Mildenhall climate by month
Averages and records for each calendar month at Mildenhall, United Kingdom, from 1950 to 2026. The warmest month is July, averaging 21.4°C; the coolest is January at 5.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.6°C | 0.5°C | 14.4°C15 January 1954 | −15.0°C23 January 1963 | 16 / 16 |
| February | 7.4°C | 1.6°C | 17.4°C25 February 2026 | −11.7°C25 February 1963 | 16 / 17 |
| March | 10.2°C | 2.4°C | 20.6°C25 March 1953 | −7.8°C12 March 1958 | 16 / 16 |
| April | 13.1°C | 4.2°C | 24.7°C30 April 2025 | −4.4°C2 April 1958 | 15 / 15 |
| May | 16.5°C | 6.9°C | 33.1°C26 May 2026 | −1.1°C7 May 1957 | 14 / 15 |
| June | 20.4°C | 10.3°C | 37.0°C26 June 2026 | −0.6°C3 June 1962 | 15 / 15 |
| July | 21.4°C | 12.0°C | 34.6°C29 July 2026 | 4.4°C27 July 1963 | 15 / 16 |
| August | 21.1°C | 11.8°C | 35.0°C13 August 2026 | 5.6°C24 August 1966 | 16 / 16 |
| September | 18.2°C | 9.6°C | 28.3°C1 September 1954 | 0.6°C20 September 1952 | 15 / 17 |
| October | 14.5°C | 7.1°C | 25.6°C2 October 1959 | −3.3°C24 October 1951 | 14 / 15 |
| November | 9.5°C | 3.7°C | 17.4°C13 November 2025 | −6.7°C25 November 1952 | 15 / 16 |
| December | 6.9°C | 1.5°C | 15.0°C7 December 2025 | −12.8°C29 December 1962 | 16 / 16 |
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 14 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.