Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales. Data are available for bulk download.
Base Period
Trend

Filter
Illinois Average Temperature
December-February
Period
Average Temperature
Rank
(out of 130)
December 2024-February 202528.8ยฐF63
December 2023-February 202435.6ยฐF129
December 2022-February 202333.7ยฐF122
December 2021-February 202230.1ยฐF99
December 2020-February 202127.8ยฐF51
December 2019-February 202033.1ยฐF120
December 2018-February 201929.7ยฐF88
December 2017-February 201828.6ยฐF61
December 2016-February 201734.0ยฐF125
December 2015-February 201633.9ยฐF124
December 2014-February 201526.3ยฐF33
December 2013-February 201421.6ยฐF9
December 2012-February 201332.0ยฐF111
December 2011-February 201234.5ยฐF126
December 2010-February 201125.6ยฐF26
December 2009-February 201025.4ยฐF22
December 2008-February 200926.6ยฐF34
December 2007-February 200827.7ยฐF46
December 2006-February 200729.1ยฐF74
December 2005-February 200631.7ยฐF109
December 2004-February 200532.1ยฐF112
December 2003-February 200429.5ยฐF87
December 2002-February 200327.1ยฐF39
December 2001-February 200234.7ยฐF128
December 2000-February 200124.7ยฐF18
December 1999-February 200032.4ยฐF114
December 1998-February 199932.5ยฐF116
December 1997-February 199834.6ยฐF127
December 1996-February 199728.5ยฐF59
December 1995-February 199627.7ยฐF46
December 1994-February 199530.5ยฐF103
December 1993-February 199426.1ยฐF30
December 1992-February 199328.5ยฐF59
December 1991-February 199233.9ยฐF124
December 1990-February 199129.3ยฐF82
December 1989-February 199030.0ยฐF96
December 1988-February 198929.4ยฐF84
December 1987-February 198827.7ยฐF46
December 1986-February 198731.3ยฐF108
December 1985-February 198625.7ยฐF27
December 1984-February 198526.1ยฐF30
December 1983-February 198425.1ยฐF20
December 1982-February 198333.6ยฐF121
December 1981-February 198222.9ยฐF11
December 1980-February 198129.1ยฐF74
December 1979-February 198027.6ยฐF45
December 1978-February 197919.7ยฐF2
December 1977-February 197819.5ยฐF1
December 1976-February 197720.7ยฐF5
December 1975-February 197630.9ยฐF106
December 1974-February 197529.8ยฐF92
December 1973-February 197428.4ยฐF56
December 1972-February 197328.7ยฐF62
December 1971-February 197229.2ยฐF78
December 1970-February 197127.7ยฐF46
December 1969-February 197024.3ยฐF16
December 1968-February 196927.4ยฐF41
December 1967-February 196826.8ยฐF37
December 1966-February 196728.4ยฐF56
December 1965-February 196628.9ยฐF69
December 1964-February 196527.7ยฐF46
December 1963-February 196425.8ยฐF29
December 1962-February 196321.4ยฐF7
December 1961-February 196225.5ยฐF25
December 1960-February 196127.9ยฐF53
December 1959-February 196030.0ยฐF96
December 1958-February 195924.6ยฐF17
December 1957-February 195827.5ยฐF42
December 1956-February 195729.9ยฐF94
December 1955-February 195628.0ยฐF54
December 1954-February 195529.3ยฐF82
December 1953-February 195432.8ยฐF118
December 1952-February 195332.4ยฐF114
December 1951-February 195230.8ยฐF105
December 1950-February 195125.7ยฐF27
December 1949-February 195031.9ยฐF110
December 1948-February 194930.5ยฐF103
December 1947-February 194827.1ยฐF39
December 1946-February 194729.3ยฐF82
December 1945-February 194628.1ยฐF55
December 1944-February 194525.4ยฐF22
December 1943-February 194430.3ยฐF100
December 1942-February 194327.8ยฐF51
December 1941-February 194229.8ยฐF92
December 1940-February 194129.8ยฐF92
December 1939-February 194025.4ยฐF22
December 1938-February 193930.5ยฐF103
December 1937-February 193830.1ยฐF99
December 1936-February 193729.1ยฐF74
December 1935-February 193620.0ยฐF3
December 1934-February 193528.8ยฐF63
December 1933-February 193430.1ยฐF99
December 1932-February 193331.0ยฐF107
December 1931-February 193236.4ยฐF130
December 1930-February 193132.5ยฐF116
December 1929-February 193028.9ยฐF69
December 1928-February 192924.7ยฐF18
December 1927-February 192828.8ยฐF63
December 1926-February 192729.5ยฐF87
December 1925-February 192628.9ยฐF69
December 1924-February 192527.5ยฐF42
December 1923-February 192429.2ยฐF78
December 1922-February 192328.8ยฐF63
December 1921-February 192229.2ยฐF78
December 1920-February 192132.9ยฐF119
December 1919-February 192023.7ยฐF15
December 1918-February 191932.8ยฐF118
December 1917-February 191820.2ยฐF4
December 1916-February 191725.3ยฐF21
December 1915-February 191627.5ยฐF42
December 1914-February 191526.6ยฐF34
December 1913-February 191429.5ยฐF87
December 1912-February 191329.0ยฐF70
December 1911-February 191222.7ยฐF10
December 1910-February 191129.1ยฐF74
December 1909-February 191023.3ยฐF14
December 1908-February 190930.7ยฐF104
December 1907-February 190829.3ยฐF82
December 1906-February 190729.9ยฐF94
December 1905-February 190629.4ยฐF84
December 1904-February 190521.5ยฐF8
December 1903-February 190421.1ยฐF6
December 1902-February 190326.1ยฐF30
December 1901-February 190223.0ยฐF13
December 1900-February 190126.8ยฐF37
December 1899-February 190026.6ยฐF34
December 1898-February 189922.9ยฐF11
December 1897-February 189828.4ยฐF56
December 1896-February 189729.2ยฐF78
December 1895-February 189629.8ยฐF92

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