Spokane Intl climate by month
Averages and records for each calendar month at Spokane Intl, United States, from 1889 to 2026. The warmest month is July, averaging 29.1°C; the coolest is January at 0.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 0.7°C | −5.5°C | 16.7°C1 January 1918 | −31.1°C29 January 1950 | 137 / 137 |
| February | 3.9°C | −3.8°C | 17.2°C20 February 1995 | −31.1°C2 February 1996 | 137 / 137 |
| March | 9.1°C | −0.7°C | 23.9°C26 March 2025 | −23.3°C3 March 1891 | 136 / 137 |
| April | 14.5°C | 2.5°C | 32.2°C29 April 1926 | −10.0°C1 April 1936 | 137 / 137 |
| May | 19.6°C | 6.6°C | 36.1°C25 May 1928 | −4.4°C1 May 1954 | 137 / 137 |
| June | 23.5°C | 10.2°C | 42.8°C29 June 2021 | 0.6°C1 June 1984 | 137 / 137 |
| July | 29.1°C | 13.5°C | 42.2°C26 July 1928 | 2.8°C8 July 1981 | 137 / 137 |
| August | 28.3°C | 12.8°C | 42.2°C4 August 1961 | 1.7°C31 August 1964 | 138 / 138 |
| September | 22.6°C | 8.4°C | 37.2°C1 September 2025 | −5.6°C24 September 1926 | 137 / 138 |
| October | 15.0°C | 3.2°C | 30.6°C4 October 1943 | −13.9°C31 October 2002 | 137 / 137 |
| November | 6.0°C | −1.1°C | 21.1°C1 November 1903 | −29.4°C23 November 1985 | 137 / 137 |
| December | 1.5°C | −4.3°C | 15.6°C10 December 1939 | −31.7°C30 December 1968 | 137 / 137 |
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 136 to 138 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.