Nenzel 20 S Threshold Days by Year (USC00255860)
21 fixed thresholds counted per year at Nenzel 20 S (USC00255860): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Nenzel 20 S Thresholds
- Nenzel 20 S: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1942 with 26.
- Nenzel 20 S: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 1939 with 94.
- Nenzel 20 S: days with a maximum temperature at or above 35 C (95 F) in 54 years, most in 1936 with 52.
- Nenzel 20 S: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 1936 with 74.
- 21 fixed thresholds have at least one qualifying day at Nenzel 20 S.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1917 | 55 | 66 |
| 1918 | 68 | 66 |
| 1919 | 75 | 66 |
| 1920 | 58 | 54.6 |
| 1921 | 57 | 54.6 |
| 1922 | 71 | 54.6 |
| 1923 | 54 | 54.6 |
| 1924 | 43 | 54.6 |
| 1925 | 55 | 54.6 |
| 1926 | 54 | 54.6 |
| 1927 | 48 | 54.6 |
| 1928 | 45 | 54.6 |
| 1929 | 61 | 54.6 |
| 1930 | 57 | 81 |
| 1931 | 87 | 81 |
| 1932 | 69 | 81 |
| 1933 | 87 | 81 |
| 1934 | 89 | 81 |
| 1935 | 69 | 81 |
| 1936 | 93 | 81 |
| 1937 | 82 | 81 |
| 1938 | 83 | 81 |
| 1939 | 94 | 81 |
| 1940 | 83 | 67.4 |
| 1942 | 58 | 67.4 |
| 1943 | 74 | 67.4 |
| 1945 | 55 | 67.4 |
| 1949 | 67 | 67.4 |
| 1950 | 55 | 70 |
| 1956 | 88 | 70 |
| 1957 | 58 | 70 |
| 1958 | 69 | 70 |
| 1959 | 80 | 70 |
| 1960 | 63 | 56 |
| 1961 | 71 | 56 |
| 1962 | 41 | 56 |
| 1963 | 73 | 56 |
| 1964 | 58 | 56 |
| 1965 | 38 | 56 |
| 1966 | 61 | 56 |
| 1967 | 47 | 56 |
| 1968 | 52 | 56 |
| 1969 | 56 | 56 |
| 1970 | 78 | 63.9 |
| 1971 | 58 | 63.9 |
| 1972 | 51 | 63.9 |
| 1973 | 69 | 63.9 |
| 1974 | 62 | 63.9 |
| 1976 | 70 | 63.9 |
| 1977 | 57 | 63.9 |
| 1978 | 68 | 63.9 |
| 1979 | 62 | 63.9 |
| 1980 | 70 | 58.5 |
| 1981 | 47 | 58.5 |
| Year | First date | Last date |
|---|---|---|
| 1917 | 1917-06-09 | 1917-09-22 |
| 1918 | 1918-05-04 | 1918-10-14 |
| 1919 | 1919-04-18 | 1919-09-30 |
| 1920 | 1920-06-07 | 1920-10-09 |
| 1921 | 1921-06-10 | 1921-10-13 |
| 1922 | 1922-06-04 | 1922-10-28 |
| 1923 | 1923-04-18 | 1923-09-24 |
| 1924 | 1924-04-23 | 1924-10-01 |
| 1925 | 1925-05-19 | 1925-09-16 |
| 1926 | 1926-04-29 | 1926-10-07 |
| 1927 | 1927-04-26 | 1927-10-26 |
| 1928 | 1928-05-01 | 1928-10-10 |
| 1929 | 1929-05-24 | 1929-10-05 |
| 1930 | 1930-04-08 | 1930-10-10 |
| 1931 | 1931-04-12 | 1931-10-26 |
| 1932 | 1932-05-12 | 1932-10-01 |
| 1933 | 1933-05-17 | 1933-10-29 |
| 1934 | 1934-04-21 | 1934-10-07 |
| 1935 | 1935-06-13 | 1935-10-15 |
| 1936 | 1936-04-13 | 1936-10-18 |
| 1937 | 1937-05-14 | 1937-10-28 |
| 1938 | 1938-04-18 | 1938-10-27 |
| 1939 | 1939-04-22 | 1939-09-27 |
| 1940 | 1940-04-14 | 1940-10-25 |
| 1942 | 1942-05-25 | 1942-10-10 |
| 1943 | 1943-03-29 | 1943-10-11 |
| 1945 | 1945-06-21 | 1945-10-16 |
| 1949 | 1949-04-25 | 1949-09-26 |
| 1950 | 1950-04-22 | 1950-10-30 |
| 1956 | 1956-05-08 | 1956-10-16 |
| 1957 | 1957-05-07 | 1957-10-01 |
| 1958 | 1958-04-16 | 1958-10-19 |
| 1959 | 1959-04-06 | 1959-09-14 |
| 1960 | 1960-04-21 | 1960-10-09 |
| 1961 | 1961-04-19 | 1961-10-16 |
| 1962 | 1962-04-20 | 1962-10-14 |
| 1963 | 1963-05-06 | 1963-10-05 |
| 1964 | 1964-04-16 | 1964-10-15 |
| 1965 | 1965-04-29 | 1965-10-09 |
| 1966 | 1966-05-04 | 1966-09-24 |
| 1967 | 1967-05-22 | 1967-10-03 |
| 1968 | 1968-05-01 | 1968-10-30 |
| 1969 | 1969-05-14 | 1969-09-28 |
| 1970 | 1970-05-07 | 1970-10-05 |
| 1971 | 1971-04-15 | 1971-10-10 |
| 1972 | 1972-05-15 | 1972-09-19 |
| 1973 | 1973-05-18 | 1973-09-10 |
| 1974 | 1974-05-19 | 1974-09-26 |
| 1976 | 1976-05-20 | 1976-10-01 |
| 1977 | 1977-04-09 | 1977-09-20 |
| 1978 | 1978-05-24 | 1978-09-26 |
| 1979 | 1979-05-06 | 1979-10-01 |
| 1980 | 1980-04-20 | 1980-10-08 |
| 1981 | 1981-04-26 | 1981-09-19 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 94 | 1939 | 47 |
| 35 C (95 F): Days | 54 | 52 | 1936 | 6 |
| 40 C (104 F): Days | 23 | 19 | 1936 | 1 |
| 45 C (113 F): Days | 1 | 2 | 1940 | 2 |
| 90 F (32.2 C): Days | 54 | 74 | 1936 | 26 |
| 100 F (37.8 C): Days | 51 | 35 | 1936 | 1 |
| 110 F (43.3 C): Days | 5 | 3 | 1934 | 2 |
| 0 C (32 F): Ice days (max | 54 | 69 | 1978 | 26 |
| 0 C (32 F): Frost days (min | 53 | 202 | 1919 | 166 |
| -10 C (14 F): Days with min | 53 | 89 | 1978 | 58 |
| -20 C (-4 F): Days with min | 53 | 39 | 1936 | 7 |
| -30 C (-22 F): Days with min | 38 | 14 | 1936 | 3 |
| -40 C (-40 F): Days with min | 1 | 1 | 1936 | 1 |
| 20 C (68 F): Tropical nights (min | 41 | 20 | 1936 | 5 |
| 25 C (77 F): Days with min | 2 | 1 | 1938 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 55 | 26 | 1942 | 19 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 52 | 8 | 1921 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 22 | 3 | 1942 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1962 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 43 | 9 | 1929 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 8 | 1 | 1920 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.
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).