Ft Greely/Allen Fld climate by month
Averages and records for each calendar month at Ft Greely/Allen Fld, United States, from 1917 to 2026. The warmest month is July, averaging 20.8°C; the coolest is January at −15.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −15.3°C | −23.3°C | 12.2°C16 January 2009 | −52.8°C30 January 1947 | 83 / 87 |
| February | −10.5°C | −19.9°C | 10.6°C24 February 1943 | −51.1°C2 February 1947 | 82 / 87 |
| March | −4.7°C | −16.6°C | 14.4°C18 March 1981 | −45.0°C15 March 1964 | 82 / 87 |
| April | 5.1°C | −6.2°C | 22.2°C30 April 1979 | −38.3°C2 April 1944 | 83 / 88 |
| May | 14.0°C | 3.0°C | 32.2°C28 May 1947 | −18.3°C4 May 1945 | 83 / 87 |
| June | 19.6°C | 8.8°C | 33.3°C15 June 1969 | −3.3°C5 June 2006 | 84 / 88 |
| July | 20.8°C | 10.6°C | 32.8°C4 July 1958 | 0.0°C1 July 1971 | 84 / 87 |
| August | 18.1°C | 7.8°C | 32.2°C6 August 1994 | −5.6°C24 August 1948 | 83 / 88 |
| September | 11.5°C | 2.1°C | 26.1°C1 September 1963 | −18.9°C27 September 1983 | 80 / 87 |
| October | 0.3°C | −7.2°C | 23.3°C2 October 2003 | −39.4°C31 October 1975 | 82 / 85 |
| November | −10.0°C | −17.6°C | 11.1°C6 November 1979 | −43.9°C27 November 1986 | 82 / 87 |
| December | −14.2°C | −22.2°C | 12.8°C11 December 1985 | −52.2°C14 December 1946 | 83 / 87 |
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 80 to 84 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.