Tacoma/McChord AFB weather by month
Averages and records for each calendar month at Tacoma/McChord AFB, United States, from 1946 to 2026. The warmest month is July, averaging 24.2°C; the coolest is January at 6.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 6.6°C | 0.1°C | 16.1°C30 January 1960 | −20.6°C18 January 1950 | 24 / 24 |
| February | 9.4°C | 1.3°C | 21.7°C29 February 1968 | −18.3°C1 February 1950 | 24 / 24 |
| March | 11.0°C | 1.9°C | 23.3°C26 March 1969 | −11.1°C5 March 1955 | 24 / 24 |
| April | 14.4°C | 3.8°C | 27.2°C12 April 1951 | −2.8°C8 April 1952 | 24 / 24 |
| May | 18.2°C | 6.8°C | 32.8°C21 May 1963 | −2.8°C1 May 1954 | 24 / 25 |
| June | 21.1°C | 9.9°C | 37.2°C9 June 1955 | 3.9°C15 June 1959 | 24 / 24 |
| July | 24.2°C | 11.3°C | 36.7°C27 July 1958 | 3.9°C3 July 1962 | 24 / 24 |
| August | 23.7°C | 11.3°C | 36.7°C9 August 1960 | 5.0°C22 August 1960 | 24 / 24 |
| September | 20.9°C | 9.0°C | 35.6°C7 September 1956 | −0.6°C30 September 1950 | 23 / 25 |
| October | 15.4°C | 5.8°C | 26.7°C8 October 1951 | −6.1°C14 October 1969 | 23 / 23 |
| November | 10.6°C | 3.1°C | 22.2°C4 November 1949 | −16.7°C15 November 1955 | 23 / 23 |
| December | 7.8°C | 1.7°C | 16.7°C23 December 1950 | −17.8°C30 December 1968 | 23 / 24 |
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 23 to 24 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.