Philadelphia/NE Arpt climate by month
Averages and records for each calendar month at Philadelphia/NE Arpt, United States, from 1945 to 2026. The warmest month is July, averaging 30.2°C; the coolest is January at 4.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.3°C | −4.2°C | 22.8°C6 January 2007 | −21.1°C17 January 1982 | 69 / 69 |
| February | 5.8°C | −3.4°C | 26.1°C21 February 2018 | −20.0°C12 February 1979 | 66 / 69 |
| March | 11.0°C | 0.8°C | 31.1°C30 March 1998 | −13.3°C19 March 1967 | 69 / 69 |
| April | 17.4°C | 5.9°C | 33.9°C18 April 1976 | −7.2°C7 April 1982 | 69 / 69 |
| May | 22.8°C | 11.4°C | 36.7°C19 May 2026 | −1.7°C1 May 1978 | 69 / 70 |
| June | 27.7°C | 16.7°C | 37.8°C24 June 2025 | 4.4°C7 June 1958 | 69 / 71 |
| July | 30.2°C | 19.7°C | 40.6°C22 July 2011 | 9.4°C3 July 1957 | 70 / 71 |
| August | 29.1°C | 18.8°C | 39.4°C9 August 2001 | 6.7°C29 August 1986 | 70 / 70 |
| September | 25.4°C | 14.7°C | 37.2°C10 September 1983 | 1.1°C27 September 1957 | 70 / 71 |
| October | 19.1°C | 8.1°C | 36.1°C2 October 2019 | −4.4°C31 October 1966 | 70 / 70 |
| November | 12.9°C | 2.9°C | 27.8°C1 November 2024 | −9.4°C30 November 1976 | 69 / 70 |
| December | 6.8°C | −1.7°C | 25.0°C7 December 1998 | −19.4°C25 December 1980 | 68 / 68 |
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 66 to 70 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.