Weather on August 21
Louisville, KY
55 Years of Data
About This Date
August 21st in Louisville, KY typically brings warm summer weather, with average highs around 86°F and lows near 67°F. Over 56 years of records, the warmest August 21st was in 1983 (89°F average), while the coldest was 2024 (64°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 21% of August 21st dates historically, with the wettest August 21st recording 1.37" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 21st in Louisville, KY? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 87° | 67° | 77° | — | — |
| 2025 | 79° | 66° | 72° | — | — |
| 2024coldest | 77° | 51° | 64° | — | — |
| 2023 | 93° | 72° | 82° | — | — |
| 2022 | 80° | 70° | 75° | 0.15" | — |
| 2021 | 90° | 67° | 78° | — | — |
| 2020 | 83° | 66° | 74° | 0.31" | — |
| 2019 | 92° | 69° | 80° | — | — |
| 2018 | 83° | 72° | 77° | 0.08" | — |
| 2017 | 92° | 71° | 81° | — | — |
| 2016 | 82° | 64° | 73° | — | — |
| 2015 | 81° | 58° | 69° | — | — |
| 2014 | 89° | 72° | 80° | — | — |
| 2013 | 89° | 69° | 79° | — | — |
| 2012 | 83° | 58° | 70° | 0.09" | — |
| 2011 | 91° | 75° | 83° | — | — |
| 2010 | 88° | 73° | 80° | 0.61" | — |
| 2009 | 82° | 67° | 74° | — | — |
| 2008 | 91° | 73° | 82° | — | — |
| 2007 | 87° | 72° | 79° | 1.37" | — |
| 2006 | 83° | 63° | 73° | — | — |
| 2005 | 92° | 72° | 82° | — | — |
| 2004 | 80° | 63° | 71° | — | — |
| 2003 | 91° | 75° | 83° | — | — |
| 2002 | 92° | 68° | 80° | — | — |
| 2001 | 85° | 58° | 71° | — | — |
| 2000 | 84° | 61° | 72° | — | — |
| 1999 | 87° | 61° | 74° | — | — |
| 1998 | 90° | 63° | 76° | — | — |
| 1997 | 77° | 62° | 70° | — | — |
| 1996 | 90° | 73° | 81° | 0.3" | — |
| 1995 | 92° | 75° | 83° | — | — |
| 1994 | 81° | 64° | 72° | 0.02" | — |
| 1993 | 86° | 66° | 76° | — | — |
| 1992 | 83° | 60° | 71° | — | — |
| 1991 | 87° | 63° | 75° | — | — |
| 1990 | 89° | 73° | 81° | 1.12" | — |
| 1989 | 81° | 71° | 76° | 0.42" | — |
| 1988 | 88° | 72° | 80° | — | — |
| 1987 | 92° | 67° | 79° | — | — |
| 1986 | 89° | 68° | 79° | — | — |
| 1985 | 79° | 60° | 69° | — | — |
| 1984 | 87° | 60° | 74° | — | — |
| 1983warmest | 100° | 77° | 89° | — | — |
| 1982 | 79° | 64° | 71° | — | — |
| 1981 | 82° | 62° | 72° | — | — |
| 1980 | 94° | 74° | 84° | — | — |
| 1979 | 85° | 68° | 76° | 0.07" | — |
| 1978 | 81° | 59° | 70° | — | — |
| 1977 | 85° | 62° | 73° | 0.56" | — |
| 1976 | 86° | 63° | 74° | — | — |
| 1975 | 92° | 71° | 81° | — | — |
| 1974 | 85° | 67° | 76° | — | — |
| 1973 | 77° | 60° | 69° | — | — |
| 1972 | 89° | 65° | 77° | — | — |
| 1971 | 90° | 70° | 80° | — | — |
Louisville, KY Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Louisville, KY Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Louisville, KY Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Louisville, KY
Most pleasant months in Louisville, KY: April, May, September, October.
What to expect on August 21st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
August 21st outlook →