Graham Muni climate by month
Averages and records for each calendar month at Graham Muni, United States, from 2011 to 2026. The warmest month is August, averaging 36.8°C; the coolest is January at 13.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.9°C | −0.7°C | 30.0°C11 January 2023 | −16.6°C17 January 2018 | 14 / 15 |
| February | 17.0°C | 2.2°C | 35.0°C26 February 2024 | −13.2°C19 February 2025 | 12 / 14 |
| March | 22.0°C | 7.4°C | 37.2°C22 March 2026 | −11.6°C3 March 2014 | 14 / 14 |
| April | 25.3°C | 11.3°C | 37.2°C25 April 2012 | −3.8°C15 April 2014 | 14 / 14 |
| May | 29.3°C | 16.1°C | 38.9°C31 May 2018 | 0.6°C1 May 2017 | 13 / 14 |
| June | 33.7°C | 21.2°C | 42.2°C20 June 2023 | 11.1°C10 June 2020 | 13 / 14 |
| July | 36.4°C | 23.0°C | 43.9°C19 July 2022 | 13.3°C3 July 2013 | 13 / 14 |
| August | 36.8°C | 22.8°C | 43.9°C17 August 2023 | 15.6°C2 August 2014 | 14 / 14 |
| September | 32.4°C | 18.9°C | 42.8°C8 September 2023 | 3.3°C29 September 2020 | 13 / 14 |
| October | 26.8°C | 12.0°C | 38.9°C7 October 2014 | −4.3°C31 October 2019 | 14 / 15 |
| November | 19.9°C | 5.5°C | 33.9°C2 November 2017 | −8.8°C13 November 2013 | 15 / 15 |
| December | 15.4°C | 1.7°C | 33.3°C26 December 2021 | −12.7°C19 December 2016 | 15 / 15 |
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 12 to 15 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.