SIOUX GATEWAY AIRPORT weather by month
Averages and records for each calendar month at SIOUX GATEWAY AIRPORT, United States, from 1940 to 2026. The warmest month is July, averaging 30.2°C; the coolest is January at −1.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.6°C | −12.6°C | 21.7°C26 January 2002 | −33.2°C2 January 2018 | 86 / 86 |
| February | 1.2°C | −9.9°C | 25.0°C26 February 2024 | −33.2°C15 February 2021 | 86 / 86 |
| March | 8.0°C | −3.7°C | 35.0°C21 March 2026 | −30.0°C5 March 1960 | 86 / 86 |
| April | 16.5°C | 3.0°C | 36.1°C22 April 1980 | −18.9°C3 April 1975 | 87 / 87 |
| May | 22.7°C | 9.6°C | 41.1°C14 May 2013 | −3.9°C3 May 1976 | 87 / 87 |
| June | 28.0°C | 15.3°C | 42.2°C21 June 1988 | 3.3°C4 June 1945 | 87 / 87 |
| July | 30.2°C | 17.8°C | 42.2°C12 July 1995 | 5.6°C30 July 1971 | 87 / 87 |
| August | 28.9°C | 16.5°C | 40.0°C3 August 1947 | 2.8°C20 August 1950 | 87 / 87 |
| September | 24.7°C | 10.9°C | 39.4°C2 September 2000 | −4.4°C29 September 1945 | 86 / 87 |
| October | 18.1°C | 4.1°C | 34.4°C2 October 1997 | −13.2°C27 October 2020 | 86 / 86 |
| November | 8.3°C | −3.6°C | 27.8°C8 November 2006 | −22.8°C14 November 1959 | 86 / 86 |
| December | 0.7°C | −9.9°C | 21.1°C1 December 1998 | −31.1°C22 December 1989 | 86 / 86 |
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.
See what SIOUX GATEWAY AIRPORT is doing right now
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.