Calhoun Exp STN Threshold Days by Year (USC00091474)
17 fixed thresholds counted per year at Calhoun Exp STN (USC00091474): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Calhoun Exp STN Thresholds
- Calhoun Exp STN: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1954 with 125.
- Calhoun Exp STN: days with a maximum temperature at or above 90 F (32.2 C) in 43 years, most in 1954 with 101.
- Calhoun Exp STN: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 1968 with 105.
- Calhoun Exp STN: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1989 with 59.
- 17 fixed thresholds have at least one qualifying day at Calhoun Exp STN.
Days at or above 30 C (86 F)
43 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1954 | 125 | 111 |
| 1955 | 107 | 111 |
| 1956 | 106 | 111 |
| 1957 | 108 | 111 |
| 1958 | 113 | 111 |
| 1959 | 107 | 111 |
| 1960 | 110 | 97.3 |
| 1961 | 82 | 97.3 |
| 1962 | 124 | 97.3 |
| 1963 | 97 | 97.3 |
| 1964 | 114 | 97.3 |
| 1965 | 115 | 97.3 |
| 1966 | 88 | 97.3 |
| 1967 | 58 | 97.3 |
| 1968 | 90 | 97.3 |
| 1969 | 95 | 97.3 |
| 1970 | 116 | 88.8 |
| 1971 | 82 | 88.8 |
| 1972 | 87 | 88.8 |
| 1973 | 101 | 88.8 |
| 1974 | 72 | 88.8 |
| 1975 | 88 | 88.8 |
| 1976 | 73 | 88.8 |
| 1977 | 115 | 88.8 |
| 1978 | 101 | 88.8 |
| 1979 | 53 | 88.8 |
| 1980 | 107 | 89.2 |
| 1981 | 87 | 89.2 |
| 1982 | 86 | 89.2 |
| 1983 | 76 | 89.2 |
| 1984 | 78 | 89.2 |
| 1985 | 74 | 89.2 |
| 1986 | 103 | 89.2 |
| 1987 | 114 | 89.2 |
| 1988 | 94 | 89.2 |
| 1989 | 73 | 89.2 |
| 1990 | 96 | 85.9 |
| 1991 | 86 | 85.9 |
| 1992 | 59 | 85.9 |
| 1993 | 113 | 85.9 |
| 1994 | 70 | 85.9 |
| 1995 | 90 | 85.9 |
| 1996 | 87 | 85.9 |
| Year | First date | Last date |
|---|---|---|
| 1954 | 1954-04-27 | 1954-10-14 |
| 1955 | 1955-04-16 | 1955-10-01 |
| 1956 | 1956-05-12 | 1956-09-30 |
| 1957 | 1957-04-27 | 1957-09-22 |
| 1958 | 1958-05-15 | 1958-09-28 |
| 1959 | 1959-04-09 | 1959-10-06 |
| 1960 | 1960-04-23 | 1960-09-24 |
| 1961 | 1961-05-31 | 1961-09-30 |
| 1962 | 1962-04-30 | 1962-10-13 |
| 1963 | 1963-03-31 | 1963-10-25 |
| 1964 | 1964-05-17 | 1964-09-27 |
| 1965 | 1965-04-10 | 1965-10-01 |
| 1966 | 1966-05-07 | 1966-09-26 |
| 1967 | 1967-04-15 | 1967-10-07 |
| 1968 | 1968-05-24 | 1968-10-02 |
| 1969 | 1969-05-06 | 1969-09-19 |
| 1970 | 1970-04-22 | 1970-10-03 |
| 1971 | 1971-04-20 | 1971-10-05 |
| 1972 | 1972-04-15 | 1972-09-22 |
| 1973 | 1973-05-23 | 1973-10-04 |
| 1974 | 1974-04-01 | 1974-09-21 |
| 1975 | 1975-04-26 | 1975-09-20 |
| 1976 | 1976-04-19 | 1976-09-27 |
| 1977 | 1977-04-11 | 1977-09-16 |
| 1978 | 1978-04-08 | 1978-09-24 |
| 1979 | 1979-05-11 | 1979-09-07 |
| 1980 | 1980-04-24 | 1980-09-25 |
| 1981 | 1981-05-19 | 1981-10-07 |
| 1982 | 1982-05-13 | 1982-10-11 |
| 1983 | 1983-05-15 | 1983-09-19 |
| 1984 | 1984-05-08 | 1984-09-26 |
| 1985 | 1985-05-14 | 1985-09-23 |
| 1986 | 1986-04-26 | 1986-10-06 |
| 1987 | 1987-04-22 | 1987-09-29 |
| 1988 | 1988-04-06 | 1988-09-25 |
| 1989 | 1989-04-26 | 1989-09-15 |
| 1990 | 1990-05-02 | 1990-09-22 |
| 1991 | 1991-05-16 | 1991-09-19 |
| 1992 | 1992-05-19 | 1992-09-23 |
| 1993 | 1993-05-07 | 1993-10-10 |
| 1994 | 1994-04-22 | 1994-09-28 |
| 1995 | 1995-03-23 | 1995-09-13 |
| 1996 | 1996-05-04 | 1996-09-12 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 43 | 125 | 1954 | 87 |
| 35 C (95 F): Days | 39 | 45 | 1954 | 6 |
| 40 C (104 F): Days | 3 | 3 | 1980 | 1 |
| 90 F (32.2 C): Days | 43 | 101 | 1954 | 51 |
| 100 F (37.8 C): Days | 17 | 11 | 1993 | 2 |
| 0 C (32 F): Ice days (max | 33 | 7 | 1977 | 5 |
| 0 C (32 F): Frost days (min | 43 | 105 | 1968 | 88 |
| -10 C (14 F): Days with min | 40 | 21 | 1977 | 10 |
| -20 C (-4 F): Days with min | 4 | 3 | 1966 | 2 |
| 20 C (68 F): Tropical nights (min | 42 | 52 | 1995 | 27 |
| 25 C (77 F): Days with min | 1 | 1 | 1973 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 43 | 59 | 1989 | 40 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 43 | 23 | 1964 | 19 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 41 | 7 | 1967 | 7 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 12 | 2 | 1979 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 5 | 2 | 1987 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1993 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.
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). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).