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Indianapolis, IN Weather on April 20
Indianapolis hits 85°F on April 20, 2002—a spring record
April 20 in Indianapolis has seen dramatic temperature swings over 55 years of records. The record high of 85°F in 2002 stands 20 degrees above the average high of 65°F, demonstrating the potential for unusually warm spring weather. Meanwhile, the record low of 25°F set in 1983 shows how late freezes can still grip the region, creating a 60-degree spread between extremes on this date.
What to Expect on April 20
Planning for April 20th in Indianapolis, IN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Frequently Asked Questions
What was the warmest April 20 ever in Indianapolis?
The warmest April 20 in Indianapolis, IN reached 85°F in 2002. That is 20°F above the long-term average high of 65°F.
What was the coldest April 20 ever in Indianapolis?
The coldest April 20 in Indianapolis, IN dropped to 25°F in 1983. That is 19°F below the long-term average low of 44°F.
What is the average temperature on April 20 in Indianapolis?
On April 20, Indianapolis averages a high of 65°F and a low of 44°F based on 55 years of NOAA weather observations from INDIANAPOLIS SE SIDE.
How many years of weather data are available for April 20 in Indianapolis?
We have 55 years of weather records for April 20 in Indianapolis, IN, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 20 Weather History in Indianapolis
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 49°F | 0" | -- |
| 2024 | 52°F | 40°F | 0" | -- |
| 2023 | 83°F | 60°F | 0" | -- |
| 2022 | 62°F | 40°F | 0" | -- |
| 2021 | 42°F | 30°F | 1.22" | 3.5" |
| 2020 | 64°F | 36°F | 0" | -- |
| 2019 | 44°F | 35°F | 1.6" | -- |
| 2018 | 61°F | 30°F | 0" | -- |
| 2017 | 79°F | 59°F | 1.6" | -- |
| 2016 | 81°F | 53°F | 0" | -- |
| 2015 | 59°F | 45°F | 0.51" | -- |
| 2014 | 77°F | 40°F | 0" | -- |
| 2013 | 39°F | 31°F | 0.13" | -- |
| 2012 | 75°F | 54°F | 0" | -- |
| 2011 | 69°F | 40°F | 7.9" | -- |
| 2010 | 62°F | 41°F | 0" | -- |
| 2009 | 57°F | 48°F | 1.02" | -- |
| 2008 | 56°F | 42°F | 0.05" | -- |
| 2007 | 57°F | 36°F | 0.2" | -- |
| 2006 | 76°F | 53°F | 0" | -- |
| 2005 | 77°F | 62°F | 0" | -- |
| 2004 | 76°F | 51°F | 0" | -- |
| 2003 | 72°F | 47°F | 0.76" | -- |
| 2002 | 85°F | 58°F | 0" | -- |
| 2001 | 68°F | 39°F | 0.2" | -- |
| 2000 | 70°F | 53°F | 0.03" | -- |
| 1999 | 62°F | 36°F | 0" | -- |
| 1998 | 55°F | 36°F | 0" | -- |
| 1997 | 54°F | 36°F | 0" | -- |
| 1996 | 69°F | 39°F | -- | -- |
| 1995 | 51°F | 42°F | 0.08" | -- |
| 1994 | 64°F | 47°F | 0.15" | -- |
| 1993 | 66°F | 34°F | 0.66" | -- |
| 1992 | 72°F | 55°F | 0.15" | -- |
| 1991 | 47°F | 42°F | 0.66" | -- |
| 1990 | 60°F | 42°F | 0.2" | -- |
| 1989 | 58°F | 36°F | 0" | -- |
| 1988 | 53°F | 34°F | 0" | -- |
| 1987 | 77°F | 49°F | 0" | -- |
| 1986 | 66°F | 44°F | 0.79" | -- |
| 1985 | 83°F | 60°F | 0" | -- |
| 1984 | 48°F | 34°F | 0.05" | -- |
| 1983 | 42°F | 25°F | 0" | -- |
| 1982 | 67°F | 47°F | 0.03" | -- |
| 1981 | 60°F | 46°F | 0.53" | -- |
| 1980 | 74°F | 42°F | 0" | -- |
| 1979 | 65°F | 42°F | 0" | -- |
| 1978 | 55°F | 43°F | 0.46" | -- |
| 1977 | 72°F | 60°F | 0.2" | -- |
| 1976 | 75°F | 57°F | 0.18" | -- |
| 1975 | 57°F | 39°F | 0.13" | -- |
| 1974 | 63°F | 43°F | 0" | -- |
| 1973 | 72°F | 55°F | 0.46" | -- |
| 1972 | 76°F | 55°F | 1.4" | -- |
| 1971 | 76°F | 48°F | 0" | -- |
Based on 55 years of data from NOAA station: INDIANAPOLIS SE SIDE
How Has April 20 Changed?
The last decade has been 3.4°F cooler on this date compared to 20-30 years ago.
Monthly Climate Averages
Historical temperature and precipitation averages for Indianapolis, IN, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.