September
September · May · June
United States · 1991–2020
September leads for comfortable weather in Radcliff: typically 26.7°C by day, 13.9°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.
September · May · June
August · July · June
October · April · September
The weakest month is January, scoring 5 against September’s 78 — days reach only 6°C, 18° 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 | 6°C | -3.8°C | 107 mm | 9.7 | 9 h 48 | 5 | Good coverage |
| February | 8.9°C | -2.1°C | 89 mm | 8 | 10 h 44 | 7 | Good coverage |
| March | 14.1°C | 1.6°C | 129 mm | 10.6 | 11 h 50 | 23 | Good coverage |
| April | 20.1°C | 7°C | 156 mm | 10.7 | 13 h 07 | 49 | Good coverage |
| May | 24.3°C | 12°C | 163 mm | 11.1 | 14 h 11 | 68 | Good coverage |
| June | 28.4°C | 16.8°C | 116 mm | 9.5 | 14 h 46 | 65 | Good coverage |
| July | 30°C | 18.8°C | 123 mm | 8.4 | 14 h 32 | 56 | Good coverage |
| August | 30.1°C | 18.2°C | 103 mm | 6.8 | 13 h 37 | 61 | Good coverage |
| September | 26.7°C | 13.9°C | 90 mm | 7 | 12 h 23 | 78 | Good coverage |
| October | 20.9°C | 7.4°C | 100 mm | 7.1 | 11 h 09 | 63 | Good coverage |
| November | 14°C | 2.1°C | 93 mm | 7.8 | 10 h 05 | 32 | Good coverage |
| December | 7.5°C | -2.4°C | 117 mm | 10.2 | 9 h 33 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.1°C23 Jan 1999 | -30.0°C19 Jan 1994 | 80 mm10 Jan 2008 | 219 mm2006 · driest 24 mm in 2003 | 22 |
| February | 24.4°C24 Feb 1996 | -21.7°C4 Feb 1996 | 67 mm24 Feb 2011 | 167 mm2011 · driest 42 mm in 2002 | 22 |
| March | 27.8°C25 Mar 2007 | -13.9°C4 Mar 2002 | 122 mm1 Mar 1997 | 347 mm1997 · driest 50 mm in 2010 | 21 |
| April | 31.7°C27 Apr 1989 | -6.1°C7 Apr 1990 | 90 mm4 Apr 2008 | 225 mm1998 · driest 39 mm in 1992 | 22 |
| May | 32.2°C25 May 1996 | 0.0°C1 May 2005 | 105 mm2 May 2010 | 307 mm1995 · driest 43 mm in 2007 | 22 |
| June | 34.4°C22 Jun 1994 | 5.6°C1 Jun 1993 | 71 mm17 Jun 2000 | 294 mm1998 · driest 31 mm in 2008 | 22 |
| July | 40.0°C29 Jul 1999 | 10.6°C19 Jul 2009 | 130 mm27 Jul 2010 | 248 mm2004 · driest 17 mm in 1999 | 22 |
| August | 37.8°C16 Aug 2007 | 8.9°C14 Aug 2004 | 96 mm30 Aug 2005 | 238 mm2005 · driest 27 mm in 2008 | 22 |
| September | 35.6°C7 Sep 1990 | 1.7°C26 Sep 2001 | 127 mm22 Sep 2006 | 274 mm2006 · driest 11 mm in 1998 | 21 |
| October | 32.8°C8 Oct 2007 | -3.3°C19 Oct 1992 | 142 mm23 Oct 2007 | 253 mm2007 · driest 8 mm in 2000 | 22 |
| November | 26.7°C2 Nov 2000 | -10.6°C5 Nov 1991 | 52 mm11 Nov 2004 | 194 mm2004 · driest 21 mm in 2009 | 22 |
| December | 22.2°C4 Dec 1998 | -27.2°C22 Dec 1989 | 107 mm16 Dec 2008 | 299 mm1990 · driest 35 mm in 1993 | 22 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 22 | 4 | 1 |
| February | 0 | 0 | 20 | 3 | 1 |
| March | <1 | 0 | 14 | 4 | <1 |
| April | 6 | <1 | 4 | 4 | 0 |
| May | 15 | 2 | <1 | 5 | 0 |
| June | 26 | 11 | 0 | 4 | 0 |
| July | 29 | 17 | 0 | 4 | 0 |
| August | 28 | 17 | 0 | 3 | 0 |
| September | 21 | 7 | 0 | 2 | 0 |
| October | 8 | <1 | 3 | 3 | 0 |
| November | <1 | 0 | 12 | 4 | 0 |
| December | 0 | 0 | 20 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 33% | 13% | 42% | 2.3–9.7°C |
| February | 4% | 31% | 13% | 33% | 4.0–12.7°C |
| March | 14% | 35% | 13% | 43% | 11.2–16.0°C |
| April | 38% | 34% | 15% | 43% | 18.3–21.5°C |
| May | 56% | 36% | 16% | 46% | 22.8–26.3°C |
| June | 68% | 33% | 14% | 37% | 26.1–29.6°C |
| July | 75% | 28% | 13% | 27% | 28.9–31.3°C |
| August | 79% | 23% | 11% | 23% | 28.2–31.8°C |
| September | 76% | 22% | 9% | 19% | 25.1–29.1°C |
| October | 49% | 24% | 9% | 24% | 17.9–22.8°C |
| November | 16% | 27% | 12% | 29% | 11.3–17.3°C |
| December | 2% | 34% | 15% | 43% | 2.0–10.5°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