Alabaster/Shelby Cnty climate by month
Averages and records for each calendar month at Alabaster/Shelby Cnty, United States, from 1995 to 2026. The warmest month is July, averaging 32.6°C; the coolest is January at 13.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.1°C | 1.6°C | 26.7°C1 January 2022 | −12.8°C18 January 1997 | 31 / 31 |
| February | 15.9°C | 4.0°C | 28.3°C22 February 2023 | −15.6°C5 February 1996 | 31 / 31 |
| March | 20.2°C | 7.7°C | 30.6°C15 March 2016 | −10.0°C9 March 1996 | 31 / 31 |
| April | 24.1°C | 11.1°C | 32.2°C18 April 2006 | −2.2°C10 April 1996 | 32 / 32 |
| May | 27.9°C | 16.0°C | 35.6°C24 May 1996 | 2.8°C5 May 1997 | 32 / 32 |
| June | 31.2°C | 20.0°C | 40.6°C29 June 2012 | 9.4°C14 June 1995 | 32 / 32 |
| July | 32.6°C | 21.8°C | 40.0°C19 July 2000 | 13.3°C4 July 1996 | 32 / 32 |
| August | 32.5°C | 21.4°C | 40.6°C17 August 2000 | 12.8°C14 August 2004 | 32 / 32 |
| September | 30.0°C | 18.4°C | 38.3°C13 September 2019 | 5.6°C23 September 1999 | 31 / 32 |
| October | 24.7°C | 11.9°C | 38.3°C3 October 2019 | −0.6°C29 October 2008 | 31 / 31 |
| November | 18.9°C | 6.1°C | 31.7°C1 November 2016 | −6.1°C11 November 2025 | 31 / 31 |
| December | 14.6°C | 3.3°C | 27.2°C7 December 1998 | −12.1°C24 December 2022 | 31 / 31 |
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 31 to 32 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.