Wilmington Intl climate by month
Averages and records for each calendar month at Wilmington Intl, United States, from 1948 to 2026. The warmest month is July, averaging 32.0°C; the coolest is January at 13.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.7°C | 2.0°C | 28.3°C26 January 2024 | −15.0°C21 January 1985 | 79 / 79 |
| February | 15.3°C | 3.3°C | 30.0°C23 February 2023 | −11.7°C18 February 1958 | 79 / 79 |
| March | 18.9°C | 6.6°C | 32.2°C23 March 2026 | −12.8°C4 March 1980 | 79 / 79 |
| April | 23.5°C | 11.1°C | 35.0°C7 April 1967 | −1.7°C8 April 2007 | 79 / 79 |
| May | 27.2°C | 15.9°C | 38.3°C29 May 2019 | 1.7°C2 May 1963 | 79 / 79 |
| June | 30.4°C | 20.1°C | 40.0°C27 June 1952 | 8.9°C2 June 1983 | 79 / 79 |
| July | 32.0°C | 22.4°C | 38.9°C7 July 1977 | 12.8°C2 July 1988 | 79 / 79 |
| August | 31.3°C | 21.8°C | 39.4°C1 August 1999 | 12.8°C30 August 1982 | 79 / 79 |
| September | 28.8°C | 18.9°C | 36.7°C4 September 1975 | 6.7°C24 September 1981 | 78 / 79 |
| October | 24.3°C | 12.6°C | 36.7°C3 October 2019 | −2.8°C27 October 1962 | 78 / 78 |
| November | 19.7°C | 7.0°C | 30.6°C2 November 1974 | −8.9°C26 November 1950 | 78 / 78 |
| December | 15.4°C | 3.4°C | 27.8°C7 December 1998 | −17.8°C25 December 1989 | 78 / 78 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 78 to 79 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.