July
July · August · June
United States · 1991–2020
July leads for comfortable weather in Centerville: typically 26.5°C by day, 12.2°C at night, with 128 mm of rain. Based on measured 1991–2020 NOAA station history.
July · August · June
July · August · June
September · May · June
The weakest month is January, scoring 5 against July’s 66 — days reach only 0°C, 24° 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 | 0°C | -11.3°C | 100 mm | 13.7 | 9 h 26 | 5 | Good coverage |
| February | 1.7°C | -10.6°C | 79 mm | 10.2 | 10 h 31 | 5 | Good coverage |
| March | 6.3°C | -6.9°C | 101 mm | 11.4 | 11 h 48 | 5 | Good coverage |
| April | 13.6°C | -0.9°C | 106 mm | 12.1 | 13 h 17 | 19 | Good coverage |
| May | 19.9°C | 4.7°C | 118 mm | 13.3 | 14 h 32 | 47 | Good coverage |
| June | 23.8°C | 9.7°C | 157 mm | 12.5 | 15 h 13 | 64 | Good coverage |
| July | 26.5°C | 12.2°C | 128 mm | 11.7 | 14 h 57 | 66 | Good coverage |
| August | 25.6°C | 11.9°C | 143 mm | 11.9 | 13 h 52 | 66 | Good coverage |
| September | 22.3°C | 8.4°C | 128 mm | 10.1 | 12 h 26 | 63 | Good coverage |
| October | 15.5°C | 2.5°C | 130 mm | 12.2 | 11 h | 28 | Good coverage |
| November | 8.8°C | -2.6°C | 94 mm | 11.7 | 9 h 45 | 5 | Good coverage |
| December | 2.7°C | -6.9°C | 108 mm | 14.2 | 9 h 08 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 17.2°C6 Jan 2007 | -29.4°C29 Jan 2005 | 76 mm29 Jan 2009 | 146 mm1999 · driest 43 mm in 2025 | 30 |
| February | 22.8°C25 Feb 2017 | -29.4°C14 Feb 2016 | 57 mm14 Feb 2007 | 153 mm2008 · driest 27 mm in 2010 | 29 |
| March | 29.4°C31 Mar 1998 | -26.1°C1 Mar 2015 | 65 mm7 Mar 2011 | 186 mm2008 · driest 44 mm in 2006 | 30 |
| April | 32.8°C28 Apr 2009 | -14.4°C6 Apr 2016 | 68 mm8 Apr 2022 | 201 mm2011 · driest 15 mm in 2001 | 29 |
| May | 32.2°C29 May 2016 | -6.7°C2 May 2008 | 67 mm17 May 2014 | 213 mm2025 · driest 44 mm in 2015 | 30 |
| June | 32.8°C24 Jun 2025 | -2.8°C5 Jun 2004 | 245 mm27 Jun 2006 | 462 mm2006 · driest 63 mm in 1999 | 30 |
| July | 34.4°C23 Jul 2011 | -1.7°C13 Jul 2002 | 82 mm26 Jul 2018 | 261 mm2021 · driest 34 mm in 2002 | 30 |
| August | 36.1°C9 Aug 2001 | 2.8°C31 Aug 2025 | 87 mm19 Aug 2006 | 283 mm2011 · driest 30 mm in 1998 | 29 |
| September | 32.8°C2 Sep 1999 | -3.9°C29 Sep 2000 | 103 mm16 Sep 2004 | 327 mm2011 · driest 44 mm in 2010 | 29 |
| October | 29.4°C6 Oct 2007 | -7.8°C31 Oct 2020 | 128 mm1 Oct 2010 | 255 mm2010 · driest 39 mm in 2024 | 29 |
| November | 24.4°C1 Nov 2024 | -23.3°C24 Nov 2018 | 58 mm16 Nov 2006 | 163 mm2018 · driest 37 mm in 2012 | 29 |
| December | 18.9°C25 Dec 2015 | -27.2°C15 Dec 2005 | 61 mm25 Dec 2002 | 173 mm2023 · driest 15 mm in 1999 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 3 | 13 |
| February | 0 | 0 | 27 | 2 | 10 |
| March | <1 | 0 | 27 | 3 | 7 |
| April | 2 | <1 | 19 | 3 | 2 |
| May | 7 | <1 | 7 | 4 | <1 |
| June | 14 | 2 | <1 | 5 | 0 |
| July | 22 | 5 | 0 | 4 | 0 |
| August | 19 | 3 | 0 | 4 | 0 |
| September | 8 | 1 | <1 | 4 | 0 |
| October | 2 | 0 | 12 | 4 | <1 |
| November | 0 | 0 | 23 | 3 | 4 |
| December | 0 | 0 | 27 | 3 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 44% | 10% | 57% | -3.3–3.2°C |
| February | <1% | 36% | 8% | 49% | -1.7–4.4°C |
| March | 2% | 36% | 11% | 48% | 3.2–10.0°C |
| April | 13% | 41% | 11% | 57% | 11.9–16.1°C |
| May | 35% | 43% | 13% | 62% | 17.6–22.0°C |
| June | 51% | 41% | 17% | 53% | 22.4–24.9°C |
| July | 61% | 38% | 15% | 46% | 24.9–28.0°C |
| August | 59% | 39% | 14% | 47% | 24.0–27.9°C |
| September | 50% | 35% | 14% | 43% | 20.8–23.8°C |
| October | 19% | 38% | 12% | 51% | 14.0–17.3°C |
| November | 3% | 40% | 11% | 55% | 6.1–11.8°C |
| December | 0% | 45% | 12% | 61% | -0.2–5.4°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