Anchorage Intl climate by month
Averages and records for each calendar month at Anchorage Intl, United States, from 1952 to 2026. The warmest month is July, averaging 18.7°C; the coolest is January at −5.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −5.4°C | −12.4°C | 10.0°C19 January 1961 | −36.7°C5 January 1975 | 73 / 73 |
| February | −3.1°C | −10.6°C | 9.4°C27 February 2014 | −33.3°C4 February 1999 | 73 / 74 |
| March | 0.5°C | −7.9°C | 11.7°C31 March 2016 | −31.1°C7 March 1971 | 74 / 74 |
| April | 6.6°C | −1.7°C | 20.6°C29 April 2005 | −20.0°C2 April 1985 | 74 / 75 |
| May | 13.0°C | 4.0°C | 25.0°C24 May 1969 | −8.3°C10 May 1964 | 74 / 75 |
| June | 17.1°C | 8.7°C | 29.4°C14 June 1969 | 0.6°C4 June 1961 | 75 / 75 |
| July | 18.7°C | 11.1°C | 32.2°C4 July 2019 | 2.2°C1 July 1964 | 75 / 75 |
| August | 17.5°C | 10.0°C | 27.8°C6 August 1968 | −0.6°C28 August 1984 | 75 / 75 |
| September | 13.0°C | 5.6°C | 22.8°C5 September 1957 | −7.2°C24 September 1992 | 74 / 75 |
| October | 5.2°C | −1.3°C | 17.8°C9 October 2006 | −20.6°C31 October 1956 | 73 / 74 |
| November | −2.1°C | −8.5°C | 12.2°C26 November 2002 | −29.4°C17 November 1956 | 74 / 74 |
| December | −4.8°C | −11.5°C | 10.6°C9 December 2019 | −34.4°C27 December 1961 | 73 / 73 |
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 73 to 75 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.