September
September · October · May
United States · 1991–2020
September leads for comfortable weather in Nolensville: typically 28.5°C by day, 14.4°C at night, with 108 mm of rain. Based on measured 1991–2020 NOAA station history.
September · October · May
August · June · July
October · April · November
The weakest month is January, scoring 5 against September’s 71 — days reach only 8.5°C, 15° below the 24°C the score treats as ideal, and nights drop to -3.6°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 | 8.5°C | -3.6°C | 118 mm | 8.7 | 9 h 58 | 5 | Good coverage |
| February | 9.9°C | -2.8°C | 137 mm | 9.1 | 10 h 49 | 5 | Good coverage |
| March | 16.2°C | 1.9°C | 140 mm | 9.7 | 11 h 51 | 30 | Good coverage |
| April | 21.8°C | 7°C | 137 mm | 9.4 | 13 h 03 | 58 | Good coverage |
| May | 25.7°C | 12.1°C | 147 mm | 9.5 | 14 h 03 | 68 | Good coverage |
| June | 30.4°C | 17°C | 101 mm | 8.3 | 14 h 35 | 61 | Good coverage |
| July | 31.6°C | 18.9°C | 123 mm | 8 | 14 h 22 | 51 | Good coverage |
| August | 31.7°C | 18.2°C | 88 mm | 6.4 | 13 h 31 | 58 | Good coverage |
| September | 28.5°C | 14.4°C | 108 mm | 6.4 | 12 h 22 | 71 | Good coverage |
| October | 22.1°C | 7.5°C | 92 mm | 6.9 | 11 h 13 | 69 | Good coverage |
| November | 16.2°C | 1.4°C | 104 mm | 7.8 | 10 h 13 | 36 | Good coverage |
| December | 10.9°C | -1.3°C | 130 mm | 9.5 | 9 h 44 | 8 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 24.4°C2 Jan 2022 | -20.6°C17 Jan 2003 | 102 mm30 Jan 2010 | 260 mm2022 · driest 34 mm in 2005 | 19 |
| February | 24.4°C24 Feb 2012 | -22.2°C21 Feb 2021 | 84 mm6 Feb 2004 | 284 mm2003 · driest 47 mm in 2021 | 19 |
| March | 29.4°C26 Mar 2007 | -16.1°C6 Mar 2015 | 76 mm16 Mar 2022 | 226 mm2022 · driest 40 mm in 2003 | 18 |
| April | 31.7°C11 Apr 2011 | -6.7°C8 Apr 2007 | 85 mm29 Apr 2014 | 212 mm2011 · driest 61 mm in 2016 | 19 |
| May | 33.3°C28 May 2012 | -1.1°C7 May 2021 | 224 mm2 May 2010 | 443 mm2010 · driest 24 mm in 2022 | 18 |
| June | 41.7°C30 Jun 2012 | 1.7°C6 Jun 2003 | 66 mm6 Jun 2003 | 161 mm2015 · driest 16 mm in 2022 | 17 |
| July | 41.7°C1 Jul 2012 | 8.3°C25 Jul 2019 | 91 mm19 Jul 2014 | 223 mm2013 · driest 55 mm in 2003 | 18 |
| August | 41.1°C17 Aug 2007 | 7.8°C15 Aug 2004 | 79 mm30 Aug 2005 | 216 mm2018 · driest 18 mm in 2010 | 19 |
| September | 37.8°C4 Sep 2011 | 2.8°C24 Sep 2012 | 119 mm13 Sep 2020 | 226 mm2009 · driest 7 mm in 2010 | 18 |
| October | 36.7°C6 Oct 2019 | -4.4°C28 Oct 2001 | 103 mm19 Oct 2004 | 184 mm2014 · driest 1 mm in 2005 | 19 |
| November | 31.1°C5 Nov 2016 | -11.1°C29 Nov 2013 | 67 mm29 Nov 2001 | 159 mm2011 · driest 23 mm in 2009 | 20 |
| December | 24.4°C12 Dec 2007 | -16.1°C14 Dec 2010 | 82 mm10 Dec 2008 | 225 mm2018 · driest 44 mm in 2003 | 20 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 20 | 4 | <1 |
| February | 0 | 0 | 19 | 4 | 1 |
| March | 3 | 0 | 11 | 4 | <1 |
| April | 9 | <1 | 3 | 4 | 0 |
| May | 17 | 5 | <1 | 4 | 0 |
| June | 25 | 17 | 0 | 3 | 0 |
| July | 26 | 21 | 0 | 4 | 0 |
| August | 26 | 20 | 0 | 3 | 0 |
| September | 22 | 10 | 0 | 3 | 0 |
| October | 9 | 1 | 3 | 3 | 0 |
| November | 1 | <1 | 13 | 3 | <1 |
| December | 0 | 0 | 17 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 28% | 14% | 33% | 5.6–11.6°C |
| February | 5% | 33% | 16% | 33% | 6.4–12.9°C |
| March | 26% | 32% | 15% | 38% | 13.7–19.9°C |
| April | 45% | 30% | 15% | 37% | 20.3–23.4°C |
| May | 61% | 31% | 13% | 41% | 24.0–27.7°C |
| June | 74% | 28% | 12% | 30% | 28.9–32.0°C |
| July | 74% | 25% | 13% | 28% | 29.7–33.0°C |
| August | 78% | 22% | 10% | 21% | 29.9–32.9°C |
| September | 75% | 22% | 11% | 20% | 26.5–30.0°C |
| October | 52% | 22% | 10% | 20% | 20.2–24.4°C |
| November | 21% | 26% | 11% | 29% | 13.5–18.8°C |
| December | 4% | 30% | 15% | 37% | 7.8–14.3°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