Fort Belvoir/Davison climate by month
Averages and records for each calendar month at Fort Belvoir/Davison, United States, from 1957 to 2026. The warmest month is July, averaging 30.1°C; the coolest is January at 5.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.1°C | −5.2°C | 22.2°C23 January 1967 | −23.3°C29 January 1961 | 15 / 15 |
| February | 6.9°C | −3.5°C | 21.7°C19 February 1961 | −17.8°C9 February 1967 | 16 / 16 |
| March | 12.3°C | 0.4°C | 30.3°C11 March 2026 | −18.9°C11 March 1960 | 16 / 16 |
| April | 19.1°C | 6.2°C | 35.6°C21 April 1957 | −6.7°C1 April 1969 | 16 / 16 |
| May | 23.7°C | 11.1°C | 36.1°C29 May 1969 | −1.7°C11 May 1966 | 16 / 16 |
| June | 28.4°C | 16.1°C | 37.8°C28 June 1969 | 4.4°C1 June 1967 | 16 / 16 |
| July | 30.1°C | 19.0°C | 38.5°C4 July 2026 | 10.6°C5 July 1967 | 16 / 16 |
| August | 29.3°C | 18.2°C | 36.1°C3 August 1957 | 7.2°C15 August 1964 | 16 / 16 |
| September | 26.0°C | 14.3°C | 35.8°C1 September 2026 | 1.7°C25 September 1963 | 15 / 16 |
| October | 20.0°C | 7.1°C | 33.3°C5 October 1967 | −4.4°C27 October 1962 | 15 / 15 |
| November | 13.9°C | 2.1°C | 26.7°C5 November 1961 | −8.9°C12 November 1957 | 15 / 15 |
| December | 6.6°C | −3.3°C | 23.3°C2 December 1970 | −18.3°C23 December 1960 | 15 / 15 |
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 15 to 16 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.