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National Cold Records
Ohio · THREADEX · 1917–2026

Wilmington, OH

39.431°N, 83.777°W · station ILNthr · 110 years of record
60°F
forecast low · Sep 8

7-Day Forecast

NWS NDFD forecast low temperature for Wilmington.
72°WED9/274°THU9/372°FRI9/468°SAT9/562°SUN9/661°MON9/760°TUE9/8

This Day in History

Every year's low on each of the next 7 forecast dates at Wilmington — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.

Ranks

#70 / 107
coldest Sep 8 in 107 yrs of record

Coldest Sep 8 ever

39°F
set in 1951

Mildest Sep 8 ever

72°F
set in 1939
Forecast low 60°F — 70th coldest Sep 8 of 107 years · record 39°F (1951) · coldest since 2025.
1917: 59°F1918: 49°F1919: 60°F1920: 50°F1921: 57°F1922: 64°F1923: 56°F1924: 45°F1925: 60°F1926: 54°F1927: 66°F1928: 46°F1929: 63°F1930: 60°F1931: 52°F1932: 43°F1933: 66°F1934: 55°F1935: 52°F1936: 64°F1937: 58°F1938: 64°F1939: 72°F1940: 56°F1941: 65°F1942: 67°F1943: 48°F1944: 43°F1945: 67°F1946: 57°F1947: 62°F1948: 65°F1949: 51°F1950: 58°F1951: 39°F1952: 58°F1953: 43°F1954: 64°F1955: 48°F1956: 42°F1957: 45°F1958: 56°F1959: 67°F1960: 57°F1961: 61°F1962: 47°F1963: 56°F1964: 56°F1965: 61°F1966: 46°F1967: 52°F1968: 49°F1969: 61°F1970: 66°F1971: 65°F1972: 54°F1973: 52°F1975: 44°F1976: 39°F1977: 56°F1978: 58°F1979: 51°F1980: 59°F1982: 56°F1983: 51°F1984: 40°F1985: 70°F1986: 41°F1987: 64°F1988: 39°F1989: 68°F1990: 65°F1991: 54°F1992: 68°F1993: 55°F1994: 52°F1995: 62°F1996: 67°F1997: 56°F1998: 42°F1999: 51°F2000: 50°F2001: 68°F2002: 59°F2003: 56°F2004: 63°F2005: 52°F2006: 54°F2007: 68°F2008: 56°F2009: 58°F2010: 56°F2011: 57°F2012: 64°F2013: 63°F2014: 51°F2015: 64°F2016: 66°F2017: 47°F2018: 59°F2019: 52°F2020: 61°F2021: 55°F2022: 54°F2023: 65°F2024: 48°F2025: 43°F60° forecast35404550556065707519201930194019501960197019801990200020102020
📖 Wilmington's full Climate Almanac →

The Numbers

Forecast low · Sep 860°F
Coldest this date since2025
This-date record39°F
This-date rank#70 of 107
Coldest at any time since2026
All-time record-25°F (1982)
Odds to tie/break0.0% (daily)
Period of record1917–2026

Record Book

The hottest and coldest ever recorded at Wilmington in each calendar month, and for the whole 1917–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan74°FJan 25, 1950-25°FJan 17, 1982
Feb76°FFeb 10, 1932-20°FFeb 3, 1985
Mar88°FMar 25, 1929-10°FMar 10, 1984
Apr92°FApr 30, 194210°FApr 1, 1923
May97°FMay 10, 193624°FMay 10, 1966
Jun104°FJun 28, 194436°FJun 16, 1917
Jul111°FJul 21, 193440°FJul 1, 1988
Aug105°FAug 4, 193037°FAug 30, 1946
Sep104°FSep 14, 193926°FSep 26, 1928
Oct92°FOct 1, 192712°FOct 29, 1925
Nov82°FNov 3, 1946-6°FNov 30, 1958
Dec73°FDec 4, 1982-24°FDec 22, 1989
All-time111°FJul 21, 1934-25°FJan 17, 1982

2026 Records So Far

Records set or tied at Wilmington so far this year — through Aug 30.

Record Highs in 2026

0 broke
plus 1 tied — daily record highs set this year

Record Lows in 2026

1 broke
plus 0 tied — daily record lows set this year

Record Warm Nights & Cold Days

Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.

Warmest low ever

80°F
record high minimum — the night it never cooled · Jul 21, 1934

Coldest high ever

-10°F
record low maximum — the day it never warmed · Jan 21, 1985
MonthWarmest lowColdest high
Jan58°FJan 12, 2005-10°FJan 21, 1985
Feb60°FFeb 11, 19326°FFeb 4, 1996
Mar65°FMar 31, 199812°FMar 2, 1980
Apr68°FApr 25, 192531°FApr 7, 1982
May72°FMay 12, 200041°FMay 2, 1940
Jun76°FJun 29, 193453°FJun 13, 1985
Jul80°FJul 21, 193465°FJul 3, 2016
Aug78°FAug 5, 193063°FAug 20, 1927
Sep72°FSep 8, 193948°FSep 30, 1924
Oct70°FOct 4, 198635°FOct 28, 1976
Nov62°FNov 1, 192912°FNov 30, 1929
Dec61°FDec 3, 1982-9°FDec 25, 1983
All-time80°FJul 21, 1934-10°FJan 21, 1985

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

77 days
record run, ended Feb 12 1977

So far in 2026

64 days
days with a low ≤ 32°F this year

Climate Normals

Normal low & low by month, from Wilmington's own 1991–2020 record. Today's normal low: 57°F · forecast is +3° vs normal.
Jan: 37°FJan: 21°FFeb: 40°FFeb: 24°FMar: 51°FMar: 32°FApr: 64°FApr: 42°FMay: 73°FMay: 52°FJun: 81°FJun: 61°FJul: 84°FJul: 63°FAug: 83°FAug: 61°FSep: 77°FSep: 54°FOct: 65°FOct: 44°FNov: 52°FNov: 34°FDec: 41°FDec: 27°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:03 AM
Sunset6:06 PM
Solar noon11:35 AM
Daylight13h 03m · losing 17 min/wk
Local standard time (no DST), level horizon.

Location

39.43°N, 83.78°W

Nearby Stations

Dayton, OH40 mi NWCincinnati, OH54 mi SWColumbus, OH61 mi NEHuntington, WV98 mi SEZanesville, OH106 mi ELexington, KY106 mi SW

The Last 6 Weeks

Wilmington's observed daily low for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
Wilmington, OH — last six weeks of daily low

2026 So Far

Every day this year against Wilmington's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.
Wilmington, OH — 2026 daily low trace
Download year chart

Every Day Since 1917

Each cell is one day's low at Wilmington, coloured by temperature — 110 years of record, so heat waves read as warm streaks and cold snaps as blue.
Wilmington, OH daily low heat map 1917–2026

Days Below the Mark

How many days a year hit a given low at Wilmington — counted through Sep 8 each year, so you can see whether 2026 is running cold. Pick a threshold:
64 days ≤32°F so far in 2026 — tied for the 97th most in 110 years. Normal for this point: 74. Record: 96 in 1976.

Share Card

A ready-to-share summary of Wilmington's outlook — post it, or link this page.
Wilmington, OH cold share card
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