Home / United States / Delaware / Wilmington Delaware · THREADEX · 1894–2026
Wilmington, DE 39.674°N, 75.606°W · station ILGthr · 133 years of record
97°F
HOTTEST JUL 15 SINCE 1997
forecast high · Jul 15
NWS NDFD forecast high temperature for Wilmington.
84° MON 7/13 90° TUE 7/14 97° WED 7/15 93° THU 7/16 92° FRI 7/17 91° SAT 7/18 85° SUN 7/19 This Day in History · Jul 15
Today ranks #3 / 112
warmest Jul 15 in 112 yrs of record
Hottest Jul 15 ever 99°F
set in 1995
Coolest Jul 15 ever 64°F
set in 1926
Hottest Jul 15 — Year by Year
Every year's high on Jul 15 at Wilmington. The forecast line shows where today lands; the ringed bar is the hottest on record.
64 82 99 1894: 96°F 1895: 80°F 1896: 92°F 1917: 82°F 1918: 88°F 1919: 78°F 1920: 87°F 1921: 86°F 1922: 76°F 1923: 82°F 1924: 85°F 1925: 84°F 1926: 64°F 1927: 91°F 1928: 78°F 1929: 83°F 1930: 78°F 1931: 89°F 1932: 91°F 1933: 78°F 1934: 92°F 1935: 90°F 1936: 90°F 1937: 86°F 1938: 87°F 1939: 86°F 1940: 79°F 1941: 79°F 1942: 90°F 1943: 89°F 1944: 82°F 1945: 77°F 1946: 79°F 1947: 84°F 1948: 81°F 1949: 87°F 1950: 71°F 1951: 88°F 1952: 94°F 1953: 92°F 1954: 86°F 1955: 94°F 1956: 85°F 1957: 89°F 1958: 88°F 1959: 78°F 1960: 78°F 1961: 81°F 1962: 86°F 1963: 88°F 1964: 86°F 1965: 84°F 1966: 82°F 1967: 81°F 1968: 83°F 1969: 87°F 1970: 85°F 1971: 85°F 1972: 91°F 1973: 83°F 1974: 91°F 1975: 84°F 1976: 80°F 1977: 93°F 1978: 82°F 1979: 91°F 1980: 88°F 1981: 85°F 1982: 90°F 1983: 97°F 1984: 91°F 1985: 92°F 1986: 86°F 1987: 77°F 1988: 93°F 1989: 82°F 1990: 87°F 1991: 86°F 1992: 97°F 1993: 87°F 1994: 90°F 1995: 99°F 1996: 89°F 1997: 99°F 1998: 86°F 1999: 95°F 2000: 79°F 2001: 84°F 2002: 87°F 2003: 80°F 2004: 78°F 2005: 86°F 2006: 80°F 2007: 93°F 2008: 84°F 2009: 86°F 2010: 89°F 2011: 86°F 2012: 82°F 2013: 95°F 2014: 89°F 2015: 82°F 2016: 93°F 2017: 88°F 2018: 82°F 2019: 87°F 2020: 87°F 2021: 92°F 2022: 89°F 2023: 90°F 2024: 92°F 2025: 90°F 97° forecast 1894 1995 2025 Forecast high · Jul 15 97°F Hottest this date since 1997 This-date record 99°F This-date rank #3 of 112
Hottest at any time since 2026 All-time record 107°F (1918) Odds to tie/break 86.0% (daily) Period of record 1894–2026
The hottest and coldest ever recorded at Wilmington in each calendar month, and for the whole 1894–2026 record — with the year each was set.
Month Record High Record Low Jan 75°F 1950 -14°F 1984 Feb 78°F 1930 -15°F 1934 Mar 86°F 1948 2°F 1984 Apr 97°F 1896 11°F 1923 May 98°F 1895 30°F 1978 Jun 102°F 1894 40°F 1945 Jul 103°F 1936 48°F 1988 Aug 107°F 1918 43°F 1982 Sep 100°F 1953 32°F 1940 Oct 98°F 2019 23°F 1936 Nov 85°F 1950 11°F 1929 Dec 75°F 1998 -7°F 1917 All-time 107°F 1918 -15°F 1934
Records set or tied at Wilmington so far this year — through Jul 11.
Record Highs in 2026 8 broke
plus 5 tied — daily record highs set this year
Monthly high record this year: Jul (103°F)
Record Lows in 2026 0 broke
plus 0 tied — daily record lows set this year
Current run 1 days
consecutive days with a high ≥ 90°F
Longest ever 16 days
record run, ended Aug 18 1895
So far in 2026 18 days
days with a high ≥ 90°F this year
Normal high & low by month, from Wilmington's own 1991–2020 record. Today's normal high: 87°F · forecast is +10° vs normal .
Jan: 41°F Jan: 25°F Feb: 44°F Feb: 27°F Mar: 52°F Mar: 34°F Apr: 64°F Apr: 43°F May: 73°F May: 53°F Jun: 82°F Jun: 63°F Jul: 87°F Jul: 68°F Aug: 85°F Aug: 66°F Sep: 78°F Sep: 59°F Oct: 67°F Oct: 47°F Nov: 56°F Nov: 37°F Dec: 46°F Dec: 30°F J F M A M J J A S O N D Sun & Daylight Today Sunrise 4:45 AM Sunset 7:30 PM Solar noon 12:08 PM Daylight 14h 45m · losing 7 min/wk
Local standard time (no DST), level horizon.
Location 39.67°N, 75.61°W Wilmington's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
Every day this year against Wilmington's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's high at Wilmington, coloured by temperature — 133 years of record, so heat waves read as warm streaks and cold snaps as blue.
How many days a year hit a given high at Wilmington — counted through Jul 15 each year, so you can see whether 2026 is running hot. Pick a threshold:
70° 75° 80° 85° 90° 95° 100° 105° 110°
18 days ≥90°F so far in 2026 — tied for the 7th most in 133 years. Normal for this point: 7 . Record: 28 in 1896.
A ready-to-share summary of Wilmington's outlook — post it, or link this page.
See Wilmington on coldestsince.com →