Selinsgrove/Penn Valley Arpt climate by month
Averages and records for each calendar month at Selinsgrove/Penn Valley Arpt, United States, from 1997 to 2026. The warmest month is July, averaging 29.5°C; the coolest is January at 2.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 2.8°C | −6.6°C | 20.6°C29 January 2002 | −25.6°C30 January 2026 | 29 / 29 |
| February | 4.6°C | −5.8°C | 24.4°C21 February 2018 | −24.9°C12 February 2014 | 29 / 29 |
| March | 10.5°C | −1.4°C | 30.6°C30 March 1998 | −20.0°C7 March 2003 | 29 / 29 |
| April | 17.3°C | 3.8°C | 33.9°C17 April 2002 | −7.2°C7 April 2002 | 29 / 29 |
| May | 22.8°C | 9.5°C | 34.4°C30 May 2006 | −1.6°C9 May 2020 | 29 / 29 |
| June | 27.3°C | 14.8°C | 36.1°C21 June 2024 | 3.9°C2 June 2003 | 29 / 29 |
| July | 29.5°C | 16.9°C | 40.0°C8 July 2010 | 7.8°C3 July 2001 | 29 / 29 |
| August | 28.2°C | 15.7°C | 36.7°C8 August 2001 | 6.7°C20 August 1998 | 29 / 29 |
| September | 24.8°C | 11.6°C | 35.6°C10 September 2002 | −1.0°C21 September 2020 | 29 / 30 |
| October | 18.2°C | 5.5°C | 33.9°C8 October 2007 | −6.1°C29 October 2001 | 29 / 29 |
| November | 11.5°C | −0.1°C | 26.7°C6 November 2024 | −12.1°C22 November 2008 | 29 / 29 |
| December | 5.2°C | −3.8°C | 22.2°C4 December 1998 | −21.0°C31 December 2017 | 29 / 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 29 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.