Weather on March 21
Arlington, TX
55 Years of Data
About This Date
March 21st in Arlington, TX typically brings pleasant spring weather, with average highs around 71°F and lows near 47°F. Over 36 years of records, the warmest March 21st was in 2026 (76°F average), while the coldest was 1996 (40°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 22% of March 21st dates historically, with the wettest March 21st recording 1.14" of rain. The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Arlington, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 91° | 61° | 76° | — | — |
| 2025 | 79° | 42° | 60° | — | — |
| 2024 | 64° | 55° | 60° | 0.41" | — |
| 2023 | 69° | 51° | 60° | 0.01" | — |
| 2022 | 74° | 53° | 63° | 1.14" | — |
| 2021 | 72° | 46° | 59° | — | — |
| 2020 | 61° | 44° | 52° | 0.3" | — |
| 2019 | 78° | 39° | 59° | — | — |
| 2018 | 71° | 35° | 53° | — | — |
| 2017 | 84° | 61° | 72° | — | — |
| 2016 | 67° | 32° | 49° | — | — |
| 2015 | 63° | 54° | 58° | 0.06" | — |
| 2014 | 81° | 52° | 66° | — | — |
| 2013 | 69° | 50° | 60° | — | — |
| 2012 | 64° | 49° | 56° | — | — |
| 2011 | 83° | 63° | 73° | — | — |
| 2010 | 48° | 32° | 40° | — | — |
| 2009 | 79° | 53° | 66° | — | — |
| 2008 | 77° | 48° | 63° | 0.03" | — |
| 2007 | 80° | 65° | 72° | — | — |
| 2006 | 59° | 39° | 49° | — | — |
| 2005 | 81° | 59° | 70° | 0.06" | — |
| 2004 | 70° | 50° | 60° | — | — |
| 2003 | 65° | 47° | 56° | — | — |
| 2002 | 65° | 37° | 51° | — | — |
| 2001 | 74° | 38° | 56° | — | — |
| 2000 | 64° | 54° | 59° | 0.77" | — |
| 1999 | 72° | 39° | 55° | — | — |
| 1998 | 62° | 34° | 48° | — | — |
| 1997 | 73° | 47° | 60° | — | — |
| 1996coldest | 54° | 27° | 40° | — | — |
| 1995 | 80° | 50° | 65° | — | — |
| 1994 | 86° | 53° | 70° | — | — |
| 1993 | 58° | 47° | 52° | — | — |
| 1992 | 66° | 42° | 54° | — | — |
| 1991 | 71° | 50° | 61° | — | — |
Arlington, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Arlington, TX Monthly Precipitation
Average rainfall per month, in inches.
Arlington, 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 Arlington, TX
Most pleasant months in Arlington, TX: March, April, October, November.
What to expect on March 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.
March 21st outlook →