Champaign weather by month
Measured at Champaign/Willard Arpt
Averages and records for each calendar month at Champaign/Willard Arpt, United States, from 1997 to 2026. The warmest month is July, averaging 29.2°C; the coolest is January at 1.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.3°C | −7.6°C | 19.4°C7 January 2008 | −27.7°C16 January 2009 | 29 / 29 |
| February | 3.9°C | −6.0°C | 24.4°C26 February 2024 | −25.5°C24 February 2015 | 28 / 29 |
| March | 11.3°C | −0.2°C | 30.0°C21 March 2012 | −22.7°C6 March 2015 | 29 / 29 |
| April | 18.4°C | 5.2°C | 32.2°C30 April 2007 | −11.0°C2 April 2018 | 29 / 29 |
| May | 24.3°C | 11.5°C | 36.1°C28 May 2018 | −2.2°C3 May 2005 | 29 / 29 |
| June | 28.6°C | 16.5°C | 37.8°C14 June 2022 | 2.8°C1 June 2003 | 30 / 30 |
| July | 29.2°C | 18.0°C | 38.9°C20 July 2001 | 6.1°C2 July 2001 | 30 / 30 |
| August | 28.5°C | 16.8°C | 36.1°C2 August 2012 | 6.7°C28 August 2005 | 30 / 30 |
| September | 26.6°C | 12.8°C | 37.2°C1 September 2011 | 0.6°C25 September 2001 | 29 / 30 |
| October | 19.4°C | 6.3°C | 33.9°C7 October 2007 | −6.0°C21 October 2018 | 29 / 29 |
| November | 11.2°C | 0.2°C | 27.2°C1 November 2000 | −18.2°C12 November 2019 | 29 / 29 |
| December | 4.1°C | −4.6°C | 22.8°C3 December 2012 | −25.6°C14 December 2025 | 29 / 29 |
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 28 to 30 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.