Roseburg Rgnl climate by month
Averages and records for each calendar month at Roseburg Rgnl, United States, from 1900 to 2026. The warmest month is July, averaging 29.4°C; the coolest is January at 9.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 9.4°C | 1.9°C | 21.7°C17 January 2018 | −18.3°C22 January 1962 | 64 / 64 |
| February | 11.8°C | 2.6°C | 26.1°C26 February 1932 | −10.6°C16 February 1956 | 65 / 65 |
| March | 14.4°C | 3.5°C | 28.3°C15 March 1947 | −7.2°C6 March 1956 | 63 / 64 |
| April | 17.7°C | 5.2°C | 35.0°C28 April 2023 | −3.9°C1 April 1936 | 65 / 65 |
| May | 21.3°C | 8.0°C | 40.6°C16 May 2008 | −3.3°C1 May 1954 | 64 / 64 |
| June | 24.8°C | 10.7°C | 45.6°C27 June 2021 | 1.1°C6 June 1954 | 64 / 64 |
| July | 29.4°C | 13.0°C | 42.8°C20 July 1946 | 3.9°C3 July 1962 | 66 / 66 |
| August | 29.4°C | 12.9°C | 42.8°C15 August 2020 | 5.0°C22 August 1955 | 65 / 65 |
| September | 26.2°C | 10.3°C | 40.6°C5 September 2024 | 0.0°C30 September 1954 | 64 / 65 |
| October | 19.3°C | 7.1°C | 35.6°C10 October 1934 | −6.1°C31 October 2002 | 63 / 63 |
| November | 12.4°C | 4.4°C | 25.0°C4 November 2020 | −9.4°C15 November 1955 | 63 / 63 |
| December | 9.4°C | 2.7°C | 21.1°C21 December 1940 | −15.0°C11 December 1932 | 63 / 63 |
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 63 to 66 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.