The Dalles Muni climate by month
Averages and records for each calendar month at The Dalles Muni, United States, from 1948 to 2026. The warmest month is July, averaging 31.1°C; the coolest is January at 5.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 5.1°C | −1.6°C | 20.0°C31 January 1971 | −28.3°C31 January 1950 | 78 / 78 |
| February | 9.0°C | −0.1°C | 21.1°C10 February 2022 | −31.7°C3 February 1950 | 78 / 78 |
| March | 13.7°C | 2.1°C | 26.7°C28 March 1994 | −14.3°C5 March 2019 | 78 / 78 |
| April | 18.1°C | 5.1°C | 35.0°C30 April 1998 | −5.0°C3 April 2007 | 78 / 78 |
| May | 23.1°C | 9.1°C | 41.7°C30 May 1986 | −2.2°C1 May 1954 | 78 / 78 |
| June | 26.7°C | 12.7°C | 47.8°C28 June 2021 | 2.8°C1 June 1966 | 78 / 78 |
| July | 31.1°C | 15.6°C | 44.4°C29 July 2022 | 4.4°C8 July 1981 | 79 / 79 |
| August | 30.8°C | 15.3°C | 43.3°C9 August 1971 | 5.6°C29 August 1980 | 78 / 78 |
| September | 26.9°C | 11.0°C | 40.6°C3 September 1988 | −1.7°C17 September 1965 | 77 / 78 |
| October | 19.0°C | 5.7°C | 32.2°C3 October 1958 | −9.4°C31 October 2002 | 78 / 78 |
| November | 10.3°C | 1.8°C | 23.3°C14 November 2021 | −18.3°C24 November 1985 | 78 / 78 |
| December | 5.6°C | −0.7°C | 21.1°C1 December 2021 | −22.8°C8 December 1972 | 78 / 78 |
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 77 to 79 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.