Westerly State Arpt climate by month
Averages and records for each calendar month at Westerly State Arpt, United States, from 1999 to 2026. The warmest month is July, averaging 27.0°C; the coolest is January at 3.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.5°C | −5.1°C | 17.8°C12 January 2020 | −22.1°C16 January 2009 | 27 / 27 |
| February | 4.5°C | −4.5°C | 21.1°C16 February 2023 | −23.2°C21 February 2015 | 27 / 27 |
| March | 8.3°C | −0.8°C | 22.8°C18 March 2011 | −16.6°C1 March 2015 | 27 / 27 |
| April | 13.5°C | 3.9°C | 31.1°C26 April 2009 | −5.5°C6 April 2016 | 27 / 27 |
| May | 18.7°C | 9.2°C | 32.8°C31 May 2022 | −1.7°C1 May 2008 | 26 / 27 |
| June | 23.5°C | 14.3°C | 35.0°C25 June 2025 | 4.4°C1 June 2001 | 27 / 27 |
| July | 27.0°C | 18.0°C | 37.8°C7 July 2010 | 8.3°C12 July 2002 | 27 / 28 |
| August | 26.6°C | 17.2°C | 33.9°C30 August 2018 | 8.3°C28 August 2025 | 28 / 28 |
| September | 23.2°C | 13.3°C | 33.3°C4 September 2018 | 1.1°C21 September 2020 | 27 / 28 |
| October | 17.5°C | 7.5°C | 31.1°C2 October 2019 | −3.8°C31 October 2020 | 27 / 27 |
| November | 12.0°C | 2.1°C | 23.9°C12 November 2022 | −10.6°C25 November 2000 | 27 / 27 |
| December | 6.7°C | −1.8°C | 18.3°C25 December 2015 | −15.6°C7 December 2002 | 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 26 to 28 years each.
See what Westerly State Arpt is doing right now
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.