April
April · October · May
United States · 1991–2020
April leads for comfortable weather in Lewisville: typically 23.8°C by day, 9.9°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · May
August · June · September
March · November · April
The weakest month is January, scoring 22 against April’s 75 — days reach only 12.5°C, 11° below the 24°C the score treats as ideal, and nights drop to 0.4°C.
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 | 12.5°C | 0.4°C | 104 mm | 7.1 | 10 h 10 | 22 | Strong coverage |
| February | 14.8°C | 2.1°C | 120 mm | 7.7 | 10 h 56 | 30 | Strong coverage |
| March | 19.4°C | 6.1°C | 123 mm | 7.9 | 11 h 53 | 52 | Strong coverage |
| April | 23.8°C | 9.9°C | 116 mm | 7.2 | 12 h 58 | 75 | Strong coverage |
| May | 27.5°C | 15.3°C | 127 mm | 7.5 | 13 h 52 | 71 | Strong coverage |
| June | 31.5°C | 19.6°C | 110 mm | 7 | 14 h 21 | 53 | Strong coverage |
| July | 33.6°C | 21.5°C | 97 mm | 6.2 | 14 h 09 | 45 | Strong coverage |
| August | 33.9°C | 20.9°C | 85 mm | 5.2 | 13 h 23 | 48 | Strong coverage |
| September | 31°C | 17.3°C | 95 mm | 4.7 | 12 h 20 | 63 | Strong coverage |
| October | 25°C | 11°C | 120 mm | 6.1 | 11 h 18 | 75 | Strong coverage |
| November | 18.3°C | 5.5°C | 103 mm | 6.9 | 10 h 23 | 51 | Strong coverage |
| December | 13.6°C | 1.7°C | 124 mm | 7.7 | 9 h 57 | 25 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C4 Jan 1997 | -13.3°C17 Jan 2018 | 94 mm25 Jan 2004 | 216 mm2007 · driest 3 mm in 2003 | 32 |
| February | 29.4°C24 Feb 2012 | -18.3°C16 Feb 2021 | 116 mm16 Feb 2001 | 334 mm2018 · driest 11 mm in 1999 | 32 |
| March | 32.2°C22 Mar 1995 | -10.6°C4 Mar 2002 | 89 mm9 Mar 2016 | 298 mm2015 · driest 32 mm in 2011 | 32 |
| April | 33.9°C10 Apr 2004 | -3.9°C8 Apr 2007 | 160 mm30 Apr 2016 | 316 mm2016 · driest 29 mm in 2003 | 32 |
| May | 36.1°C31 May 2018 | 2.8°C6 May 1992 | 143 mm9 May 2019 | 365 mm2019 · driest 12 mm in 2012 | 33 |
| June | 40.6°C26 Jun 2012 | 10.6°C7 Jun 2000 | 102 mm11 Jun 2010 | 255 mm1996 · driest 4 mm in 2011 | 33 |
| July | 43.9°C25 Jul 2011 | 13.9°C7 Jul 2006 | 165 mm12 Jul 2023 | 252 mm2023 · driest 3 mm in 2000 | 33 |
| August | 44.4°C7 Aug 2011 | 9.4°C16 Aug 1992 | 131 mm13 Aug 2020 | 326 mm2016 · driest 1 mm in 1992 | 32 |
| September | 43.3°C4 Sep 2000 | 4.4°C29 Sep 1992 | 131 mm22 Sep 2020 | 251 mm2001 · driest 1 mm in 2017 | 32 |
| October | 37.2°C4 Oct 2019 | -2.8°C20 Oct 2022 | 178 mm11 Oct 2001 | 627 mm2009 · driest 0 mm in 2005 | 32 |
| November | 30.6°C1 Nov 2016 | -7.8°C8 Nov 1991 | 94 mm24 Nov 2000 | 322 mm2000 · driest 22 mm in 1999 | 32 |
| December | 27.2°C11 Dec 2021 | -13.9°C24 Dec 2022 | 135 mm20 Dec 2017 | 273 mm2018 · driest 7 mm in 2005 | 32 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 17 | 3 |
| February | 1 | 0 | 12 | 4 |
| March | 6 | <1 | 5 | 4 |
| April | 14 | 1 | <1 | 4 |
| May | 23 | 9 | 0 | 4 |
| June | 28 | 22 | 0 | 3 |
| July | 30 | 27 | 0 | 3 |
| August | 29 | 26 | 0 | 3 |
| September | 27 | 20 | 0 | 3 |
| October | 17 | 5 | <1 | 3 |
| November | 3 | <1 | 6 | 3 |
| December | <1 | 0 | 14 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 11% | 23% | 11% | 21% | 10.7–15.2°C |
| February | 21% | 27% | 14% | 33% | 10.9–17.8°C |
| March | 44% | 25% | 13% | 28% | 17.3–22.5°C |
| April | 65% | 25% | 13% | 23% | 22.1–26.0°C |
| May | 73% | 25% | 13% | 30% | 25.7–29.6°C |
| June | 76% | 24% | 12% | 26% | 29.9–33.9°C |
| July | 81% | 20% | 9% | 16% | 31.6–35.6°C |
| August | 83% | 17% | 9% | 15% | 31.5–36.6°C |
| September | 84% | 15% | 8% | 10% | 28.3–33.4°C |
| October | 71% | 18% | 10% | 19% | 23.3–27.1°C |
| November | 33% | 23% | 11% | 23% | 15.7–20.6°C |
| December | 12% | 25% | 12% | 28% | 11.5–15.5°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