June
June · August · July
Canada · 1991–2020
June leads for comfortable weather in Salaberry-de-Valleyfield: typically 24.2°C by day, 13.8°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.
June · August · July
July · August · June
September · May · June
The weakest month is January, scoring 5 against June’s 83 — days reach only -5.4°C, 29° below the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -5.4°C | -13.6°C | 78 mm | 13.7 | 9 h 06 | 5 | Good coverage |
| February | -3.5°C | -12.7°C | 61 mm | 11 | 10 h 19 | 5 | Good coverage |
| March | 2.4°C | -6.7°C | 69 mm | 10.7 | 11 h 46 | 5 | Good coverage |
| April | 11.3°C | 1.2°C | 86 mm | 9.6 | 13 h 26 | 20 | Good coverage |
| May | 18.9°C | 8°C | 90 mm | 11 | 14 h 51 | 56 | Good coverage |
| June | 24.2°C | 13.8°C | 94 mm | 10 | 15 h 37 | 83 | Good coverage |
| July | 26.4°C | 16.2°C | 93 mm | 10.3 | 15 h 19 | 75 | Good coverage |
| August | 25.6°C | 15.3°C | 89 mm | 9.2 | 14 h 05 | 81 | Good coverage |
| September | 21°C | 10.9°C | 92 mm | 9.7 | 12 h 28 | 69 | Good coverage |
| October | 13.1°C | 4.5°C | 96 mm | 10.2 | 10 h 52 | 30 | Good coverage |
| November | 6.1°C | -1.1°C | 81 mm | 11.2 | 9 h 27 | 5 | Good coverage |
| December | -1.2°C | -8.3°C | 77 mm | 13.3 | 8 h 45 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.0°C18 Jan 1996 | -38.3°C15 Jan 1957 | 43 mm15 Jan 1962 | 173 mm1978 · driest 14 mm in 1981 | 58 |
| February | 16.0°C21 Feb 1981 | -33.5°C7 Feb 1993 | 41 mm21 Feb 1954 | 192 mm1954 · driest 4 mm in 1966 | 59 |
| March | 23.0°C31 Mar 2006 | -29.0°C2 Mar 1992 | 45 mm4 Mar 1952 | 170 mm1955 · driest 11 mm in 1967 | 60 |
| April | 30.0°C27 Apr 2009 | -15.6°C4 Apr 1954 | 41 mm22 Apr 1993 | 181 mm1961 · driest 7 mm in 2004 | 60 |
| May | 35.0°C26 May 2010 | -4.4°C7 May 1966 | 58 mm19 May 2006 | 186 mm2006 · driest 15 mm in 1959 | 60 |
| June | 34.4°C30 Jun 1964 | 2.2°C1 Jun 1965 | 67 mm11 Jun 2002 | 174 mm1998 · driest 17 mm in 1965 | 60 |
| July | 35.6°C22 Jul 1955 | 6.0°C25 Jul 2013 | 112 mm26 Jul 1986 | 174 mm1986 · driest 19 mm in 1978 | 60 |
| August | 36.5°C8 Aug 2001 | 1.7°C23 Aug 1957 | 92 mm14 Aug 1984 | 202 mm1963 · driest 1 mm in 1957 | 61 |
| September | 35.0°C4 Sep 1953 | -2.0°C30 Sep 1991 | 81 mm30 Sep 2010 | 189 mm1975 · driest 23 mm in 1961 | 60 |
| October | 28.9°C2 Oct 1968 | -8.9°C21 Oct 1957 | 64 mm13 Oct 2005 | 206 mm2005 · driest 24 mm in 1963 | 59 |
| November | 22.5°C28 Nov 1990 | -21.0°C29 Nov 1978 | 75 mm8 Nov 1996 | 147 mm1983 · driest 27 mm in 1956 | 59 |
| December | 17.0°C5 Dec 2001 | -32.0°C25 Dec 1980 | 49 mm5 Dec 1952 | 152 mm1990 · driest 27 mm in 1992 | 59 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | 2 | 11 |
| February | 0 | 0 | 27 | 2 | 9 |
| March | 0 | 0 | 27 | 2 | 7 |
| April | <1 | 0 | 13 | 3 | 2 |
| May | 5 | <1 | <1 | 3 | 0 |
| June | 14 | 3 | 0 | 3 | 0 |
| July | 20 | 5 | 0 | 3 | 0 |
| August | 19 | 4 | 0 | 3 | 0 |
| September | 6 | 1 | <1 | 3 | 0 |
| October | <1 | 0 | 5 | 3 | <1 |
| November | 0 | 0 | 19 | 2 | 3 |
| December | 0 | 0 | 28 | 3 | 10 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 38% | 7% | 54% | -9.0–-2.0°C |
| February | 0% | 35% | 8% | 48% | -7.1–-1.0°C |
| March | <1% | 30% | 7% | 38% | -0.2–4.7°C |
| April | 7% | 31% | 9% | 38% | 8.8–13.3°C |
| May | 31% | 34% | 8% | 44% | 16.3–21.6°C |
| June | 59% | 32% | 10% | 41% | 22.2–25.5°C |
| July | 66% | 32% | 10% | 44% | 24.6–28.1°C |
| August | 66% | 30% | 10% | 34% | 23.5–27.2°C |
| September | 40% | 31% | 10% | 39% | 18.6–22.8°C |
| October | 10% | 32% | 8% | 41% | 10.9–15.3°C |
| November | <1% | 35% | 8% | 48% | 3.4–8.3°C |
| December | 0% | 39% | 8% | 56% | -6.0–1.3°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page