Plattsburgh Intl climate by month
Averages and records for each calendar month at Plattsburgh Intl, United States, from 2007 to 2026. The warmest month is July, averaging 27.2°C; the coolest is January at −1.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −1.9°C | −11.2°C | 13.3°C9 January 2008 | −31.6°C16 January 2009 | 19 / 19 |
| February | −0.3°C | −10.9°C | 18.3°C23 February 2017 | −29.9°C4 February 2023 | 18 / 19 |
| March | 5.0°C | −5.3°C | 25.6°C22 March 2012 | −26.0°C6 March 2015 | 19 / 19 |
| April | 12.7°C | 1.0°C | 33.9°C27 April 2009 | −11.0°C5 April 2016 | 19 / 19 |
| May | 20.1°C | 7.4°C | 34.4°C26 May 2010 | −2.7°C1 May 2008 | 19 / 19 |
| June | 24.2°C | 12.3°C | 38.3°C23 June 2025 | 0.6°C1 June 2009 | 19 / 20 |
| July | 27.2°C | 15.4°C | 36.7°C21 July 2011 | 7.8°C31 July 2010 | 20 / 20 |
| August | 26.2°C | 14.3°C | 35.0°C6 August 2018 | 4.4°C20 August 2007 | 19 / 20 |
| September | 22.1°C | 10.0°C | 34.4°C3 September 2018 | −2.1°C21 September 2020 | 19 / 20 |
| October | 14.9°C | 4.4°C | 28.3°C9 October 2018 | −7.7°C31 October 2020 | 19 / 19 |
| November | 7.3°C | −1.9°C | 25.0°C1 November 2024 | −20.5°C23 November 2018 | 18 / 19 |
| December | 1.3°C | −7.1°C | 21.7°C24 December 2015 | −27.7°C28 December 2017 | 19 / 19 |
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 18 to 20 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.