Phoenix/Sky Harbor Intl climate by month
Averages and records for each calendar month at Phoenix/Sky Harbor Intl, United States, from 1933 to 2026. The warmest month is July, averaging 41.1°C; the coolest is January at 19.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 19.2°C | 5.7°C | 31.1°C19 January 1971 | −8.3°C5 January 1950 | 88 / 88 |
| February | 21.4°C | 7.4°C | 33.3°C27 February 1986 | −5.6°C12 February 1948 | 90 / 90 |
| March | 24.8°C | 10.1°C | 40.6°C19 March 2026 | −3.9°C4 March 1966 | 89 / 89 |
| April | 29.5°C | 13.8°C | 40.6°C20 April 1989 | 1.1°C10 April 1935 | 88 / 88 |
| May | 34.4°C | 18.4°C | 45.0°C26 May 1951 | 4.4°C8 May 1965 | 89 / 89 |
| June | 39.8°C | 23.4°C | 50.0°C26 June 1990 | 10.0°C17 June 1944 | 89 / 89 |
| July | 41.1°C | 27.5°C | 49.4°C28 July 1995 | 16.1°C2 July 1941 | 88 / 88 |
| August | 40.0°C | 26.8°C | 47.8°C7 August 2025 | 15.6°C18 August 1938 | 88 / 88 |
| September | 37.5°C | 23.3°C | 47.8°C1 September 1950 | 8.3°C20 September 1965 | 87 / 88 |
| October | 31.5°C | 16.6°C | 45.0°C1 October 2024 | 1.1°C30 October 1971 | 86 / 86 |
| November | 24.3°C | 9.7°C | 37.2°C5 November 2020 | −3.9°C25 November 1938 | 87 / 87 |
| December | 19.4°C | 5.9°C | 31.1°C10 December 1950 | −5.6°C5 December 1948 | 88 / 88 |
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 86 to 90 years each.
See what Phoenix/Sky Harbor Intl is doing right now
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.