July
July · August · June
Canada · 1991–2020
July leads for comfortable weather in Centreville: typically 24°C by day, 13.5°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · June
July · August · June
June · September · August
The weakest month is January, scoring 5 against July’s 87 — days reach only -2.2°C, 26° 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -2.2°C | -10°C | 108 mm | 18.6 | 3.3°C | 9 h 08 | 5 | Good coverage |
| February | -1.8°C | -10.4°C | 77 mm | 13.6 | 1.9°C | 10 h 20 | 5 | Good coverage |
| March | 2.8°C | -6.2°C | 65 mm | 11 | 1.4°C | 11 h 46 | 5 | Good coverage |
| April | 10.1°C | 0.2°C | 82 mm | 10.4 | 2.3°C | 13 h 25 | 14 | Good coverage |
| May | 16.8°C | 5.5°C | 81 mm | 9.6 | 4.2°C | 14 h 49 | 47 | Good coverage |
| June | 21.8°C | 10.7°C | 77 mm | 8.5 | 9.6°C | 15 h 35 | 74 | Good coverage |
| July | 24°C | 13.5°C | 71 mm | 8.4 | 17.2°C | 15 h 17 | 87 | Good coverage |
| August | 23.6°C | 13°C | 76 mm | 7.7 | 19.7°C | 14 h 04 | 85 | Good coverage |
| September | 19.9°C | 9.3°C | 96 mm | 10.7 | 17.9°C | 12 h 28 | 61 | Good coverage |
| October | 13.2°C | 4.6°C | 107 mm | 14.4 | 13.0°C | 10 h 53 | 25 | Good coverage |
| November | 6.7°C | -0.5°C | 111 mm | 15.8 | 8.5°C | 9 h 29 | 5 | Good coverage |
| December | 0.7°C | -5.7°C | 104 mm | 17 | 5.5°C | 8 h 47 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 17.8°C25 Jan 1950 | -36.4°C18 Jan 1977 | 48 mm31 Jan 1982 | 201 mm1997 · driest 40 mm in 1981 | 67 |
| February | 16.9°C26 Feb 2000 | -34.8°C18 Feb 1979 | 49 mm21 Feb 1997 | 154 mm2006 · driest 21 mm in 1998 | 66 |
| March | 27.2°C21 Mar 2012 | -30.7°C2 Mar 1980 | 47 mm17 Mar 1973 | 149 mm1998 · driest 8 mm in 2010 | 67 |
| April | 30.0°C28 Apr 1990 | -17.8°C6 Apr 2003 | 48 mm10 Apr 2011 | 166 mm2013 · driest 15 mm in 1976 | 67 |
| May | 32.1°C30 May 2006 | -5.0°C7 May 1966 | 62 mm23 May 2004 | 187 mm2004 · driest 12 mm in 1951 | 67 |
| June | 33.3°C26 Jun 1966 | -1.6°C8 Jun 1977 | 68 mm23 Jun 1950 | 164 mm2010 · driest 6 mm in 1964 | 67 |
| July | 33.3°C18 Jul 1968 | 3.3°C5 Jul 1972 | 105 mm28 Jul 1969 | 201 mm1980 · driest 0 mm in 1989 | 68 |
| August | 35.0°C6 Aug 1947 | 1.7°C30 Aug 1965 | 73 mm20 Aug 1968 | 191 mm1967 · driest 18 mm in 1993 | 68 |
| September | 35.6°C3 Sep 1953 | -3.4°C27 Sep 1989 | 89 mm12 Sep 1963 | 196 mm1986 · driest 13 mm in 2004 | 68 |
| October | 28.3°C1 Oct 1971 | -7.2°C29 Oct 1965 | 69 mm15 Oct 1954 | 207 mm2013 · driest 16 mm in 1952 | 67 |
| November | 23.3°C1 Nov 1950 | -18.0°C29 Nov 1995 | 46 mm10 Nov 1988 | 202 mm1989 · driest 25 mm in 1986 | 66 |
| December | 18.1°C5 Dec 2001 | -26.6°C20 Dec 2004 | 46 mm6 Dec 1962 | 193 mm2008 · driest 32 mm in 1994 | 67 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 2 | 22 |
| February | 0 | 0 | 27 | 2 | 17 |
| March | <1 | 0 | 26 | 2 | 10 |
| April | <1 | 0 | 15 | 3 | 4 |
| May | 3 | <1 | 2 | 3 | <1 |
| June | 7 | 1 | 0 | 3 | 0 |
| July | 12 | 1 | 0 | 2 | 0 |
| August | 10 | 1 | 0 | 3 | 0 |
| September | 4 | <1 | <1 | 3 | 0 |
| October | <1 | 0 | 4 | 4 | 1 |
| November | 0 | 0 | 16 | 4 | 9 |
| December | 0 | 0 | 26 | 3 | 18 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 58% | 7% | 81% | -5.4–0.3°C |
| February | 0% | 47% | 6% | 64% | -5.5–0.7°C |
| March | <1% | 35% | 6% | 48% | -0.6–4.4°C |
| April | 5% | 33% | 7% | 41% | 7.0–12.3°C |
| May | 20% | 28% | 8% | 32% | 13.9–19.0°C |
| June | 45% | 28% | 8% | 32% | 19.6–23.3°C |
| July | 68% | 23% | 7% | 24% | 22.3–26.0°C |
| August | 63% | 27% | 9% | 29% | 21.5–25.0°C |
| September | 31% | 34% | 11% | 47% | 17.8–21.6°C |
| October | 9% | 40% | 10% | 56% | 10.8–15.5°C |
| November | <1% | 50% | 11% | 74% | 4.1–8.6°C |
| December | 0% | 57% | 10% | 79% | -2.6–2.7°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