Jaffrey Muni climate by month
Averages and records for each calendar month at Jaffrey Muni, United States, from 1997 to 2026. The warmest month is July, averaging 27.0°C; the coolest is January at −0.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.5°C | −10.3°C | 17.8°C6 January 2007 | −29.9°C16 January 2009 | 30 / 30 |
| February | 1.3°C | −9.5°C | 21.7°C21 February 2018 | −28.9°C14 February 2003 | 30 / 30 |
| March | 6.0°C | −4.9°C | 28.9°C31 March 1998 | −23.9°C7 March 2003 | 30 / 30 |
| April | 13.0°C | 0.8°C | 32.2°C28 April 2009 | −15.5°C5 April 2016 | 30 / 30 |
| May | 19.5°C | 6.9°C | 33.3°C26 May 2010 | −3.8°C1 May 2008 | 30 / 30 |
| June | 24.1°C | 12.2°C | 36.1°C24 June 2025 | 1.7°C1 June 2001 | 30 / 30 |
| July | 27.0°C | 15.2°C | 35.6°C1 July 2018 | 6.1°C28 July 2001 | 30 / 30 |
| August | 26.0°C | 14.2°C | 34.4°C9 August 2001 | 3.9°C22 August 2007 | 29 / 29 |
| September | 22.0°C | 10.0°C | 33.3°C2 September 2010 | −3.3°C29 September 2000 | 28 / 29 |
| October | 15.0°C | 3.9°C | 29.4°C4 October 2023 | −11.0°C31 October 2020 | 28 / 29 |
| November | 8.3°C | −1.3°C | 23.9°C6 November 2024 | −18.2°C23 November 2018 | 29 / 29 |
| December | 2.4°C | −6.7°C | 20.0°C7 December 1998 | −26.6°C17 December 2013 | 28 / 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 28 to 30 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.