July
July · August · June
Canada · 1991–2020
July leads for comfortable weather in Grayson: typically 24.6°C by day, 11.5°C at night, with 67 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · June
July · August · June
September · June · August
The weakest month is January, scoring 5 against July’s 82 — days reach only -11.5°C, 35° 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 | -11.5°C | -21.2°C | 19 mm | 5.9 | 8 h 25 | 5 | Good coverage |
| February | -7.6°C | -17.6°C | 14 mm | 4.4 | 9 h 56 | 5 | Good coverage |
| March | -1.2°C | -11.6°C | 19 mm | 5.1 | 11 h 42 | 5 | Good coverage |
| April | 9.7°C | -2.4°C | 25 mm | 4.8 | 13 h 43 | 20 | Good coverage |
| May | 17.1°C | 3.6°C | 59 mm | 9.7 | 15 h 28 | 47 | Good coverage |
| June | 21.6°C | 9.3°C | 86 mm | 11.8 | 16 h 28 | 67 | Good coverage |
| July | 24.6°C | 11.5°C | 67 mm | 8.8 | 16 h 04 | 82 | Good coverage |
| August | 24.2°C | 10.2°C | 62 mm | 8.5 | 14 h 32 | 82 | Good coverage |
| September | 18.7°C | 5°C | 40 mm | 6.8 | 12 h 33 | 60 | Good coverage |
| October | 9.8°C | -1.5°C | 24 mm | 5.5 | 10 h 36 | 21 | Good coverage |
| November | -1.2°C | -10.1°C | 21 mm | 5.1 | 8 h 52 | 5 | Good coverage |
| December | -7.9°C | -16.8°C | 26 mm | 7.3 | 7 h 59 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 7.0°C8 Jan 2002 | -42.0°C26 Jan 1997 | 15 mm21 Jan 1997 | 38 mm1995 · driest 0 mm in 2001 | 31 |
| February | 11.5°C27 Feb 1988 | -42.0°C1 Feb 1996 | 18 mm26 Feb 1998 | 44 mm1998 · driest 0 mm in 2000 | 31 |
| March | 21.5°C24 Mar 1993 | -39.0°C2 Mar 2003 | 27 mm12 Mar 1990 | 60 mm1995 · driest 0 mm in 1977 | 32 |
| April | 31.0°C20 Apr 1980 | -27.0°C1 Apr 1979 | 32 mm18 Apr 2006 | 70 mm2003 · driest 0 mm in 1980 | 31 |
| May | 38.0°C22 May 1980 | -16.5°C15 May 1983 | 44 mm22 May 2007 | 124 mm2004 · driest 5 mm in 1980 | 31 |
| June | 37.0°C13 Jun 1979 | -3.0°C7 Jun 1980 | 43 mm13 Jun 1981 | 211 mm2005 · driest 13 mm in 1979 | 31 |
| July | 38.5°C6 Jul 1981 | -0.5°C17 Jul 2000 | 54 mm19 Jul 2002 | 123 mm1977 · driest 3 mm in 2006 | 31 |
| August | 37.0°C3 Aug 1983 | -3.5°C27 Aug 1982 | 53 mm31 Aug 2005 | 116 mm2005 · driest 6 mm in 2001 | 31 |
| September | 35.0°C3 Sep 1978 | -8.0°C21 Sep 1995 | 44 mm21 Sep 1996 | 94 mm1984 · driest 8 mm in 2005 | 31 |
| October | 33.0°C1 Oct 1992 | -22.0°C30 Oct 1984 | 29 mm26 Oct 1989 | 52 mm1998 · driest 4 mm in 1990 | 31 |
| November | 20.0°C7 Nov 1999 | -37.0°C30 Nov 1985 | 19 mm8 Nov 2005 | 65 mm2000 · driest 2 mm in 1997 | 31 |
| December | 14.0°C14 Dec 1997 | -43.0°C23 Dec 1983 | 22 mm18 Dec 2002 | 49 mm2004 · driest 7 mm in 1999 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 6 |
| February | 0 | 0 | 28 | <1 | 4 |
| March | 0 | 0 | 30 | <1 | 5 |
| April | <1 | 0 | 21 | <1 | 2 |
| May | 4 | <1 | 8 | 2 | <1 |
| June | 8 | <1 | <1 | 3 | 0 |
| July | 16 | 4 | <1 | 2 | 0 |
| August | 14 | 4 | <1 | 2 | 0 |
| September | 5 | <1 | 4 | 1 | <1 |
| October | <1 | <1 | 20 | <1 | 2 |
| November | 0 | 0 | 29 | <1 | 5 |
| December | 0 | 0 | 31 | <1 | 7 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 19% | <1% | 15% | -17.6–-5.4°C |
| February | 0% | 15% | <1% | 9% | -12.4–-3.2°C |
| March | <1% | 17% | 1% | 13% | -4.4–2.5°C |
| April | 11% | 15% | 2% | 12% | 5.6–14.8°C |
| May | 32% | 29% | 6% | 39% | 14.6–20.5°C |
| June | 48% | 36% | 9% | 51% | 19.8–24.0°C |
| July | 66% | 29% | 7% | 32% | 23.3–27.2°C |
| August | 63% | 26% | 6% | 30% | 20.7–27.8°C |
| September | 35% | 25% | 4% | 29% | 15.4–20.9°C |
| October | 10% | 18% | 1% | 15% | 7.8–12.4°C |
| November | <1% | 16% | 1% | 15% | -4.7–4.3°C |
| December | 0% | 20% | 1% | 19% | -14.7–-4.5°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