4.4 in) |
| 1966 | 72.0 mm (2.8 in) |
| 1967 | 72.1 mm (2.8 in) |
| 1968 | 74.6 mm (2.9 in) |
| 1969 | 73.9 mm (2.9 in) |
| 1970 | 105.9 mm (4.2 in) |
| 1971 | 45.2 mm (1.8 in) |
| 1972 | 63.3 mm (2.5 in) |
| 1973 | 72.9 mm (2.9 in) |
| 1974 | 51.7 mm (2.0 in) |
| 1975 | 100.3 mm (3.9 in) |
| 1976 | 41.1 mm (1.6 in) |
| 1977 | 73.1 mm (2.9 in) |
| 1978 | 84.5 mm (3.3 in) |
| 1979 | 97.0 mm (3.8 in) |
| 1980 | 75.2 mm (3.0 in) |
| 1981 | 91.4 mm (3.6 in) |
| 1982 | 68.1 mm (2.7 in) |
| 1983 | 53.1 mm (2.1 in) |
| 1984 | 103.6 mm (4.1 in) |
| 1985 | 48.5 mm (1.9 in) |
| 1986 | 76.4 mm (3.0 in) |
| 1987 | 49.1 mm (1.9 in) |
| 1988 | 78.3 mm (3.1 in) |
| 1989 | 37.4 mm (1.5 in) |
| 1990 | 59.8 mm (2.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1942 | 16 days |
| 1943 | 19 days |
| 1944 | 21 days |
| 1945 | 24 days |
| 1946 | 18 days |
| 1947 | 17 days |
| 1948 | 14 days |
| 1949 | 21 days |
| 1950 | 13 days |
| 1951 | 18 days |
| 1952 | 13 days |
| 1953 | 24 days |
| 1954 | 12 days |
| 1955 | 14 days |
| 1956 | 14 days |
| 1957 | 19 days |
| 1958 | 19 days |
| 1959 | 19 days |
| 1960 | 19 days |
| 1961 | 18 days |
| 1962 | 18 days |
| 1963 | 24 days |
| 1964 | 14 days |
| 1965 | 23 days |
| 1966 | 14 days |
| 1967 | 16 days |
| 1968 | 18 days |
| 1969 | 23 days |
| 1970 | 15 days |
| 1971 | 14 days |
| 1972 | 17 days |
| 1973 | 16 days |
| 1974 | 13 days |
| 1975 | 19 days |
| 1976 | 14 days |
| 1977 | 19 days |
| 1978 | 23 days |
| 1979 | 13 days |
| 1980 | 19 days |
| 1981 | 18 days |
| 1982 | 15 days |
| 1983 | 21 days |
| 1984 | 22 days |
| 1985 | 11 days |
| 1986 | 16 days |
| 1987 | 22 days |
| 1988 | 17 days |
| 1989 | 18 days |
| 1990 | 15 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
45 years with a frostAcross 45 years with a frost, the median last spring frost at Dunbar Forest Exp STN falls on 28 May and the median first autumn frost on 27 September, which leaves a median of 121 days between them.
Fitted over all years, the growing season changes by -1.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1960 to 1989) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 28 May | n/a | 30 May | n/a | +2.0 days per decade |
| First autumn frost | 27 September | n/a | 27 September | n/a | +0.8 days per decade |
| Growing days | 121 days | n/a | 122 days | n/a | -1.2 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
46 years, 1942 to 1989A day with at least 43.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 104.6 mm (4.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 43.7 mm (1.7 in) | |
| 5 years | 58.7 mm (2.3 in) | |
| 10 years | 69.1 mm (2.7 in) | |
| 25 years | 82.9 mm (3.3 in) | |
| 50 years | 93.6 mm (3.7 in) | Longer than the 46 years of record |
| 100 years | 104.6 mm (4.1 in) | Longer than the 46 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, 46 years of values from 1942 to 1989.
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: 94.2 mm (3.7 in) in 1961; 92.7 mm (3.6 in) in 1984; 82.6 mm (3.3 in) in 1970.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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 (2025-12-31).