Klawock Arpt climate by month
Averages and records for each calendar month at Klawock Arpt, United States, from 1997 to 2026. The warmest month is August, averaging 18.4°C; the coolest is December at 4.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.9°C | 0.2°C | 17.8°C14 January 2018 | −25.6°C31 January 1998 | 28 / 29 |
| February | 5.3°C | −0.8°C | 14.4°C13 February 2004 | −26.7°C1 February 1998 | 28 / 29 |
| March | 6.6°C | −0.2°C | 21.7°C31 March 2016 | −22.2°C11 March 1998 | 29 / 29 |
| April | 10.3°C | 1.6°C | 27.2°C24 April 2005 | −12.2°C6 April 1998 | 28 / 29 |
| May | 13.8°C | 5.2°C | 30.0°C18 May 2023 | −2.8°C4 May 2003 | 28 / 29 |
| June | 16.3°C | 8.5°C | 33.3°C20 June 2004 | 0.6°C1 June 1999 | 28 / 29 |
| July | 17.9°C | 10.8°C | 34.4°C4 July 1997 | 3.9°C11 July 1997 | 29 / 30 |
| August | 18.4°C | 11.0°C | 31.1°C14 August 2026 | 2.8°C19 August 2019 | 28 / 29 |
| September | 15.7°C | 8.5°C | 28.3°C5 September 2017 | −2.8°C20 September 1997 | 26 / 30 |
| October | 11.2°C | 4.8°C | 20.0°C6 October 2022 | −16.7°C25 October 1997 | 27 / 29 |
| November | 6.7°C | 1.5°C | 15.6°C9 November 2025 | −20.0°C19 November 1997 | 27 / 28 |
| December | 4.5°C | −0.4°C | 18.9°C11 December 2005 | −19.4°C6 December 1997 | 26 / 29 |
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 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.