Rock Mills Threshold Days by Year (USC00017025)
15 fixed thresholds counted per year at Rock Mills (USC00017025): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Rock Mills Thresholds
- Rock Mills: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1975 with 65.
- Rock Mills: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1975 with 31.
- Rock Mills: days with 50 mm (1.97 in) or more of precipitation in 57 years, most in 1961 with 10.
- Rock Mills: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 2002 with 138.
- 15 fixed thresholds have at least one qualifying day at Rock Mills.
Days at or above 30 C (86 F)
55 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1942 | 115 | 118.3 |
| 1943 | 115 | 118.3 |
| 1945 | 128 | 118.3 |
| 1946 | 98 | 118.3 |
| 1947 | 118 | 118.3 |
| 1948 | 130 | 118.3 |
| 1949 | 124 | 118.3 |
| 1950 | 112 | 119.8 |
| 1951 | 99 | 119.8 |
| 1952 | 102 | 119.8 |
| 1953 | 126 | 119.8 |
| 1954 | 137 | 119.8 |
| 1955 | 128 | 119.8 |
| 1956 | 125 | 119.8 |
| 1957 | 119 | 119.8 |
| 1958 | 121 | 119.8 |
| 1959 | 129 | 119.8 |
| 1960 | 122 | 111.1 |
| 1961 | 103 | 111.1 |
| 1962 | 137 | 111.1 |
| 1963 | 110 | 111.1 |
| 1964 | 102 | 111.1 |
| 1965 | 121 | 111.1 |
| 1966 | 109 | 111.1 |
| 1967 | 92 | 111.1 |
| 1968 | 109 | 111.1 |
| 1969 | 106 | 111.1 |
| 1970 | 130 | 115.6 |
| 1971 | 123 | 115.6 |
| 1972 | 109 | 115.6 |
| 1973 | 120 | 115.6 |
| 1975 | 105 | 115.6 |
| 1977 | 127 | 115.6 |
| 1978 | 126 | 115.6 |
| 1979 | 85 | 115.6 |
| 1983 | 79 | 88 |
| 1989 | 97 | 88 |
| 1991 | 111 | 111 |
| 2000 | 123 | 119 |
| 2001 | 113 | 119 |
| 2002 | 138 | 119 |
| 2003 | 112 | 119 |
| 2005 | 108 | 119 |
| 2006 | 120 | 119 |
| 2010 | 123 | 103.4 |
| 2011 | 115 | 103.4 |
| 2012 | 101 | 103.4 |
| 2013 | 65 | 103.4 |
| 2016 | 128 | 103.4 |
| 2017 | 82 | 103.4 |
| 2018 | 110 | 103.4 |
| 2022 | 111 | 94.8 |
| 2023 | 118 | 94.8 |
| 2025 | 105 | 94.8 |
| 2026 | 45 | 94.8 |
| Year | First date | Last date |
|---|---|---|
| 1942 | 1942-04-18 | 1942-10-02 |
| 1943 | 1943-04-27 | 1943-10-20 |
| 1945 | 1945-04-13 | 1945-10-13 |
| 1946 | 1946-04-07 | 1946-10-10 |
| 1947 | 1947-04-08 | 1947-10-19 |
| 1948 | 1948-04-20 | 1948-10-03 |
| 1949 | 1949-04-25 | 1949-10-20 |
| 1950 | 1950-05-03 | 1950-11-01 |
| 1951 | 1951-04-26 | 1951-10-07 |
| 1952 | 1952-05-04 | 1952-10-02 |
| 1953 | 1953-05-01 | 1953-10-21 |
| 1954 | 1954-04-14 | 1954-10-15 |
| 1955 | 1955-04-16 | 1955-10-07 |
| 1956 | 1956-04-27 | 1956-10-01 |
| 1957 | 1957-04-26 | 1957-09-23 |
| 1958 | 1958-04-24 | 1958-10-10 |
| 1959 | 1959-04-07 | 1959-10-11 |
| 1960 | 1960-04-23 | 1960-10-04 |
| 1961 | 1961-05-14 | 1961-10-31 |
| 1962 | 1962-04-30 | 1962-10-18 |
| 1963 | 1963-03-31 | 1963-10-27 |
| 1964 | 1964-04-25 | 1964-09-24 |
| 1965 | 1965-04-10 | 1965-09-24 |
| 1966 | 1966-04-14 | 1966-10-11 |
| 1967 | 1967-04-03 | 1967-10-07 |
| 1968 | 1968-04-20 | 1968-10-02 |
| 1969 | 1969-04-04 | 1969-10-14 |
| 1970 | 1970-04-22 | 1970-10-12 |
| 1971 | 1971-04-12 | 1971-10-17 |
| 1972 | 1972-04-14 | 1972-10-18 |
| 1973 | 1973-05-11 | 1973-10-06 |
| 1975 | 1975-04-28 | 1975-10-15 |
| 1977 | 1977-04-08 | 1977-10-02 |
| 1978 | 1978-04-01 | 1978-09-24 |
| 1979 | 1979-05-11 | 1979-09-16 |
| 1983 | 1983-05-13 | 1983-10-29 |
| 1989 | 1989-04-23 | 1989-10-06 |
| 1991 | 1991-03-27 | 1991-10-29 |
| 2000 | 2000-04-20 | 2000-11-01 |
| 2001 | 2001-04-10 | 2001-10-04 |
| 2002 | 2002-03-16 | 2002-10-12 |
| 2003 | 2003-04-14 | 2003-11-02 |
| 2005 | 2005-05-11 | 2005-10-19 |
| 2006 | 2006-04-12 | 2006-10-05 |
| 2010 | 2010-04-05 | 2010-10-10 |
| 2011 | 2011-04-09 | 2011-10-16 |
| 2012 | 2012-04-03 | 2012-09-28 |
| 2013 | 2013-05-15 | 2013-10-05 |
| 2016 | 2016-03-15 | 2016-10-31 |
| 2017 | 2017-04-21 | 2017-10-12 |
| 2018 | 2018-05-10 | 2018-10-06 |
| 2022 | 2022-05-03 | 2022-09-23 |
| 2023 | 2023-03-26 | 2023-10-06 |
| 2025 | 2025-04-02 | 2025-10-15 |
| 2026 | 2026-04-16 | 2026-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 55 | 138 | 2002 | 45 |
| 35 C (95 F): Days | 52 | 69 | 1954 | 2 |
| 40 C (104 F): Days | 6 | 4 | 1952 | 1 |
| 90 F (32.2 C): Days | 55 | 116 | 1954 | 29 |
| 100 F (37.8 C): Days | 28 | 16 | 1952 | 3 |
| 0 C (32 F): Ice days (max | 27 | 5 | 1970 | 1 |
| 0 C (32 F): Frost days (min | 53 | 113 | 1968 | 33 |
| -10 C (14 F): Days with min | 43 | 9 | 1970 | 1 |
| 20 C (68 F): Tropical nights (min | 53 | 74 | 2022 | 39 |
| 25 C (77 F): Days with min | 4 | 1 | 1943 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 57 | 65 | 1975 | 23 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 57 | 31 | 1975 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 57 | 10 | 1961 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 12 | 2 | 1945 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 3 | 1 | 1983 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.
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 (2026-10-12).