Ralph 1 N Threshold Days by Year (USC00396907)
18 fixed thresholds counted per year at Ralph 1 N (USC00396907): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ralph 1 N Thresholds
- Ralph 1 N: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1971 with 22.
- Ralph 1 N: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 1988 with 73.
- Ralph 1 N: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 1988 with 51.
- Ralph 1 N: days with a maximum temperature at or below 0 C (32 F) in 54 years, most in 1996 with 94.
- 18 fixed thresholds have at least one qualifying day at Ralph 1 N.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1942 | 27 | 37 |
| 1943 | 41 | 37 |
| 1944 | 21 | 37 |
| 1945 | 38 | 37 |
| 1946 | 39 | 37 |
| 1947 | 40 | 37 |
| 1948 | 37 | 37 |
| 1949 | 53 | 37 |
| 1950 | 29 | 41.9 |
| 1952 | 59 | 41.9 |
| 1953 | 25 | 41.9 |
| 1954 | 43 | 41.9 |
| 1955 | 58 | 41.9 |
| 1956 | 36 | 41.9 |
| 1957 | 31 | 41.9 |
| 1958 | 40 | 41.9 |
| 1959 | 56 | 41.9 |
| 1960 | 51 | 41.4 |
| 1961 | 67 | 41.4 |
| 1962 | 20 | 41.4 |
| 1963 | 51 | 41.4 |
| 1965 | 18 | 41.4 |
| 1966 | 49 | 41.4 |
| 1967 | 42 | 41.4 |
| 1968 | 31 | 41.4 |
| 1969 | 44 | 41.4 |
| 1970 | 57 | 44.4 |
| 1971 | 44 | 44.4 |
| 1972 | 35 | 44.4 |
| 1975 | 40 | 44.4 |
| 1976 | 60 | 44.4 |
| 1977 | 45 | 44.4 |
| 1978 | 38 | 44.4 |
| 1979 | 36 | 44.4 |
| 1981 | 57 | 49.6 |
| 1982 | 42 | 49.6 |
| 1983 | 55 | 49.6 |
| 1984 | 51 | 49.6 |
| 1985 | 43 | 49.6 |
| 1986 | 35 | 49.6 |
| 1987 | 40 | 49.6 |
| 1988 | 73 | 49.6 |
| 1989 | 50 | 49.6 |
| 1990 | 63 | 40.8 |
| 1991 | 46 | 40.8 |
| 1992 | 32 | 40.8 |
| 1993 | 10 | 40.8 |
| 1994 | 44 | 40.8 |
| 1995 | 42 | 40.8 |
| 1996 | 38 | 40.8 |
| 1997 | 43 | 40.8 |
| 1998 | 53 | 40.8 |
| 1999 | 37 | 40.8 |
| 2000 | 56 | 56 |
| Year | First date | Last date |
|---|---|---|
| 1942 | 1942-04-22 | 1942-09-10 |
| 1943 | 1943-05-27 | 1943-09-29 |
| 1944 | 1944-05-13 | 1944-08-28 |
| 1945 | 1945-06-21 | 1945-09-06 |
| 1946 | 1946-06-15 | 1946-10-01 |
| 1947 | 1947-07-02 | 1947-10-20 |
| 1948 | 1948-05-18 | 1948-09-26 |
| 1949 | 1949-04-29 | 1949-10-05 |
| 1950 | 1950-06-06 | 1950-09-06 |
| 1952 | 1952-04-27 | 1952-09-27 |
| 1953 | 1953-06-12 | 1953-10-01 |
| 1954 | 1954-05-20 | 1954-09-26 |
| 1955 | 1955-05-01 | 1955-10-10 |
| 1956 | 1956-05-21 | 1956-10-12 |
| 1957 | 1957-07-02 | 1957-09-28 |
| 1958 | 1958-05-11 | 1958-10-13 |
| 1959 | 1959-06-03 | 1959-09-13 |
| 1960 | 1960-06-07 | 1960-10-04 |
| 1961 | 1961-06-08 | 1961-09-18 |
| 1962 | 1962-04-24 | 1962-09-07 |
| 1963 | 1963-06-28 | 1963-10-05 |
| 1965 | 1965-07-07 | 1965-08-23 |
| 1966 | 1966-05-04 | 1966-09-20 |
| 1967 | 1967-05-22 | 1967-09-30 |
| 1968 | 1968-04-30 | 1968-09-14 |
| 1969 | 1969-05-14 | 1969-09-19 |
| 1970 | 1970-05-06 | 1970-09-30 |
| 1971 | 1971-06-23 | 1971-09-13 |
| 1972 | 1972-05-16 | 1972-09-19 |
| 1975 | 1975-05-16 | 1975-10-06 |
| 1976 | 1976-06-01 | 1976-10-02 |
| 1977 | 1977-04-09 | 1977-09-05 |
| 1978 | 1978-06-23 | 1978-09-25 |
| 1979 | 1979-05-16 | 1979-09-26 |
| 1981 | 1981-04-16 | 1981-09-18 |
| 1982 | 1982-05-03 | 1982-09-20 |
| 1983 | 1983-05-27 | 1983-09-27 |
| 1984 | 1984-05-16 | 1984-09-19 |
| 1985 | 1985-05-03 | 1985-09-15 |
| 1986 | 1986-05-04 | 1986-08-30 |
| 1987 | 1987-04-18 | 1987-10-03 |
| 1988 | 1988-05-26 | 1988-09-06 |
| 1989 | 1989-04-22 | 1989-09-30 |
| 1990 | 1990-06-09 | 1990-10-05 |
| 1991 | 1991-06-11 | 1991-10-16 |
| 1992 | 1992-04-30 | 1992-10-02 |
| 1993 | 1993-06-20 | 1993-10-06 |
| 1994 | 1994-04-17 | 1994-09-28 |
| 1995 | 1995-06-14 | 1995-09-15 |
| 1996 | 1996-06-09 | 1996-09-09 |
| 1997 | 1997-05-31 | 1997-10-07 |
| 1998 | 1998-05-17 | 1998-09-18 |
| 1999 | 1999-05-29 | 1999-09-22 |
| 2000 | 2000-06-07 | 2000-09-29 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 73 | 1988 | 56 |
| 35 C (95 F): Days | 53 | 30 | 1988 | 15 |
| 40 C (104 F): Days | 16 | 3 | 1949 | 1 |
| 90 F (32.2 C): Days | 54 | 51 | 1988 | 35 |
| 100 F (37.8 C): Days | 41 | 10 | 1961 | 4 |
| 110 F (43.3 C): Days | 1 | 1 | 1981 | 1 |
| 0 C (32 F): Ice days (max | 54 | 94 | 1996 | 65 |
| 0 C (32 F): Frost days (min | 51 | 221 | 1945 | 188 |
| -10 C (14 F): Days with min | 51 | 119 | 1950 | 88 |
| -20 C (-4 F): Days with min | 51 | 56 | 1949 | 17 |
| -30 C (-22 F): Days with min | 48 | 15 | 1950 | 2 |
| -40 C (-40 F): Days with min | 5 | 1 | 1944 | 1 |
| 20 C (68 F): Tropical nights (min | 21 | 5 | 1976 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 57 | 22 | 1971 | 11 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 51 | 6 | 1943 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 2 | 1976 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 31 | 6 | 1989 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 1984 | 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 (2025-12-31).