>>>Return to: Lincoln's Hot Weather Climatology
The following table lists the date of the first temperature of 100°F or higher for each year.
Note in some years Lincoln did not reach 100°F or higher and "none" is listed.
There were 25 years which had no temperatures reaching 100°F or higher:
(1889, 1891, 1893, 1896, 1902, 1903, 1904, 1905, 1906, 1908, 1915, 1920,
1923, 1949, 1958, 1959, 1965, 1968, 1972, 1986, 1992, 1993, 1994, 1996, 2019).
The earliest 100°F or higher temperature occurred on May 14 in 2013.
The latest first 100°F or higher occurred on September 5 in 1899.
There have only been 4 occurrences of a first 100°F or higher in May:
(May 14, 2013; May 24, 1967; May 26, 2018; May 29, 1934
The first 100°F or higher in 2025 occurred on June 20.
Calendar is day of the year (for example, June 20 is the 171st day of the year)
| Year | Month | Day | Calendar | Year | Month | Day | Calendar | ||
| 1887 | July | 29 | 210 | 1957 | July | 7 | 188 | ||
| 1888 | July | 12 | 193 | 1958 | none | none | none | ||
| 1889 | none | none | none | 1959 | none | none | none | ||
| 1890 | July | 6 | 187 | 1960 | June | 4 | 155 | ||
| 1891 | none | none | none | 1961 | June | 29 | 180 | ||
| 1892 | July | 21 | 202 | 1962 | August | 19 | 231 | ||
| 1893 | none | none | none | 1963 | June | 7 | 158 | ||
| 1894 | July | 26 | 207 | 1964 | July | 2 | 183 | ||
| 1895 | July | 16 | 197 | 1965 | none | none | none | ||
| 1896 | none | none | none | 1966 | July | 5 | 186 | ||
| 1897 | June | 16 | 167 | 1967 | May | 24 | 146 | ||
| 1898 | August | 20 | 232 | 1968 | none | none | none | ||
| 1899 | September | 5 | 248 | 1969 | June | 6 | 157 | ||
| 1900 | July | 6 | 187 | 1970 | June | 28 | 179 | ||
| 1901 | June | 28 | 179 | 1971 | June | 24 | 175 | ||
| 1902 | none | none | none | 1972 | none | none | none | ||
| 1903 | none | none | none | 1973 | June | 24 | 175 | ||
| 1904 | none | none | none | 1974 | June | 19 | 170 | ||
| 1905 | none | none | none | 1975 | August | 12 | 224 | ||
| 1906 | none | none | none | 1976 | July | 9 | 190 | ||
| 1907 | July | 5 | 186 | 1977 | July | 3 | 184 | ||
| 1908 | none | none | none | 1978 | July | 4 | 185 | ||
| 1909 | August | 15 | 227 | 1979 | June | 14 | 165 | ||
| 1910 | July | 25 | 206 | 1980 | June | 26 | 177 | ||
| 1911 | June | 2 | 153 | 1981 | July | 11 | 192 | ||
| 1912 | July | 8 | 189 | 1982 | August | 3 | 215 | ||
| 1913 | July | 4 | 185 | 1983 | July | 18 | 199 | ||
| 1914 | July | 11 | 192 | 1984 | July | 8 | 189 | ||
| 1915 | none | none | none | 1985 | August | 31 | 243 | ||
| 1916 | July | 11 | 192 | 1986 | none | none | none | ||
| 1917 | June | 30 | 181 | 1987 | June | 12 | 163 | ||
| 1918 | June | 10 | 161 | 1988 | June | 18 | 169 | ||
| 1919 | July | 9 | 190 | 1989 | June | 20 | 171 | ||
| 1920 | none | none | none | 1990 | June | 28 | 179 | ||
| 1921 | June | 28 | 179 | 1991 | July | 5 | 186 | ||
| 1922 | June | 23 | 174 | 1992 | none | none | none | ||
| 1923 | none | none | none | 1993 | none | none | none | ||
| 1924 | August | 3 | 215 | 1994 | none | none | none | ||
| 1925 | July | 1 | 182 | 1995 | July | 10 | 191 | ||
| 1926 | June | 12 | 163 | 1996 | none | none | none | ||
| 1927 | July | 6 | 187 | 1997 | July | 25 | 206 | ||
| 1928 | July | 6 | 187 | 1998 | July | 20 | 201 | ||
| 1929 | August | 21 | 239 | 1999 | July | 28 | 209 | ||
| 1930 | June | 21 | 172 | 2000 | August | 12 | 224 | ||
| 1931 | June | 23 | 174 | 2001 | July | 6 | 187 | ||
| 1932 | July | 14 | 195 | 2002 | July | 19 | 200 | ||
| 1933 | June | 5 | 156 | 2003 | July | 14 | 195 | ||
| 1934 | May | 29 | 149 | 2004 | August | 3 | 215 | ||
| 1935 | July | 8 | 189 | 2005 | July | 17 | 198 | ||
| 1936 | June | 15 | 166 | 2006 | June | 30 | 181 | ||
| 1937 | June | 19 | 170 | 2007 | July | 7 | 188 | ||
| 1938 | July | 1 | 182 | 2008 | August | 3 | 215 | ||
| 1939 | July | 6 | 187 | 2009 | August | 8 | 220 | ||
| 1940 | June | 18 | 169 | 2010 | August | 12 | 224 | ||
| 1941 | July | 9 | 190 | 2011 | June | 6 | 157 | ||
| 1942 | July | 14 | 195 | 2012 | June | 27 | 178 | ||
| 1943 | June | 24 | 175 | 2013 | May | 14 | 134 | ||
| 1944 | June | 25 | 176 | 2014 | July | 21 | 202 | ||
| 1945 | July | 23 | 204 | 2015 | July | 24 | 205 | ||
| 1946 | June | 15 | 166 | 2016 | June | 15 | 166 | ||
| 1947 | July | 28 | 209 | 2017 | July | 21 | 202 | ||
| 1948 | August | 22 | 234 | 2018 | May | 26 | 146 | ||
| 1949 | none | none | none | 2019 | none | none | none | ||
| 1950 | June | 23 | 174 | 2020 | none | none | none | ||
| 1951 | August | 2 | 214 | 2021 | June | 16 | 167 | ||
| 1952 | June | 11 | 162 | 2022 | June | 13 | 164 | ||
| 1953 | June | 11 | 162 | 2023 | June | 28 | 179 | ||
| 1954 | June | 25 | 176 | 2024 | June | 24 | 175 | ||
| 1955 | July | 26 | 207 | 2025 | June | 20 | 171 | ||
| 1956 | June | 21 | 172 | . | . | . | . |