Madison/Dane Cnty Rgnl climate by month
Averages and records for each calendar month at Madison/Dane Cnty Rgnl, United States, from 1939 to 2026. The warmest month is July, averaging 28.3°C; the coolest is January at −3.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.0°C | −12.2°C | 16.7°C26 January 1944 | −38.3°C30 January 1951 | 87 / 87 |
| February | −0.5°C | −10.4°C | 21.1°C27 February 2024 | −33.9°C3 February 1996 | 87 / 87 |
| March | 6.0°C | −4.4°C | 28.3°C21 March 2012 | −33.9°C1 March 1962 | 87 / 87 |
| April | 14.1°C | 1.9°C | 34.4°C22 April 1980 | −17.8°C7 April 1982 | 87 / 87 |
| May | 20.6°C | 7.6°C | 35.0°C27 May 2018 | −7.2°C1 May 1978 | 87 / 87 |
| June | 26.0°C | 13.2°C | 38.3°C20 June 1988 | −0.6°C10 June 1972 | 87 / 87 |
| July | 28.3°C | 15.8°C | 40.0°C10 July 1976 | 2.2°C6 July 1965 | 87 / 87 |
| August | 27.0°C | 14.7°C | 38.9°C16 August 1988 | 1.7°C29 August 1965 | 87 / 87 |
| September | 22.7°C | 10.0°C | 37.2°C1 September 1953 | −3.9°C29 September 1949 | 86 / 87 |
| October | 16.0°C | 4.1°C | 32.2°C6 October 1963 | −10.6°C30 October 1988 | 87 / 87 |
| November | 7.1°C | −2.3°C | 25.0°C1 November 1944 | −22.2°C25 November 1950 | 87 / 87 |
| December | −0.2°C | −8.7°C | 20.0°C15 December 2021 | −31.7°C19 December 1983 | 87 / 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 86 to 87 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.