October
October · April · May
United States · 1991–2020
October leads for comfortable weather in Louisville: typically 24.3°C by day, 11.3°C at night, with 98 mm of rain. Based on measured 1991–2020 NOAA station history.
October · April · May
September · June · August
October · November · March
The weakest month is January, scoring 19 against October’s 81 — days reach only 12.3°C, 12° below the 24°C the score treats as ideal, and nights drop to 0.7°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 | 12.3°C | 0.7°C | 118 mm | 8 | 10 h 11 | 19 | Strong coverage |
| February | 14.6°C | 2.3°C | 145 mm | 8 | 10 h 57 | 26 | Strong coverage |
| March | 19.7°C | 6.2°C | 145 mm | 8.1 | 11 h 53 | 50 | Strong coverage |
| April | 23.6°C | 10.2°C | 131 mm | 6.8 | 12 h 57 | 73 | Strong coverage |
| May | 27.8°C | 15.5°C | 119 mm | 7.8 | 13 h 51 | 71 | Strong coverage |
| June | 31.5°C | 19.7°C | 97 mm | 7.5 | 14 h 20 | 54 | Strong coverage |
| July | 32.8°C | 21.1°C | 128 mm | 8.7 | 14 h 08 | 42 | Good coverage |
| August | 32.3°C | 20.8°C | 119 mm | 8 | 13 h 22 | 46 | Good coverage |
| September | 29.8°C | 17.4°C | 90 mm | 4.9 | 12 h 20 | 67 | Good coverage |
| October | 24.3°C | 11.3°C | 98 mm | 5.4 | 11 h 18 | 81 | Strong coverage |
| November | 18°C | 5.6°C | 101 mm | 6.6 | 10 h 24 | 51 | Strong coverage |
| December | 13.6°C | 2.4°C | 135 mm | 7.9 | 9 h 58 | 25 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 28.9°C23 Jan 1943 | -19.4°C3 Jan 1919 | 142 mm6 Jan 1950 | 461 mm1974 · driest 20 mm in 1986 | 123 |
| February | 30.6°C24 Feb 1996 | -25.0°C13 Feb 1899 | 160 mm1 Feb 1896 | 404 mm1903 · driest 18 mm in 2000 | 124 |
| March | 33.3°C24 Mar 1929 | -11.1°C9 Mar 1996 | 133 mm28 Mar 1951 | 327 mm1980 · driest 6 mm in 1910 | 124 |
| April | 33.3°C22 Apr 1987 | -3.3°C4 Apr 1987 | 260 mm13 Apr 1979 | 612 mm1979 · driest 13 mm in 2010 | 126 |
| May | 38.3°C31 May 1951 | 2.8°C2 May 1909 | 138 mm19 May 1983 | 346 mm1983 · driest 12 mm in 1963 | 124 |
| June | 40.6°C28 Jun 1954 | 6.1°C1 Jun 1894 | 89 mm1 Jun 1892 | 357 mm1900 · driest 6 mm in 1977 | 125 |
| July | 41.7°C13 Jul 1930 | 11.1°C15 Jul 1967 | 164 mm30 Jul 1946 | 331 mm1940 · driest 8 mm in 2000 | 124 |
| August | 41.7°C27 Aug 1943 | 7.8°C25 Aug 1891 | 173 mm30 Aug 2005 | 359 mm1901 · driest 10 mm in 1954 | 124 |
| September | 41.1°C6 Sep 1925 | 2.8°C29 Sep 1967 | 190 mm7 Sep 1977 | 436 mm2009 · driest 0 mm in 1998 | 122 |
| October | 36.1°C1 Oct 1926 | -4.4°C31 Oct 1917 | 171 mm17 Oct 2006 | 270 mm2006 · driest 0 mm in 1904 | 124 |
| November | 31.1°C1 Nov 2016 | -12.2°C25 Nov 1950 | 109 mm28 Nov 1948 | 332 mm1948 · driest 0 mm in 1903 | 124 |
| December | 28.3°C2 Dec 1922 | -19.4°C23 Dec 1989 | 151 mm23 Dec 1990 | 385 mm1961 · driest 9 mm in 1896 | 124 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | 15 | 4 |
| February | 1 | 0 | 12 | 4 |
| March | 7 | <1 | 5 | 4 |
| April | 15 | 2 | <1 | 3 |
| May | 24 | 10 | 0 | 4 |
| June | 28 | 22 | 0 | 3 |
| July | 31 | 27 | 0 | 4 |
| August | 30 | 26 | 0 | 4 |
| September | 28 | 17 | 0 | 3 |
| October | 16 | 3 | <1 | 3 |
| November | 2 | <1 | 5 | 3 |
| December | <1 | 0 | 12 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 12% | 27% | 14% | 28% | 9.2–16.6°C |
| February | 18% | 28% | 16% | 30% | 11.0–18.6°C |
| March | 39% | 26% | 15% | 26% | 16.2–22.3°C |
| April | 62% | 23% | 13% | 24% | 21.9–25.9°C |
| May | 75% | 24% | 12% | 24% | 26.0–29.7°C |
| June | 76% | 24% | 11% | 26% | 29.4–34.0°C |
| July | 71% | 29% | 14% | 33% | 31.0–34.6°C |
| August | 76% | 24% | 10% | 23% | 30.8–34.8°C |
| September | 81% | 19% | 9% | 16% | 27.8–33.1°C |
| October | 73% | 15% | 8% | 12% | 22.7–27.4°C |
| November | 38% | 21% | 11% | 18% | 16.1–21.4°C |
| December | 12% | 25% | 14% | 26% | 11.1–16.6°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