Yankton/Gurney Muni weather by month
Averages and records for each calendar month at Yankton/Gurney Muni, United States, from 1932 to 2026. The warmest month is July, averaging 31.2°C; the coolest is January at −0.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.7°C | −12.5°C | 18.3°C20 January 1944 | −31.6°C1 January 2018 | 25 / 25 |
| February | 0.5°C | −12.1°C | 21.1°C26 February 2024 | −33.2°C16 February 2021 | 25 / 25 |
| March | 7.8°C | −4.2°C | 33.9°C30 March 1943 | −24.9°C3 March 2019 | 25 / 25 |
| April | 15.1°C | 2.0°C | 33.3°C29 April 1934 | −16.1°C3 April 1936 | 25 / 25 |
| May | 22.1°C | 9.3°C | 41.7°C30 May 1934 | −4.4°C6 May 1944 | 25 / 26 |
| June | 27.8°C | 15.3°C | 41.7°C26 June 1936 | 2.8°C4 June 1945 | 26 / 26 |
| July | 31.2°C | 18.0°C | 46.7°C18 July 1936 | 7.2°C10 July 1945 | 26 / 27 |
| August | 29.7°C | 16.5°C | 44.4°C4 August 1934 | 5.0°C30 August 1935 | 25 / 26 |
| September | 25.5°C | 11.2°C | 40.6°C18 September 1940 | −4.4°C29 September 1945 | 24 / 26 |
| October | 18.4°C | 3.9°C | 34.4°C3 October 1938 | −11.6°C26 October 2020 | 24 / 25 |
| November | 8.2°C | −4.2°C | 28.3°C14 November 2025 | −25.6°C13 November 1940 | 24 / 25 |
| December | 2.1°C | −9.3°C | 19.4°C6 December 1939 | −27.8°C12 December 1932 | 25 / 25 |
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 24 to 26 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.