Montague/Siskiyou Cnty weather by month
Averages and records for each calendar month at Montague/Siskiyou Cnty, United States, from 1948 to 2026. The warmest month is July, averaging 34.2°C; the coolest is December at 6.9°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 7.5°C | −3.6°C | 19.4°C29 January 2024 | −25.5°C6 January 2017 | 31 / 31 |
| February | 10.4°C | −3.1°C | 22.2°C9 February 2022 | −25.0°C2 February 1950 | 30 / 30 |
| March | 13.7°C | −1.1°C | 27.2°C18 March 2026 | −11.6°C31 March 2008 | 30 / 30 |
| April | 17.8°C | 1.0°C | 32.2°C21 April 2009 | −9.4°C5 April 2001 | 30 / 30 |
| May | 23.2°C | 4.9°C | 36.7°C16 May 2008 | −7.1°C1 May 2008 | 30 / 30 |
| June | 28.3°C | 8.9°C | 42.8°C27 June 2021 | −3.3°C12 June 1952 | 30 / 30 |
| July | 34.2°C | 13.0°C | 43.9°C28 July 2022 | 4.4°C11 July 2016 | 30 / 31 |
| August | 33.0°C | 11.7°C | 41.7°C1 August 2017 | 2.8°C31 August 2008 | 30 / 30 |
| September | 28.6°C | 7.5°C | 41.1°C6 September 2022 | −2.8°C30 September 1950 | 28 / 30 |
| October | 20.5°C | 2.2°C | 33.3°C5 October 1952 | −11.1°C31 October 2002 | 30 / 30 |
| November | 11.9°C | −1.5°C | 25.0°C2 November 1949 | −13.2°C29 November 2015 | 30 / 30 |
| December | 6.9°C | −3.1°C | 18.9°C10 December 1950 | −22.7°C9 December 2013 | 30 / 30 |
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 31 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.