Weather on April 21
Louisville, KY
55 Years of Data
Avg High
68°F
Avg Low
49°F
Warmest
1973
73°F avg
Coldest
2021
41°F avg
About This Date
April 21st in Louisville, KY typically brings mild spring weather, with average highs around 68°F and lows near 49°F. Over 55 years of records, the warmest April 21st was in 1973 (73°F average), while the coldest was 2021 (41°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 44% of April 21st dates historically, with the wettest April 21st recording 4.19" of rain. The last decade has been 5.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.1°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Louisville, KY? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 57° | 65° | 0.2" | — |
| 2024 | 56° | 39° | 47° | — | — |
| 2023 | 72° | 48° | 60° | 1.75" | — |
| 2022 | 70° | 55° | 62° | 0.64" | — |
| 2021coldest | 49° | 33° | 41° | 0.33" | — |
| 2020 | 63° | 45° | 54° | — | — |
| 2019 | 72° | 37° | 54° | — | — |
| 2018 | 70° | 43° | 56° | — | — |
| 2017 | 72° | 52° | 62° | 0.76" | — |
| 2016 | 73° | 58° | 65° | 0.76" | — |
| 2015 | 66° | 43° | 54° | — | — |
| 2014 | 81° | 52° | 66° | — | — |
| 2013 | 61° | 39° | 50° | — | — |
| 2012 | 53° | 47° | 50° | 0.53" | — |
| 2011 | 62° | 42° | 52° | — | — |
| 2010 | 72° | 44° | 58° | — | — |
| 2009 | 53° | 43° | 48° | 0.13" | — |
| 2008 | 73° | 46° | 60° | — | — |
| 2007 | 77° | 43° | 60° | — | — |
| 2006 | 66° | 58° | 62° | 1.98" | — |
| 2005 | 76° | 57° | 66° | — | — |
| 2004 | 70° | 56° | 63° | 1.24" | — |
| 2003 | 62° | 51° | 57° | — | — |
| 2002 | 79° | 59° | 69° | 2.26" | — |
| 2001 | 75° | 65° | 70° | — | — |
| 2000 | 55° | 44° | 50° | 0.03" | — |
| 1999 | 82° | 57° | 70° | — | — |
| 1998 | 59° | 47° | 53° | — | — |
| 1997 | 59° | 50° | 55° | 0.97" | — |
| 1996 | 76° | 53° | 64° | — | — |
| 1995 | 76° | 61° | 68° | 0.66" | — |
| 1994 | 68° | 49° | 58° | 0.03" | — |
| 1993 | 50° | 39° | 45° | 0.1" | — |
| 1992 | 72° | 53° | 62° | 0.23" | — |
| 1991 | 52° | 45° | 48° | — | — |
| 1990 | 72° | 57° | 64° | 1.24" | — |
| 1989 | 75° | 47° | 61° | — | — |
| 1988 | 68° | 48° | 58° | — | — |
| 1987 | 86° | 55° | 71° | — | — |
| 1986 | 57° | 40° | 48° | 0.64" | — |
| 1985 | 85° | 56° | 70° | — | — |
| 1984 | 51° | 48° | 50° | 4.19" | — |
| 1983 | 62° | 35° | 49° | — | — |
| 1982 | 55° | 35° | 45° | — | — |
| 1981 | 64° | 34° | 49° | — | — |
| 1980 | 78° | 52° | 65° | — | — |
| 1979 | 81° | 57° | 69° | — | — |
| 1978 | 47° | 39° | 43° | — | — |
| 1977 | 73° | 63° | 68° | 0.1" | — |
| 1976 | 75° | 60° | 68° | 0.71" | — |
| 1975 | 63° | 39° | 51° | — | — |
| 1974 | 73° | 62° | 68° | — | — |
| 1973warmest | 83° | 64° | 73° | — | — |
| 1972 | 66° | 51° | 59° | 3.45" | — |
| 1971 | 79° | 52° | 65° | 0.46" | — |
55 years of data from LOUISVILLE BOWMAN FLD