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Almanac · Wilmington, OH · Climate Almanac
📖 Climate Almanac

Wilmington, OH

39.431°N, 83.777°W · station ILNthr · 1917–2026 · 110 years of record

The Almanac Ribbon

Every day of the year at Wilmington: the record high and record low ever set (outer lines), the everyday normal range (shaded band), and the full record envelope behind it.
-20020406080100120JanFebMarAprMayJunJulAugSepOctNovDeccoldestsince.com · hottestsince.com
Record high Record low Normal high–low band (1991–2020) hottest ever 111°F · coldest ever -25°F

Records by Month

MonthRecord highRecord low
Jan74°Jan 25, 1950-25°Jan 17, 1982
Feb76°Feb 10, 1932-20°Feb 3, 1985
Mar88°Mar 25, 1929-10°Mar 10, 1984
Apr92°Apr 30, 194210°Apr 1, 1923
May97°May 10, 193624°May 10, 1966
Jun104°Jun 28, 194436°Jun 16, 1917
Jul111°Jul 21, 193440°Jul 1, 1988
Aug105°Aug 4, 193037°Aug 30, 1946
Sep104°Sep 14, 193926°Sep 26, 1928
Oct92°Oct 1, 192712°Oct 29, 1925
Nov82°Nov 3, 1946-6°Nov 30, 1958
Dec73°Dec 4, 1982-24°Dec 22, 1989
All-time111°Jul 21, 1934-25°Jan 17, 1982

Longest-Standing Records

The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Wilmington on hottestsince.com; lows on coldestsince.com.

Oldest-standing record highs

DateRecordSetStanding
Apr 2286°1917109yrs
Feb 1468°1918108yrs
Jun 1596°1918108yrs
Aug 4103°1918108yrs
Aug 5103°1918108yrs
Aug 6100°1918108yrs
Apr 885°1919107yrs
May 2993°1919107yrs
Jun 1094°1919107yrs
Jun 1496°1920106yrs
Mar 1881°1921105yrs
Mar 1981°1921105yrs

Oldest-standing record lows

DateRecordSetStanding
Jun 1536°1917109yrs
Jun 1640°1917109yrs
Jul 1251°1917109yrs
Sep 1031°1917109yrs
Sep 1135°1917109yrs
Oct 823°1917109yrs
Dec 8-12°1917109yrs
Dec 9-11°1917109yrs
Dec 10-22°1917109yrs
Dec 11-8°1917109yrs
Dec 14-14°1917109yrs
Dec 29-15°1917109yrs

All-Time Extremes

Hottest ever

111°F
1934-07-21

Coldest ever

-25°F
1982-01-17

Longest heat streak

21 days
≥ 90°F · ended 1921-07-20

The Warming Trend

Wilmington's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
1918: 52.9°F (+0.2 vs 1991–2020)1919: 53.6°F (+0.9 vs 1991–2020)1920: 50.9°F (-1.8 vs 1991–2020)1921: 56.0°F (+3.3 vs 1991–2020)1922: 54.2°F (+1.5 vs 1991–2020)1923: 52.8°F (+0.1 vs 1991–2020)1924: 50.4°F (-2.3 vs 1991–2020)1925: 52.8°F (+0.1 vs 1991–2020)1926: 51.3°F (-1.4 vs 1991–2020)1927: 52.8°F (+0.1 vs 1991–2020)1928: 52.0°F (-0.7 vs 1991–2020)1929: 51.8°F (-0.9 vs 1991–2020)1930: 54.6°F (+1.9 vs 1991–2020)1931: 55.5°F (+2.8 vs 1991–2020)1932: 54.2°F (+1.5 vs 1991–2020)1933: 54.6°F (+1.9 vs 1991–2020)1934: 54.3°F (+1.6 vs 1991–2020)1935: 53.0°F (+0.3 vs 1991–2020)1936: 53.5°F (+0.8 vs 1991–2020)1937: 53.1°F (+0.4 vs 1991–2020)1938: 55.6°F (+2.9 vs 1991–2020)1939: 55.4°F (+2.7 vs 1991–2020)1940: 51.6°F (-1.1 vs 1991–2020)1941: 54.2°F (+1.5 vs 1991–2020)1942: 53.1°F (+0.4 vs 1991–2020)1943: 52.1°F (-0.6 vs 1991–2020)1944: 53.5°F (+0.8 vs 1991–2020)1945: 52.1°F (-0.6 vs 1991–2020)1946: 54.5°F (+1.8 vs 1991–2020)1947: 52.2°F (-0.5 vs 1991–2020)1948: 53.5°F (+0.8 vs 1991–2020)1949: 55.4°F (+2.7 vs 1991–2020)1950: 52.1°F (-0.6 vs 1991–2020)1951: 52.9°F (+0.2 vs 1991–2020)1952: 53.3°F (+0.6 vs 1991–2020)1953: 54.1°F (+1.4 vs 1991–2020)1954: 53.9°F (+1.2 vs 1991–2020)1955: 53.5°F (+0.8 vs 1991–2020)1956: 52.8°F (+0.1 vs 1991–2020)1957: 53.1°F (+0.4 vs 1991–2020)1958: 50.4°F (-2.3 vs 1991–2020)1959: 53.6°F (+0.9 vs 1991–2020)1960: 51.3°F (-1.4 vs 1991–2020)1961: 52.1°F (-0.6 vs 1991–2020)1962: 51.8°F (-0.9 vs 1991–2020)1963: 51.0°F (-1.7 vs 1991–2020)1964: 53.7°F (+1.0 vs 1991–2020)1965: 53.3°F (+0.6 vs 1991–2020)1966: 51.6°F (-1.1 vs 1991–2020)1967: 52.3°F (-0.4 vs 1991–2020)1968: 52.3°F (-0.4 vs 1991–2020)1969: 51.7°F (-1.0 vs 1991–2020)1970: 53.0°F (+0.3 vs 1991–2020)1971: 52.7°F (-0.0 vs 1991–2020)1972: 51.7°F (-1.0 vs 1991–2020)1973: 53.9°F (+1.2 vs 1991–2020)1975: 51.3°F (-1.4 vs 1991–2020)1976: 46.4°F (-6.3 vs 1991–2020)1977: 50.3°F (-2.4 vs 1991–2020)1978: 48.3°F (-4.4 vs 1991–2020)1979: 48.6°F (-4.1 vs 1991–2020)1980: 49.0°F (-3.7 vs 1991–2020)1981: 48.3°F (-4.4 vs 1991–2020)1982: 50.4°F (-2.3 vs 1991–2020)1983: 52.2°F (-0.5 vs 1991–2020)1984: 50.6°F (-2.1 vs 1991–2020)1985: 50.4°F (-2.3 vs 1991–2020)1986: 52.1°F (-0.6 vs 1991–2020)1987: 52.5°F (-0.2 vs 1991–2020)1988: 50.3°F (-2.4 vs 1991–2020)1989: 49.6°F (-3.1 vs 1991–2020)1990: 52.8°F (+0.1 vs 1991–2020)1991: 53.1°F (+0.4 vs 1991–2020)1992: 52.1°F (-0.6 vs 1991–2020)1993: 52.3°F (-0.4 vs 1991–2020)1994: 52.2°F (-0.5 vs 1991–2020)1995: 51.2°F (-1.5 vs 1991–2020)1996: 50.4°F (-2.3 vs 1991–2020)1997: 50.7°F (-2.0 vs 1991–2020)1998: 53.9°F (+1.2 vs 1991–2020)1999: 52.9°F (+0.2 vs 1991–2020)2000: 51.1°F (-1.6 vs 1991–2020)2001: 53.1°F (+0.4 vs 1991–2020)2002: 52.7°F (+0.0 vs 1991–2020)2003: 51.4°F (-1.3 vs 1991–2020)2004: 52.4°F (-0.3 vs 1991–2020)2005: 52.7°F (+0.0 vs 1991–2020)2006: 53.5°F (+0.8 vs 1991–2020)2007: 53.9°F (+1.2 vs 1991–2020)2008: 51.9°F (-0.8 vs 1991–2020)2009: 52.0°F (-0.7 vs 1991–2020)2010: 52.6°F (-0.1 vs 1991–2020)2011: 53.7°F (+1.0 vs 1991–2020)2012: 55.1°F (+2.4 vs 1991–2020)2013: 52.2°F (-0.5 vs 1991–2020)2014: 50.4°F (-2.3 vs 1991–2020)2015: 53.0°F (+0.3 vs 1991–2020)2016: 54.5°F (+1.8 vs 1991–2020)2017: 54.0°F (+1.3 vs 1991–2020)2018: 53.4°F (+0.7 vs 1991–2020)2019: 53.5°F (+0.8 vs 1991–2020)2020: 54.0°F (+1.3 vs 1991–2020)2021: 54.2°F (+1.5 vs 1991–2020)2022: 53.7°F (+1.0 vs 1991–2020)2023: 56.1°F (+3.4 vs 1991–2020)2024: 56.9°F (+4.2 vs 1991–2020)2025: 53.0°F (+0.3 vs 1991–2020)19182025annual mean temperature · warmer ▲ redder

Days Above / Below the Mark

7 days ≥90°F in 2026 · normal 24 · record 72 in 1936
64 days ≤32°F in 2026 · normal 116 · record 175 in 1976

The Full Record

Every day of the year, record and normal high & low with the year each record was set. Type to filter, click a column to sort.
Show me the data — the full daily record
DateRec HighYrNorm HiNorm LoRec LowYr
Jan 166°195238°24°-6°1918
Jan 263°198539°24°-13°2018
Jan 366°200439°24°-7°1928
Jan 463°202339°24°-4°1918
Jan 565°199739°24°-9°1924
Jan 669°194639°24°-9°1924
Jan 765°200839°24°-9°2014
Jan 866°193738°24°-16°1942
Jan 966°193938°23°-8°1976
Jan 1060°201838°23°-18°1982
Jan 1166°202037°22°-20°1982
Jan 1264°196037°22°-17°1918
Jan 1368°193237°22°-14°1918
Jan 1472°193236°21°-10°1929
Jan 1564°193236°21°-11°1982
Jan 1662°195036°21°-17°1982
Jan 1762°193236°21°-25°1982
Jan 1867°197336°20°-25°1982
Jan 1966°199636°20°-24°1994
Jan 2062°195135°19°-22°1985
Jan 2164°195935°19°-24°1984
Jan 2270°193335°19°-25°1984
Jan 2368°196735°19°-22°1936
Jan 2469°194335°19°-18°1963
Jan 2574°195035°19°-12°2000
Jan 2667°195036°20°-9°1940
Jan 2767°194436°20°-13°1936
Jan 2864°200236°20°-15°1948
Jan 2968°194737°21°-17°1926
Jan 3065°197537°21°-10°1966
Jan 3165°200237°21°-14°2026
Feb 162°200237°21°-10°1929
Feb 265°198938°21°-14°1951
Feb 367°202538°21°-20°1985
Feb 468°196238°22°-18°1985
Feb 564°193838°22°-14°1918
Feb 665°192738°21°-14°1977
Feb 766°192538°22°-15°1977
Feb 872°193738°22°-16°1977
Feb 971°202338°22°-15°1977
Feb 1076°193238°22°-15°1982
Feb 1172°199939°22°-16°1982
Feb 1264°199939°22°-9°1981
Feb 1373°193839°22°-10°1981
Feb 1468°191840°23°-4°1979
Feb 1573°195440°23°-6°1943
Feb 1668°192740°24°-5°1943
Feb 1766°192741°24°-12°2015
Feb 1869°194841°24°-12°1936
Feb 1972°193941°25°-13°1936
Feb 2076°201842°25°-12°2015
Feb 2171°193042°25°-6°2008
Feb 2271°192243°26°-9°1963
Feb 2372°202343°26°-9°2015
Feb 2474°201743°26°-14°2015
Feb 2573°200043°26°-5°1967
Feb 2673°194444°26°-7°1963
Feb 2766°200044°26°-13°1934
Feb 2870°199644°27°-5°1934
Feb 2976°202345°27°-1°1993
Mar 167°192345°27°0°1960
Mar 274°197445°27°-4°1980
Mar 377°197446°27°-4°1980
Mar 476°198346°27°-2°1980
Mar 577°197346°28°-3°2015
Mar 679°197447°28°4°1960
Mar 782°197447°28°-3°1943
Mar 878°200048°29°-1°1960
Mar 980°197348°29°-9°1984
Mar 1075°197349°29°-10°1984
Mar 1176°199049°30°9°1996
Mar 1277°196750°30°2°1948
Mar 1380°197350°31°-2°1960
Mar 1477°199050°31°6°1993
Mar 1581°194451°31°6°1932
Mar 1675°193451°32°7°1941
Mar 1775°194551°32°5°1941
Mar 1881°192152°32°6°1934
Mar 1981°192152°33°12°1923
Mar 2084°201253°33°11°1956
Mar 2187°193853°34°14°2006
Mar 2282°201254°34°15°1934
Mar 2384°192954°34°7°1974
Mar 2488°192954°35°5°1974
Mar 2580°195055°35°6°1940
Mar 2681°192155°36°12°1955
Mar 2781°194556°36°13°1926
Mar 2880°198956°36°16°1923
Mar 2980°199857°36°15°1941
Mar 3081°198657°37°10°1923
Mar 3182°196358°37°10°1923
Apr 182°193458°38°12°1923
Apr 283°193459°38°20°1943
Apr 382°194060°38°21°1926
Apr 485°192960°38°18°1995
Apr 587°192960°39°18°1995
Apr 685°192261°39°16°1979
Apr 782°192261°39°17°1982
Apr 885°191962°40°12°1972
Apr 983°192262°40°22°1976
Apr 1090°193063°40°20°1921
Apr 1190°193063°41°24°1920
Apr 1286°194164°41°18°1950
Apr 1384°193864°42°18°1920
Apr 1483°201064°42°20°1940
Apr 1585°193864°42°21°1935
Apr 1683°193064°42°23°1928
Apr 1785°192465°43°25°1983
Apr 1885°194165°43°22°1953
Apr 1984°192765°43°20°1926
Apr 2085°194865°43°25°1981
Apr 2187°194665°43°27°1978
Apr 2286°191766°44°25°1986
Apr 2391°192566°44°25°1936
Apr 2487°196066°44°23°1919
Apr 2590°194866°45°27°1919
Apr 2691°194866°45°25°1933
Apr 2787°198666°45°22°1934
Apr 2887°194267°46°26°1976
Apr 2992°194267°46°28°1976
Apr 3089°194268°46°27°1943
May 190°195968°47°29°1961
May 291°193868°48°30°1929
May 393°194969°48°28°1957
May 493°194969°48°30°1957
May 593°194970°49°31°1976
May 689°193970°49°30°1968
May 790°193070°50°26°1947
May 892°193070°50°25°1947
May 993°193671°50°24°1966
May 1097°193671°50°28°1945
May 1191°193671°51°27°1938
May 1288°194472°51°31°1938
May 1391°196272°51°30°1928
May 1490°196272°51°33°1920
May 1593°196272°52°32°1959
May 1693°196272°52°32°2016
May 1794°196273°52°33°1919
May 1893°196273°52°34°2002
May 1994°193474°53°35°1929
May 2092°193474°53°31°1954
May 2194°194174°54°31°2002
May 2295°193975°54°30°1924
May 2392°192175°55°32°1931
May 2494°193976°55°28°1925
May 2595°193976°55°36°1934
May 2692°194176°56°32°1925
May 2793°194177°56°37°1928
May 2894°194177°56°37°1965
May 2993°191977°56°33°1930
May 3096°193777°57°35°1930
May 3199°193478°57°34°1928
Jun 196°193478°57°39°1948
Jun 296°193478°58°38°1929
Jun 397°194978°58°36°1929
Jun 497°192579°58°38°1945
Jun 598°192579°59°38°1945
Jun 698°192579°59°38°1927
Jun 798°193379°59°39°1930
Jun 8100°193379°59°38°1931
Jun 995°193380°60°40°1977
Jun 1094°191980°60°41°1966
Jun 1199°193381°60°37°1972
Jun 1295°194381°61°41°1980
Jun 1396°192182°61°40°1933
Jun 1496°192082°61°38°1933
Jun 1596°191882°62°36°1917
Jun 1698°193482°62°40°1917
Jun 1799°193682°62°41°1980
Jun 18100°194482°62°42°1980
Jun 1999°193383°62°45°1970
Jun 20101°193383°62°44°1980
Jun 21102°193383°62°42°1961
Jun 2299°193083°62°38°1918
Jun 23100°193483°62°44°1918
Jun 2498°193383°62°42°1972
Jun 2597°193183°62°44°1979
Jun 2699°194483°62°43°1926
Jun 27103°194483°63°45°1927
Jun 28104°194483°63°47°1923
Jun 29100°193384°63°42°1923
Jun 30101°193384°63°45°1937
Jul 198°193184°63°40°1988
Jul 2100°193184°63°45°1924
Jul 399°194984°63°47°1924
Jul 4100°193484°63°46°1927
Jul 5100°192184°63°45°1979
Jul 699°194484°63°44°1972
Jul 7101°201284°63°48°1972
Jul 8106°193684°63°46°1918
Jul 9106°193684°63°46°1963
Jul 10108°193684°64°43°1945
Jul 11106°193684°64°46°1945
Jul 12104°193684°64°51°1917
Jul 13104°193685°64°45°1926
Jul 14109°193685°64°41°1930
Jul 15100°193684°64°45°1945
Jul 16101°193184°64°49°1933
Jul 17101°193084°64°45°1976
Jul 18104°193084°64°45°1976
Jul 19108°193484°64°43°1947
Jul 20111°193484°64°45°1970
Jul 21109°193484°64°45°1944
Jul 22104°193384°64°45°1947
Jul 23107°193484°64°48°1947
Jul 24110°193484°64°50°1932
Jul 25107°193484°63°48°1946
Jul 26103°193684°63°45°1962
Jul 27105°193084°63°47°1920
Jul 28101°194084°63°48°1925
Jul 29100°194084°63°47°1965
Jul 30102°194084°62°48°1981
Jul 3198°193184°62°49°1936
Aug 1101°193084°62°50°1919
Aug 2103°193084°62°41°1920
Aug 3105°193084°62°45°1929
Aug 4103°191884°62°43°1929
Aug 5103°191884°62°44°1997
Aug 6100°191883°62°44°1997
Aug 797°192483°62°46°1997
Aug 8101°193083°62°40°1976
Aug 999°194983°62°43°1976
Aug 10102°194483°62°45°1972
Aug 11101°194483°61°44°1930
Aug 12104°194483°61°47°1982
Aug 13102°193683°61°45°1941
Aug 1497°195183°61°43°1964
Aug 1598°194483°61°42°1979
Aug 1699°194482°61°44°1979
Aug 1798°192282°61°45°1976
Aug 18100°194082°61°44°1943
Aug 19103°193682°61°46°1977
Aug 2098°198382°61°43°1950
Aug 21102°193683°61°45°1932
Aug 22102°193683°61°40°1923
Aug 2397°200783°61°42°1923
Aug 2499°194882°61°43°1927
Aug 25100°194882°60°42°1945
Aug 26100°194882°60°44°1945
Aug 27104°194882°60°44°1919
Aug 28100°194882°60°37°1965
Aug 29100°195382°60°37°1946
Aug 30105°195182°60°40°1976
Aug 3199°193282°60°40°1976
Sep 1100°193282°60°40°1919
Sep 299°195382°59°44°1919
Sep 396°192581°59°39°1997
Sep 497°195481°58°39°1997
Sep 598°195480°58°40°1962
Sep 6101°193980°57°36°1924
Sep 7103°193980°57°39°1951
Sep 8100°193980°56°38°1988
Sep 996°192579°56°38°1943
Sep 1099°196479°56°31°1917
Sep 1196°193979°56°35°1917
Sep 12102°193978°55°34°1975
Sep 13104°193978°55°32°1923
Sep 14100°193978°54°33°1923
Sep 15101°193978°54°35°1923
Sep 1694°193677°54°35°1937
Sep 1798°194877°53°34°1959
Sep 1892°192577°53°34°1929
Sep 1994°192576°53°36°1937
Sep 2095°194076°52°32°1927
Sep 2196°194076°52°30°1918
Sep 2294°201075°52°30°1976
Sep 2395°193075°51°31°1950
Sep 2492°193474°51°28°1928
Sep 2590°192374°50°32°1943
Sep 2691°193374°50°26°1928
Sep 2794°193973°50°27°1942
Sep 2898°195373°50°29°1942
Sep 2993°195372°49°30°1949
Sep 3092°192772°49°30°1946
Oct 192°201972°49°29°1946
Oct 291°201972°48°27°1975
Oct 390°192271°48°27°1975
Oct 490°192271°48°27°1923
Oct 590°192270°47°27°1923
Oct 691°193970°47°25°1935
Oct 791°193970°46°24°1952
Oct 891°193969°46°23°1917
Oct 988°194969°46°26°1925
Oct 1088°194968°45°27°1976
Oct 1190°192868°45°24°1964
Oct 1288°192867°44°25°1921
Oct 1391°192866°44°23°1988
Oct 1485°192466°43°22°1937
Oct 1587°192865°43°27°1976
Oct 1686°192865°43°23°1982
Oct 1787°193864°42°22°1982
Oct 1883°195364°42°17°1976
Oct 1985°195363°42°17°1976
Oct 2083°195362°42°22°1952
Oct 2185°194762°41°15°1952
Oct 2285°194762°41°21°1969
Oct 2382°196361°41°18°1981
Oct 2482°196361°41°17°1981
Oct 2583°196360°40°20°1962
Oct 2685°192760°40°19°1942
Oct 2783°192760°40°21°1976
Oct 2883°192759°40°12°1925
Oct 2985°192759°39°12°1976
Oct 3083°195058°39°16°1976
Oct 3181°193358°38°21°1949
Nov 180°193858°38°17°1934
Nov 282°194657°38°15°1951
Nov 378°193557°37°16°1991
Nov 478°198756°37°12°1991
Nov 578°193856°36°12°1991
Nov 681°193856°36°13°1930
Nov 777°194555°35°14°1971
Nov 879°202054°35°14°1991
Nov 978°202054°34°15°1973
Nov 1078°202053°34°15°1926
Nov 1177°194953°34°14°2019
Nov 1276°195552°34°6°2019
Nov 1377°193152°34°9°1976
Nov 1474°193152°34°9°1976
Nov 1578°193152°33°7°1933
Nov 1679°195851°33°10°1976
Nov 1776°192851°33°10°1959
Nov 1877°193050°33°8°2014
Nov 1974°193150°33°14°1951
Nov 2076°193450°32°7°2014
Nov 2179°193150°32°12°2000
Nov 2276°193150°32°10°1937
Nov 2370°193149°32°4°1950
Nov 2467°197349°32°3°1950
Nov 2568°192749°32°12°1950
Nov 2667°199048°32°-2°1930
Nov 2773°199048°32°0°1930
Nov 2872°192747°31°6°1929
Nov 2972°193446°30°-6°1958
Nov 3067°192146°30°2°1976
Dec 166°196245°30°3°1924
Dec 271°198245°30°-2°1929
Dec 373°198244°29°1°1976
Dec 468°193344°29°4°1976
Dec 571°199844°29°1°2007
Dec 671°195643°28°-2°1977
Dec 768°192243°28°-1°1977
Dec 865°194642°28°-12°1917
Dec 969°197142°28°-11°1917
Dec 1071°193142°27°-22°1917
Dec 1169°201542°27°-8°1917
Dec 1266°192641°27°-5°1962
Dec 1364°192741°27°-4°1960
Dec 1465°193341°27°-14°1917
Dec 1563°194841°27°-10°1951
Dec 1669°192441°26°-17°1989
Dec 1764°196741°26°-14°1989
Dec 1867°198441°26°-14°1989
Dec 1968°194940°26°-9°1963
Dec 2067°196740°26°-8°1963
Dec 2165°194140°25°-24°1989
Dec 2265°193340°25°-23°1989
Dec 2363°193140°25°-20°1989
Dec 2465°193240°25°-19°1989
Dec 2564°193240°25°-14°1983
Dec 2668°201640°25°-12°1933
Dec 2768°202540°25°-5°1925
Dec 2864°200839°25°-12°1924
Dec 2967°198439°25°-15°1917
Dec 3068°195139°24°-8°1983
Dec 3160°199239°24°-3°1976
Forecast & records → Wilmington station On This Day → national almanac
Data: NOAA/NWS Threaded Extremes (threadex) · normals 1991–2020 · part of Weather Trader