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Brownsville, TX Weather on April 21
April 21st in Brownsville, TX typically brings warm spring weather, with average highs around 85°F and lows near 68°F. Over 55 years of records, the warmest April 21st was in 1984 (86°F average), while the coldest was 1982 (67°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 13% of April 21st dates historically, with the wettest April 21st recording 3" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on April 21
Planning for April 21st in Brownsville, TX? Stay hydrated and seek shade during peak afternoon hours.
April 21 Weather Records for Brownsville
- •The all-time record high for April 21st in Brownsville, TX is 98°F, set in 1984.
- •The coldest April 21st on record dropped to 53°F in 1986.
- •Temperatures have reached 90°F or higher on April 21st in 7 of the last 55 years.
Frequently Asked Questions
What was the warmest April 21 ever in Brownsville?
The warmest April 21 in Brownsville, TX reached 98°F in 1984. That is 13°F above the long-term average high of 85°F.
What was the coldest April 21 ever in Brownsville?
The coldest April 21 in Brownsville, TX dropped to 53°F in 1986. That is 15°F below the long-term average low of 68°F.
What is the average temperature on April 21 in Brownsville?
On April 21, Brownsville averages a high of 85°F and a low of 68°F based on 55 years of NOAA weather observations from WFO BROWNSVILLE.
How many years of weather data are available for April 21 in Brownsville?
We have 55 years of weather records for April 21 in Brownsville, TX, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 21 Weather History in Brownsville
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 85°F | 75°F | 0.66" | -- |
| 2024 | 87°F | 67°F | 0.25" | -- |
| 2023 | 88°F | 73°F | 0.03" | -- |
| 2022 | 86°F | 75°F | 0" | -- |
| 2021 | 74°F | 60°F | 0" | -- |
| 2020 | 87°F | 75°F | 0" | -- |
| 2019 | 85°F | 67°F | 0" | -- |
| 2018 | 82°F | 71°F | 0" | -- |
| 2017 | 88°F | 71°F | 0" | -- |
| 2016 | 86°F | 70°F | 0.03" | -- |
| 2015 | 80°F | 69°F | 0" | -- |
| 2014 | 84°F | 67°F | 0" | -- |
| 2013 | 83°F | 58°F | 0" | -- |
| 2012 | 84°F | 60°F | 0" | -- |
| 2011 | 90°F | 78°F | 0" | -- |
| 2010 | 80°F | 62°F | 0" | -- |
| 2009 | 91°F | 55°F | 0" | -- |
| 2008 | 84°F | 73°F | 0" | -- |
| 2007 | 83°F | 68°F | 0" | -- |
| 2006 | 90°F | 76°F | 0" | -- |
| 2005 | 87°F | 73°F | 0" | -- |
| 2004 | 84°F | 72°F | 0" | -- |
| 2003 | 79°F | 72°F | 0" | -- |
| 2002 | 92°F | 75°F | 0" | -- |
| 2001 | 89°F | 74°F | 0" | -- |
| 2000 | 84°F | 66°F | 0" | -- |
| 1999 | 82°F | 71°F | 0" | -- |
| 1998 | 80°F | 59°F | 0" | -- |
| 1997 | 84°F | 71°F | 0" | -- |
| 1996 | 89°F | 72°F | 0" | -- |
| 1995 | 90°F | 72°F | 0" | -- |
| 1994 | 81°F | 62°F | 0" | -- |
| 1993 | 78°F | 55°F | 0" | -- |
| 1992 | 81°F | 58°F | 0" | -- |
| 1991 | 84°F | 69°F | 0" | -- |
| 1990 | 86°F | 70°F | 0" | -- |
| 1989 | 88°F | 64°F | 0" | -- |
| 1988 | 81°F | 68°F | 0" | -- |
| 1987 | 84°F | 70°F | 0" | -- |
| 1986 | 86°F | 53°F | 0" | -- |
| 1985 | 87°F | 75°F | 0" | -- |
| 1984 | 98°F | 73°F | 0" | -- |
| 1983 | 86°F | 70°F | 0" | -- |
| 1982 | 72°F | 62°F | 0" | -- |
| 1981 | 86°F | 73°F | 0" | -- |
| 1980 | 81°F | 55°F | 0" | -- |
| 1979 | 81°F | 65°F | 3" | -- |
| 1978 | 81°F | 57°F | 0" | -- |
| 1977 | 85°F | 69°F | 1.88" | -- |
| 1976 | 84°F | 65°F | 0" | -- |
| 1975 | 91°F | 70°F | 0" | -- |
| 1974 | 85°F | 73°F | 0" | -- |
| 1973 | 87°F | 75°F | 0" | -- |
| 1972 | 85°F | 68°F | 0.03" | -- |
| 1971 | 86°F | 67°F | 0" | -- |
Based on 55 years of data from NOAA station: WFO BROWNSVILLE
Monthly Climate Averages
Historical temperature and precipitation averages for Brownsville, TX, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.