August
August · July · June
United States · 1991–2020
August leads for comfortable weather in Harvey: typically 27.1°C by day, 12.1°C at night, with 54 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · June
July · August · June
September · May · August
The weakest month is January, scoring 5 against August’s 81 — days reach only -7°C, 31° 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 | -7°C | -17.6°C | 4 mm | 1.1 | 8 h 48 | 5 | Strong coverage |
| February | -4.9°C | -16.1°C | 12 mm | 1.3 | 10 h 09 | 5 | Strong coverage |
| March | 2.4°C | -8.8°C | 14 mm | 1.9 | 11 h 44 | 5 | Strong coverage |
| April | 11.9°C | -1.7°C | 24 mm | 3.1 | 13 h 34 | 30 | Strong coverage |
| May | 19.8°C | 5.6°C | 66 mm | 6.7 | 15 h 07 | 62 | Strong coverage |
| June | 24.8°C | 11.7°C | 100 mm | 8.5 | 15 h 59 | 77 | Strong coverage |
| July | 27.7°C | 13.9°C | 73 mm | 6.4 | 15 h 38 | 78 | Strong coverage |
| August | 27.1°C | 12.1°C | 54 mm | 4.4 | 14 h 17 | 81 | Strong coverage |
| September | 22°C | 7°C | 49 mm | 4.3 | 12 h 30 | 76 | Strong coverage |
| October | 13.1°C | -0.2°C | 29 mm | 3 | 10 h 45 | 37 | Strong coverage |
| November | 3°C | -8°C | 9 mm | 1.3 | 9 h 12 | 5 | Strong coverage |
| December | -4.7°C | -14.6°C | 7 mm | 1.2 | 8 h 25 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.4°C5 Jan 2012 | -40.0°C14 Jan 2009 | 20 mm16 Jan 1994 | 21 mm1999 · driest 0 mm in 2008 | 42 |
| February | 16.1°C27 Feb 1988 | -40.6°C1 Feb 1996 | 76 mm21 Feb 2003 | 203 mm2003 · driest 0 mm in 1982 | 44 |
| March | 23.3°C25 Mar 2007 | -33.9°C2 Mar 2003 | 51 mm27 Mar 2004 | 102 mm2004 · driest 0 mm in 1994 | 44 |
| April | 32.8°C18 Apr 1987 | -21.7°C4 Apr 2002 | 37 mm23 Apr 2008 | 95 mm1986 · driest 0 mm in 2005 | 45 |
| May | 36.1°C22 May 1980 | -8.9°C2 May 2005 | 50 mm31 May 2004 | 164 mm2013 · driest 5 mm in 2020 | 45 |
| June | 39.4°C29 Jun 2002 | 1.1°C7 Jun 1992 | 142 mm30 Jun 2020 | 215 mm2005 · driest 18 mm in 1992 | 46 |
| July | 41.7°C27 Jul 1988 | 4.4°C12 Jul 1993 | 74 mm22 Jul 1993 | 190 mm2000 · driest 11 mm in 1984 | 46 |
| August | 40.6°C8 Aug 1983 | 0.0°C27 Aug 1982 | 123 mm12 Aug 1999 | 166 mm2008 · driest 0 mm in 2020 | 44 |
| September | 39.4°C3 Sep 2015 | -5.0°C23 Sep 1989 | 61 mm10 Sep 2003 | 149 mm2019 · driest 0 mm in 1993 | 46 |
| October | 32.2°C1 Oct 1992 | -18.3°C30 Oct 2023 | 48 mm3 Oct 2012 | 129 mm1982 · driest 0 mm in 1987 | 46 |
| November | 25.6°C7 Nov 1999 | -30.0°C26 Nov 2014 | 30 mm5 Nov 2008 | 54 mm2000 · driest 0 mm in 1999 | 45 |
| December | 15.6°C9 Dec 2015 | -36.1°C21 Dec 1989 | 25 mm15 Dec 2003 | 79 mm2003 · driest 0 mm in 1991 | 44 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 0 | 2 |
| February | 0 | 0 | 26 | <1 | 2 |
| March | 0 | 0 | 27 | <1 | 2 |
| April | 1 | <1 | 18 | <1 | 1 |
| May | 6 | 1 | 4 | 2 | <1 |
| June | 14 | 4 | 0 | 3 | 0 |
| July | 22 | 8 | 0 | 2 | 0 |
| August | 20 | 8 | 0 | 2 | 0 |
| September | 10 | 3 | 2 | 2 | 0 |
| October | 2 | <1 | 16 | 1 | <1 |
| November | 0 | 0 | 27 | <1 | 1 |
| December | 0 | 0 | 28 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 7% | <1% | 4% | -11.7–-1.5°C |
| February | 0% | 6% | <1% | 2% | -10.5–1.2°C |
| March | 1% | 9% | 2% | 6% | -2.3–8.3°C |
| April | 17% | 13% | 3% | 9% | 7.8–16.3°C |
| May | 48% | 21% | 7% | 22% | 17.3–23.9°C |
| June | 66% | 28% | 10% | 31% | 22.5–28.1°C |
| July | 77% | 21% | 7% | 16% | 25.8–29.9°C |
| August | 81% | 17% | 6% | 11% | 24.7–30.3°C |
| September | 59% | 16% | 5% | 13% | 19.1–24.6°C |
| October | 20% | 11% | 3% | 5% | 9.7–16.3°C |
| November | 1% | 7% | 1% | 3% | -0.8–8.9°C |
| December | 0% | 6% | <1% | 4% | -9.7–0.5°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