Rock Hill weather by month
Measured at Rock Hill/Bryant Fld
Averages and records for each calendar month at Rock Hill/Bryant Fld, United States, from 1999 to 2026. The warmest month is July, averaging 32.4°C; the coolest is January at 11.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 11.5°C | −0.7°C | 25.6°C29 January 2002 | −15.6°C24 January 2003 | 27 / 27 |
| February | 14.1°C | 1.3°C | 27.2°C27 February 2011 | −16.1°C2 February 2026 | 28 / 28 |
| March | 18.5°C | 4.9°C | 31.1°C28 March 2020 | −8.2°C16 March 2017 | 28 / 28 |
| April | 23.3°C | 9.2°C | 32.8°C10 April 2001 | −5.5°C8 April 2007 | 28 / 28 |
| May | 26.9°C | 14.2°C | 35.6°C28 May 2019 | 2.2°C12 May 2020 | 27 / 28 |
| June | 30.9°C | 18.8°C | 38.9°C9 June 2008 | 8.9°C1 June 2024 | 27 / 28 |
| July | 32.4°C | 20.9°C | 40.0°C31 July 1999 | 13.3°C2 July 2008 | 28 / 28 |
| August | 31.6°C | 20.3°C | 40.0°C9 August 2007 | 12.2°C7 August 2004 | 28 / 28 |
| September | 28.4°C | 16.9°C | 36.7°C3 September 2026 | 5.0°C23 September 1999 | 25 / 28 |
| October | 23.1°C | 10.0°C | 37.2°C3 October 2019 | −2.2°C28 October 2001 | 26 / 27 |
| November | 17.7°C | 4.1°C | 28.3°C2 November 2003 | −9.3°C19 November 2014 | 27 / 27 |
| December | 13.1°C | 1.0°C | 26.7°C10 December 2007 | −13.2°C24 December 2022 | 27 / 27 |
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 25 to 28 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.