Winchester weather by month
Measured at Martinsburg/E West Virginia Rgnl
Averages and records for each calendar month at Martinsburg/E West Virginia Rgnl, United States, from 1891 to 2026. The warmest month is July, averaging 30.8°C; the coolest is January at 4.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.7°C | −5.3°C | 26.7°C14 January 1932 | −28.3°C14 January 1912 | 133 / 133 |
| February | 6.1°C | −4.7°C | 28.3°C27 February 1997 | −25.0°C10 February 1899 | 133 / 134 |
| March | 11.8°C | −0.2°C | 32.2°C23 March 1907 | −19.4°C15 March 1993 | 134 / 134 |
| April | 18.2°C | 4.8°C | 38.3°C24 April 1925 | −7.2°C2 April 1907 | 134 / 135 |
| May | 23.8°C | 10.3°C | 37.8°C23 May 1925 | −3.3°C11 May 1966 | 135 / 135 |
| June | 28.4°C | 15.2°C | 43.3°C1 June 1925 | 2.2°C1 June 1930 | 134 / 135 |
| July | 30.8°C | 17.8°C | 44.4°C11 July 1936 | 5.0°C1 July 1943 | 135 / 135 |
| August | 29.6°C | 16.7°C | 42.2°C5 August 1930 | 3.3°C23 August 1923 | 135 / 135 |
| September | 25.9°C | 12.6°C | 39.4°C1 September 1932 | −1.7°C28 September 1947 | 134 / 135 |
| October | 19.4°C | 6.1°C | 36.7°C2 October 1927 | −8.3°C24 October 1969 | 134 / 134 |
| November | 12.6°C | 1.0°C | 30.0°C1 November 1974 | −14.4°C16 November 1908 | 133 / 134 |
| December | 6.4°C | −3.4°C | 25.6°C7 December 1951 | −24.4°C25 December 1983 | 133 / 133 |
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 133 to 135 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
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.