Weather on May 21
Houston, TX
55 Years of Data
Avg High
86°F
Avg Low
71°F
Warmest
2022
87°F avg
Coldest
1983
69°F avg
About This Date
May 21st in Houston, TX typically brings warm spring weather, with average highs around 86°F and lows near 71°F. Over 55 years of records, the warmest May 21st was in 2022 (87°F average), while the coldest was 1983 (69°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 20% of May 21st dates historically, with the wettest May 21st recording 4.98" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Houston, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 77° | 81° | — | — |
| 2024 | 91° | 80° | 86° | — | — |
| 2023 | 81° | 71° | 76° | — | — |
| 2022warmest | 93° | 80° | 87° | — | — |
| 2021 | 84° | 72° | 78° | 0.18" | — |
| 2020 | 90° | 76° | 83° | — | — |
| 2019 | 90° | 78° | 84° | — | — |
| 2018 | 87° | 71° | 79° | 4.98" | — |
| 2017 | 88° | 74° | 81° | 0.51" | — |
| 2016 | 86° | 71° | 79° | 3" | — |
| 2015 | 84° | 72° | 78° | — | — |
| 2014 | 86° | 69° | 78° | — | — |
| 2013 | 89° | 77° | 83° | — | — |
| 2012 | 89° | 73° | 81° | — | — |
| 2011 | 91° | 76° | 83° | — | — |
| 2010 | 89° | 74° | 81° | — | — |
| 2009 | 83° | 60° | 71° | — | — |
| 2008 | 98° | 73° | 86° | — | — |
| 2007 | 84° | 64° | 74° | — | — |
| 2006 | 89° | 71° | 80° | — | — |
| 2005 | 92° | 74° | 83° | — | — |
| 2004 | 87° | 74° | 80° | — | — |
| 2003 | 90° | 71° | 80° | — | — |
| 2002 | 80° | 58° | 69° | — | — |
| 2001 | 90° | 62° | 76° | — | — |
| 2000 | 90° | 72° | 81° | — | — |
| 1999 | 88° | 72° | 80° | — | — |
| 1998 | 90° | 73° | 81° | — | — |
| 1997 | 88° | 69° | 78° | — | — |
| 1996 | 94° | 72° | 83° | — | — |
| 1995 | 83° | 66° | 74° | — | — |
| 1994 | 84° | 65° | 74° | — | — |
| 1993 | 83° | 63° | 73° | — | — |
| 1992 | 84° | 73° | 79° | — | — |
| 1991 | 84° | 73° | 79° | — | — |
| 1990 | 94° | 75° | 84° | — | — |
| 1989 | 85° | 73° | 79° | — | — |
| 1988 | 79° | 62° | 70° | 1.96" | — |
| 1987 | 84° | 70° | 77° | — | — |
| 1986 | 80° | 64° | 72° | — | — |
| 1985 | 84° | 61° | 72° | 1.3" | — |
| 1984 | 85° | 67° | 76° | 0.05" | — |
| 1983coldest | 73° | 64° | 69° | 2.08" | — |
| 1982 | 84° | 72° | 78° | — | — |
| 1981 | 76° | 64° | 70° | — | — |
| 1980 | 87° | 74° | 80° | — | — |
| 1979 | 84° | 74° | 79° | 0.03" | — |
| 1978 | 88° | 74° | 81° | — | — |
| 1977 | 80° | 65° | 72° | 1.73" | — |
| 1976 | 85° | 68° | 76° | — | — |
| 1975 | 84° | 76° | 80° | — | — |
| 1974 | 82° | 71° | 77° | 0.1" | — |
| 1973 | 88° | 72° | 80° | — | — |
| 1972 | 90° | 69° | 79° | — | — |
| 1971 | 84° | 69° | 77° | — | — |
55 years of data from HOUSTON WB CITY