Bloomington/Monroe Cnty climate by month
Averages and records for each calendar month at Bloomington/Monroe Cnty, United States, from 1998 to 2026. The warmest month is July, averaging 29.7°C; the coolest is January at 3.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.7°C | −5.7°C | 20.6°C1 January 2006 | −30.0°C31 January 2004 | 27 / 28 |
| February | 6.3°C | −4.4°C | 24.4°C26 February 2024 | −26.6°C20 February 2015 | 27 / 28 |
| March | 12.9°C | 1.0°C | 30.6°C22 March 2026 | −18.2°C6 March 2015 | 28 / 29 |
| April | 19.2°C | 6.4°C | 30.6°C15 April 2006 | −6.6°C3 April 2013 | 29 / 29 |
| May | 24.0°C | 11.8°C | 33.3°C27 May 2012 | −1.6°C9 May 2020 | 28 / 29 |
| June | 28.3°C | 16.7°C | 39.4°C28 June 2012 | 2.8°C1 June 2003 | 29 / 29 |
| July | 29.7°C | 18.3°C | 41.1°C7 July 2012 | 8.3°C6 July 2001 | 29 / 29 |
| August | 29.4°C | 17.0°C | 38.3°C22 August 2007 | 6.7°C12 August 2004 | 28 / 29 |
| September | 26.5°C | 12.9°C | 37.2°C3 September 2011 | 0.0°C22 September 1999 | 28 / 29 |
| October | 19.7°C | 7.0°C | 33.9°C1 October 2019 | −5.5°C31 October 2023 | 28 / 28 |
| November | 12.6°C | 1.3°C | 27.8°C1 November 2016 | −14.9°C13 November 2019 | 28 / 28 |
| December | 6.2°C | −2.8°C | 22.8°C6 December 1998 | −28.3°C25 December 2004 | 28 / 28 |
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 27 to 29 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.