L'Assomption weather by month
Averages and records for each calendar month at L'Assomption, Canada, from 1930 to 2026. The warmest month is July, averaging 26.6°C; the coolest is January at −6.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −6.1°C | −16.6°C | 12.8°C7 January 1932 | −43.3°C15 January 1957 | 95 / 96 |
| February | −4.4°C | −15.7°C | 14.1°C27 February 2024 | −43.3°C17 February 1934 | 96 / 96 |
| March | 1.6°C | −8.5°C | 26.0°C21 March 2012 | −40.6°C4 March 1938 | 96 / 96 |
| April | 10.7°C | −0.1°C | 31.0°C27 April 1990 | −19.4°C4 April 1954 | 95 / 96 |
| May | 18.9°C | 6.4°C | 36.2°C27 May 2020 | −7.2°C7 May 1966 | 94 / 95 |
| June | 24.0°C | 11.8°C | 36.1°C27 June 1941 | −1.7°C2 June 1945 | 95 / 95 |
| July | 26.6°C | 14.4°C | 37.2°C17 July 1953 | 3.3°C29 July 1956 | 95 / 95 |
| August | 25.3°C | 13.2°C | 37.2°C14 August 1944 | 0.6°C31 August 1965 | 94 / 95 |
| September | 20.4°C | 8.7°C | 36.7°C11 September 1931 | −5.5°C29 September 1980 | 90 / 94 |
| October | 13.2°C | 3.0°C | 29.9°C5 October 2025 | −12.2°C26 October 1933 | 93 / 94 |
| November | 5.0°C | −2.9°C | 23.7°C5 November 2022 | −25.0°C29 November 1940 | 92 / 94 |
| December | −3.0°C | −12.0°C | 16.4°C24 December 2015 | −42.8°C29 December 1933 | 94 / 94 |
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 90 to 96 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.