Hart Mtn Refuge Threshold Days by Year (USC00353692)
14 fixed thresholds counted per year at Hart Mtn Refuge (USC00353692): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hart Mtn Refuge Thresholds
- Hart Mtn Refuge: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1981 with 14.
- Hart Mtn Refuge: nights with a minimum temperature at or below 0 C (32 F) in 64 years, most in 1948 with 224.
- Hart Mtn Refuge: nights with a minimum temperature at or below -10 C (14 F) in 64 years, most in 1955 with 70.
- Hart Mtn Refuge: days with 10 cm (3.9 in) or more of snowfall in 64 years, most in 1951 with 13.
- 14 fixed thresholds have at least one qualifying day at Hart Mtn Refuge.
Days at or above 30 C (86 F)
61 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 20 | 13.7 |
| 1941 | 10 | 13.7 |
| 1942 | 21 | 13.7 |
| 1943 | 12 | 13.7 |
| 1944 | 12 | 13.7 |
| 1945 | 17 | 13.7 |
| 1947 | 12 | 13.7 |
| 1948 | 7 | 13.7 |
| 1949 | 12 | 13.7 |
| 1950 | 25 | 17.1 |
| 1951 | 24 | 17.1 |
| 1952 | 6 | 17.1 |
| 1953 | 15 | 17.1 |
| 1954 | 16 | 17.1 |
| 1955 | 26 | 17.1 |
| 1956 | 13 | 17.1 |
| 1957 | 5 | 17.1 |
| 1958 | 13 | 17.1 |
| 1959 | 28 | 17.1 |
| 1960 | 28 | 19.7 |
| 1961 | 42 | 19.7 |
| 1962 | 14 | 19.7 |
| 1963 | 8 | 19.7 |
| 1964 | 13 | 19.7 |
| 1965 | 6 | 19.7 |
| 1966 | 15 | 19.7 |
| 1967 | 29 | 19.7 |
| 1968 | 25 | 19.7 |
| 1969 | 17 | 19.7 |
| 1970 | 31 | 23 |
| 1971 | 29 | 23 |
| 1972 | 21 | 23 |
| 1974 | 25 | 23 |
| 1976 | 17 | 23 |
| 1977 | 24 | 23 |
| 1978 | 17 | 23 |
| 1979 | 20 | 23 |
| 1980 | 10 | 17.4 |
| 1981 | 21 | 17.4 |
| 1982 | 15 | 17.4 |
| 1983 | 6 | 17.4 |
| 1984 | 12 | 17.4 |
| 1985 | 28 | 17.4 |
| 1987 | 17 | 17.4 |
| 1988 | 36 | 17.4 |
| 1989 | 12 | 17.4 |
| 1990 | 33 | 30.6 |
| 1991 | 22 | 30.6 |
| 1992 | 27 | 30.6 |
| 1994 | 39 | 30.6 |
| 1996 | 32 | 30.6 |
| 2011 | 17 | 28.5 |
| 2012 | 37 | 28.5 |
| 2013 | 33 | 28.5 |
| 2014 | 31 | 28.5 |
| 2015 | 26 | 28.5 |
| 2016 | 27 | 28.5 |
| 2020 | 34 | 37.8 |
| 2021 | 51 | 37.8 |
| 2024 | 25 | 37.8 |
| 2026 | 41 | 37.8 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-06-11 | 1940-08-31 |
| 1941 | 1941-07-06 | 1941-08-16 |
| 1942 | 1942-07-02 | 1942-08-23 |
| 1943 | 1943-07-18 | 1943-09-24 |
| 1944 | 1944-07-15 | 1944-09-11 |
| 1945 | 1945-07-06 | 1945-09-13 |
| 1947 | 1947-07-17 | 1947-09-04 |
| 1948 | 1948-06-29 | 1948-09-10 |
| 1949 | 1949-07-08 | 1949-08-31 |
| 1950 | 1950-06-29 | 1950-09-03 |
| 1951 | 1951-06-27 | 1951-09-16 |
| 1952 | 1952-07-09 | 1952-09-15 |
| 1953 | 1953-07-06 | 1953-09-13 |
| 1954 | 1954-07-04 | 1954-08-08 |
| 1955 | 1955-06-08 | 1955-09-06 |
| 1956 | 1956-06-27 | 1956-08-22 |
| 1957 | 1957-07-11 | 1957-09-06 |
| 1958 | 1958-07-11 | 1958-09-07 |
| 1959 | 1959-06-18 | 1959-08-12 |
| 1960 | 1960-07-06 | 1960-08-19 |
| 1961 | 1961-06-14 | 1961-08-23 |
| 1962 | 1962-07-20 | 1962-09-02 |
| 1963 | 1963-08-05 | 1963-09-28 |
| 1964 | 1964-07-07 | 1964-08-12 |
| 1965 | 1965-07-24 | 1965-08-07 |
| 1966 | 1966-07-22 | 1966-08-25 |
| 1967 | 1967-06-30 | 1967-09-27 |
| 1968 | 1968-06-18 | 1968-08-07 |
| 1969 | 1969-07-19 | 1969-09-02 |
| 1970 | 1970-06-20 | 1970-08-24 |
| 1971 | 1971-07-14 | 1971-08-28 |
| 1972 | 1972-06-28 | 1972-08-28 |
| 1974 | 1974-06-11 | 1974-08-31 |
| 1976 | 1976-06-28 | 1976-09-05 |
| 1977 | 1977-06-05 | 1977-08-20 |
| 1978 | 1978-07-14 | 1978-08-10 |
| 1979 | 1979-07-13 | 1979-09-16 |
| 1980 | 1980-07-21 | 1980-08-11 |
| 1981 | 1981-07-03 | 1981-09-17 |
| 1982 | 1982-07-26 | 1982-09-02 |
| 1983 | 1983-07-30 | 1983-08-09 |
| 1984 | 1984-07-01 | 1984-09-18 |
| 1985 | 1985-06-17 | 1985-09-01 |
| 1987 | 1987-06-13 | 1987-09-23 |
| 1988 | 1988-06-17 | 1988-09-06 |
| 1989 | 1989-07-06 | 1989-08-04 |
| 1990 | 1990-06-21 | 1990-09-11 |
| 1991 | 1991-07-03 | 1991-09-03 |
| 1992 | 1992-06-01 | 1992-09-29 |
| 1994 | 1994-06-28 | 1994-09-27 |
| 1996 | 1996-07-01 | 1996-10-09 |
| 2011 | 2011-07-07 | 2011-09-25 |
| 2012 | 2012-06-22 | 2012-09-22 |
| 2013 | 2013-06-10 | 2013-09-01 |
| 2014 | 2014-07-02 | 2014-08-18 |
| 2015 | 2015-06-09 | 2015-09-13 |
| 2016 | 2016-06-27 | 2016-08-22 |
| 2020 | 2020-05-29 | 2020-09-14 |
| 2021 | 2021-06-02 | 2021-09-08 |
| 2024 | 2024-06-07 | 2024-09-08 |
| 2026 | 2026-06-16 | 2026-08-27 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 61 | 51 | 2021 | 41 |
| 35 C (95 F): Days | 23 | 5 | 2021 | 3 |
| 90 F (32.2 C): Days | 57 | 28 | 2021 | 11 |
| 0 C (32 F): Ice days (max | 61 | 51 | 1952 | 1 |
| 0 C (32 F): Frost days (min | 64 | 224 | 1948 | 91 |
| -10 C (14 F): Days with min | 64 | 70 | 1955 | 8 |
| -20 C (-4 F): Days with min | 46 | 15 | 1949 | 2 |
| -30 C (-22 F): Days with min | 7 | 4 | 1990 | 4 |
| 20 C (68 F): Tropical nights (min | 2 | 1 | 1991 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 67 | 14 | 1981 | 2 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 27 | 2 | 1964 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 3 | 1 | 1943 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 64 | 13 | 1951 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 2 | 1942 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.
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 (2026-10-17).