Fort Smith Arpt climate by month
Averages and records for each calendar month at Fort Smith Arpt, Canada, from 1943 to 2025. The warmest month is July, averaging 23.1°C; the coolest is January at −19.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −19.8°C | −29.6°C | 8.7°C30 January 1993 | −49.4°C27 January 1966 | 67 / 81 |
| February | −14.9°C | −26.6°C | 12.2°C28 February 1986 | −53.9°C2 February 1947 | 70 / 82 |
| March | −6.5°C | −20.3°C | 15.6°C20 March 2019 | −44.4°C2 March 1962 | 70 / 81 |
| April | 4.8°C | −8.0°C | 30.0°C29 April 1980 | −40.6°C6 April 1954 | 71 / 82 |
| May | 14.3°C | 1.2°C | 33.0°C30 May 2025 | −23.0°C4 May 2002 | 71 / 82 |
| June | 20.7°C | 7.3°C | 35.0°C4 June 1970 | −6.1°C2 June 1959 | 70 / 82 |
| July | 23.1°C | 10.0°C | 35.1°C10 July 2012 | −3.3°C13 July 1951 | 70 / 82 |
| August | 20.9°C | 8.1°C | 35.3°C9 August 1981 | −5.6°C24 August 1950 | 71 / 82 |
| September | 13.4°C | 2.8°C | 31.7°C6 September 1951 | −12.8°C29 September 1961 | 72 / 82 |
| October | 4.5°C | −3.7°C | 26.1°C1 October 1947 | −27.9°C31 October 1984 | 71 / 82 |
| November | −7.6°C | −15.5°C | 13.3°C4 November 1974 | −40.6°C27 November 1966 | 68 / 81 |
| December | −16.3°C | −25.2°C | 9.4°C24 December 1999 | −48.3°C14 December 1946 | 67 / 80 |
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 67 to 72 years each.
See what Fort Smith Arpt is doing right now
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.