West Branch Arpt climate by month
Averages and records for each calendar month at West Branch Arpt, United States, from 1900 to 2026. The warmest month is July, averaging 27.3°C; the coolest is January at −2.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −2.5°C | −12.5°C | 16.7°C26 January 1944 | −34.4°C30 January 1951 | 114 / 123 |
| February | −1.2°C | −12.8°C | 21.1°C28 February 2024 | −37.8°C10 February 1912 | 119 / 124 |
| March | 4.4°C | −7.6°C | 30.0°C22 March 2012 | −36.1°C3 March 1943 | 122 / 124 |
| April | 12.4°C | −1.1°C | 32.8°C26 April 1990 | −23.9°C1 April 1923 | 121 / 126 |
| May | 19.7°C | 4.8°C | 35.6°C26 May 1944 | −9.4°C9 May 1947 | 118 / 125 |
| June | 24.8°C | 10.3°C | 40.6°C1 June 1934 | −3.9°C8 June 1949 | 118 / 126 |
| July | 27.3°C | 12.7°C | 41.7°C13 July 1936 | −9.4°C12 July 1919 | 115 / 121 |
| August | 25.9°C | 11.8°C | 39.4°C6 August 1918 | −1.1°C22 August 1923 | 119 / 124 |
| September | 21.3°C | 7.9°C | 36.1°C11 September 1931 | −6.1°C30 September 1918 | 117 / 122 |
| October | 14.7°C | 2.2°C | 31.7°C9 October 2007 | −15.0°C28 October 1933 | 120 / 123 |
| November | 6.5°C | −3.1°C | 25.0°C1 November 1950 | −26.1°C24 November 1950 | 119 / 121 |
| December | −0.2°C | −8.9°C | 20.0°C6 December 2001 | −32.8°C29 December 1933 | 117 / 122 |
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 114 to 122 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.