Overland Park weather by month
Measured at Olathe/New Century Arpt
Averages and records for each calendar month at Olathe/New Century Arpt, United States, from 1945 to 2026. The warmest month is July, averaging 31.7°C; the coolest is January at 3.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.8°C | −6.8°C | 23.3°C24 January 1950 | −24.4°C4 January 1959 | 53 / 53 |
| February | 6.8°C | −4.5°C | 27.2°C22 February 2017 | −26.0°C16 February 2021 | 51 / 52 |
| March | 12.6°C | 0.7°C | 34.4°C26 March 2026 | −21.6°C3 March 2014 | 53 / 53 |
| April | 19.0°C | 6.9°C | 33.3°C25 April 2012 | −7.7°C7 April 2007 | 53 / 54 |
| May | 24.1°C | 12.7°C | 35.0°C26 May 1953 | −0.6°C3 May 2005 | 54 / 54 |
| June | 29.2°C | 18.0°C | 40.0°C28 June 2012 | 6.1°C4 June 1945 | 54 / 54 |
| July | 31.7°C | 20.3°C | 45.6°C13 July 1954 | 9.4°C5 July 1997 | 54 / 54 |
| August | 31.2°C | 19.4°C | 43.9°C2 August 2011 | 8.3°C20 August 1950 | 54 / 54 |
| September | 27.0°C | 14.7°C | 41.7°C3 September 1947 | 2.2°C28 September 1951 | 53 / 54 |
| October | 20.5°C | 8.3°C | 35.6°C5 October 1963 | −5.0°C26 October 1957 | 52 / 52 |
| November | 12.6°C | 1.2°C | 27.2°C2 November 1964 | −15.6°C17 November 1959 | 53 / 53 |
| December | 6.1°C | −4.3°C | 23.3°C15 December 2021 | −23.9°C31 December 1968 | 52 / 53 |
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 51 to 54 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.