Weather on April 21
Round Rock, TX
55 Years of Data
About This Date
April 21st in Round Rock, TX typically brings warm spring weather, with average highs around 80°F and lows near 57°F. Over 54 years of records, the warmest April 21st was in 2011 (79°F average), while the coldest was 1982 (57°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 33% of April 21st dates historically, with the wettest April 21st recording 10.19" of rain. The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 60° | 55° | 58° | — | — |
| 2025 | 83° | 54° | 68° | 0.43" | — |
| 2024 | 66° | 48° | 57° | 1.27" | — |
| 2023 | 86° | 61° | 73° | 10.19" | — |
| 2022 | 81° | 68° | 74° | — | — |
| 2021 | 82° | 42° | 62° | — | — |
| 2020 | 86° | 62° | 74° | — | — |
| 2019 | 83° | 46° | 64° | — | — |
| 2018 | 71° | 56° | 63° | 0.08" | — |
| 2017 | 84° | 67° | 75° | — | — |
| 2016 | 79° | 58° | 68° | 0.51" | — |
| 2015 | 71° | 48° | 60° | — | — |
| 2014 | 74° | 60° | 67° | — | — |
| 2013 | 73° | 47° | 60° | — | — |
| 2012 | 75° | 51° | 63° | 0.03" | — |
| 2011warmest | 88° | 70° | 79° | — | — |
| 2010 | 77° | 53° | 65° | — | — |
| 2009 | 82° | 54° | 68° | — | — |
| 2008 | 78° | 57° | 68° | — | — |
| 2007 | 77° | 53° | 65° | — | — |
| 2005 | 81° | 65° | 73° | 0.05" | — |
| 2004 | 78° | 66° | 72° | 0.05" | — |
| 2003 | 78° | 55° | 67° | — | — |
| 2002 | 87° | 70° | 78° | — | — |
| 2001 | 78° | 67° | 72° | — | — |
| 2000 | 84° | 52° | 68° | — | — |
| 1999 | 87° | 64° | 76° | — | — |
| 1998 | 79° | 51° | 65° | 0.84" | — |
| 1997 | 87° | 56° | 71° | 1.27" | — |
| 1996 | 89° | 60° | 75° | — | — |
| 1995 | 79° | 53° | 66° | — | — |
| 1994 | 77° | 61° | 69° | 0.1" | — |
| 1993 | 71° | 45° | 58° | — | — |
| 1992 | 74° | 40° | 57° | — | — |
| 1991 | 73° | 50° | 62° | — | — |
| 1990 | 83° | 67° | 75° | — | — |
| 1989 | 83° | 58° | 70° | — | — |
| 1988 | 88° | 56° | 72° | — | — |
| 1987 | 89° | 63° | 76° | — | — |
| 1986 | 78° | 56° | 67° | — | — |
| 1985 | 82° | 60° | 71° | 0.71" | — |
| 1984 | 93° | 63° | 78° | — | — |
| 1982coldest | 60° | 54° | 57° | 3.81" | — |
| 1981 | 85° | 63° | 74° | — | — |
| 1980 | 84° | 50° | 67° | — | — |
| 1979 | 68° | 57° | 63° | 0.05" | — |
| 1978 | 82° | 44° | 63° | — | — |
| 1977 | 74° | 59° | 66° | 0.43" | — |
| 1976 | 79° | 47° | 63° | — | — |
| 1975 | 74° | 58° | 66° | — | — |
| 1974 | 84° | 69° | 77° | 0.08" | — |
| 1973 | 82° | 70° | 76° | — | — |
| 1972 | 87° | 65° | 76° | 0.71" | — |
| 1971 | 87° | 44° | 66° | 0.08" | — |
Round Rock, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Round Rock, TX Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Round Rock, TX 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 Round Rock, TX
Round Rock, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.