Raleigh-Durham Intl climate by month
Averages and records for each calendar month at Raleigh-Durham Intl, United States, from 1944 to 2026. The warmest month is July, averaging 31.9°C; the coolest is January at 10.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 10.5°C | −0.8°C | 26.7°C30 January 2002 | −22.8°C21 January 1985 | 82 / 82 |
| February | 12.5°C | 0.3°C | 29.4°C23 February 2023 | −17.8°C5 February 1996 | 82 / 82 |
| March | 17.0°C | 4.1°C | 33.3°C17 March 1945 | −11.7°C6 March 1960 | 82 / 82 |
| April | 22.5°C | 8.7°C | 35.0°C23 April 1980 | −5.0°C9 April 1972 | 82 / 82 |
| May | 26.3°C | 13.5°C | 36.1°C31 May 1953 | −1.7°C2 May 1963 | 82 / 83 |
| June | 30.3°C | 18.0°C | 40.6°C29 June 2012 | 3.3°C8 June 1977 | 83 / 83 |
| July | 31.9°C | 20.4°C | 41.1°C5 July 2024 | 8.9°C2 July 1975 | 83 / 83 |
| August | 30.9°C | 19.8°C | 40.6°C18 August 1988 | 7.8°C30 August 1965 | 83 / 83 |
| September | 27.7°C | 16.3°C | 40.0°C6 September 1954 | 2.8°C26 September 1950 | 82 / 83 |
| October | 22.4°C | 9.5°C | 37.8°C3 October 2019 | −7.2°C27 October 1962 | 82 / 82 |
| November | 17.0°C | 4.1°C | 31.1°C1 November 1950 | −11.7°C25 November 1970 | 82 / 82 |
| December | 12.0°C | 0.4°C | 27.2°C10 December 2007 | −15.6°C13 December 1962 | 82 / 82 |
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 82 to 83 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.