Burlington/SE Iowa Rgnl climate by month
Averages and records for each calendar month at Burlington/SE Iowa Rgnl, United States, from 1897 to 2026. The warmest month is July, averaging 30.4°C; the coolest is January at 0.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 0.3°C | −9.2°C | 21.1°C31 January 1989 | −31.1°C14 January 1957 | 121 / 123 |
| February | 2.6°C | −7.3°C | 25.0°C27 February 2024 | −32.8°C13 February 1905 | 124 / 124 |
| March | 9.6°C | −1.2°C | 31.1°C22 March 1907 | −25.0°C5 March 1960 | 124 / 124 |
| April | 17.0°C | 5.1°C | 33.9°C10 April 1930 | −10.6°C5 April 1920 | 123 / 123 |
| May | 23.0°C | 11.2°C | 39.4°C31 May 1934 | −3.3°C4 May 1907 | 123 / 123 |
| June | 28.1°C | 16.5°C | 40.6°C27 June 1934 | 3.9°C8 June 1913 | 119 / 121 |
| July | 30.4°C | 18.8°C | 43.9°C14 July 1936 | 7.8°C30 July 1971 | 121 / 122 |
| August | 29.3°C | 17.6°C | 43.3°C8 August 1934 | 5.0°C20 August 1950 | 122 / 122 |
| September | 25.4°C | 13.2°C | 39.4°C5 September 1899 | −5.0°C30 September 1899 | 119 / 122 |
| October | 18.8°C | 6.8°C | 35.0°C13 October 1899 | −12.2°C30 October 1925 | 122 / 123 |
| November | 10.0°C | −0.3°C | 30.0°C17 November 1899 | −18.9°C26 November 1898 | 122 / 123 |
| December | 2.6°C | −6.3°C | 22.8°C4 December 1998 | −30.0°C23 December 1989 | 123 / 123 |
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 119 to 124 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.