Weather on March 21
Richardson, TX
55 Years of Data
About This Date
March 21st in Richardson, TX typically brings pleasant spring weather, with average highs around 70°F and lows near 48°F. Over 56 years of records, the warmest March 21st was in 1991 (75°F average), while the coldest was 2010 (36°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 21% of March 21st dates historically, with the wettest March 21st recording 5.08" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Richardson, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 90° | 59° | 74° | — | — |
| 2025 | 75° | 46° | 61° | — | — |
| 2024 | 65° | 52° | 58° | 4.57" | — |
| 2023 | 65° | 48° | 56° | 0.23" | — |
| 2022 | 71° | 55° | 63° | 5.08" | — |
| 2021 | 67° | 44° | 55° | — | — |
| 2020 | 59° | 39° | 49° | 0.38" | — |
| 2019 | 75° | 48° | 62° | — | — |
| 2018 | 71° | 40° | 55° | — | — |
| 2017 | 83° | 61° | 72° | — | — |
| 2016 | 64° | 33° | 49° | — | — |
| 2015 | 62° | 52° | 57° | 0.13" | — |
| 2014 | 79° | 51° | 65° | — | — |
| 2013 | 69° | 51° | 60° | — | — |
| 2012 | 65° | 51° | 58° | — | — |
| 2011 | 81° | 63° | 72° | — | — |
| 2010coldest | 43° | 29° | 36° | 0.74" | — |
| 2009 | 76° | 55° | 65° | — | — |
| 2008 | 74° | 49° | 61° | — | — |
| 2007 | 76° | 65° | 70° | 0.03" | — |
| 2006 | 57° | 39° | 48° | — | — |
| 2005 | 80° | 60° | 70° | 0.18" | — |
| 2004 | 71° | 52° | 61° | — | — |
| 2003 | 63° | 47° | 55° | — | — |
| 2002 | 65° | 37° | 51° | — | — |
| 2001 | 74° | 42° | 58° | — | — |
| 2000 | 68° | 55° | 62° | 2.62" | — |
| 1999 | 71° | 41° | 56° | — | — |
| 1998 | 61° | 35° | 48° | — | — |
| 1997 | 90° | 52° | 71° | — | — |
| 1996 | 70° | 33° | 51° | — | — |
| 1995 | 81° | 56° | 68° | — | — |
| 1994 | 73° | 51° | 62° | — | — |
| 1993 | 67° | 49° | 58° | — | — |
| 1992 | 65° | 55° | 60° | — | — |
| 1991warmest | 84° | 66° | 75° | — | — |
| 1990 | 60° | 44° | 52° | — | — |
| 1989 | 47° | 32° | 39° | 0.97" | — |
| 1988 | 80° | 51° | 66° | — | — |
| 1987 | 78° | 59° | 69° | — | — |
| 1986 | 60° | 36° | 48° | — | — |
| 1985 | 59° | 50° | 55° | — | — |
| 1984 | 75° | 43° | 59° | — | — |
| 1983 | 57° | 33° | 45° | — | — |
| 1982 | 68° | 47° | 57° | 3" | — |
| 1981 | 77° | 51° | 64° | — | — |
| 1980 | 70° | 46° | 58° | — | — |
| 1979 | 76° | 62° | 69° | 0.64" | — |
| 1978 | 79° | 58° | 68° | — | — |
| 1977 | 66° | 38° | 52° | — | — |
| 1976 | 71° | 41° | 56° | — | — |
| 1975 | 82° | 62° | 72° | — | — |
| 1974 | 51° | 32° | 42° | — | — |
| 1973 | 59° | 43° | 51° | — | — |
| 1972 | 78° | 58° | 68° | — | — |
| 1971 | 82° | 52° | 67° | — | — |
Richardson, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Richardson, TX Monthly Precipitation
Average rainfall per month, in inches.
Richardson, 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 Richardson, TX
Richardson, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.