Weather on September 21
San Angelo, TX
55 Years of Data
Avg High
88°F
Avg Low
62°F
Warmest
2017
87°F avg
Coldest
1991
52°F avg
About This Date
September 21st in San Angelo, TX typically brings warm fall weather, with average highs around 88°F and lows near 62°F — a 26°F daily swing. Over 55 years of records, the warmest September 21st was in 2017 (87°F average), while the coldest was 1991 (52°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 22% of September 21st dates historically, with the wettest September 21st recording 6.22" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in San Angelo, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 68° | 82° | — | — |
| 2024 | 96° | 75° | 86° | — | — |
| 2023 | 93° | 73° | 83° | — | — |
| 2022 | 95° | 67° | 81° | — | — |
| 2021 | 86° | 65° | 75° | — | — |
| 2020 | 80° | 55° | 68° | 0.13" | — |
| 2019 | 93° | 76° | 84° | — | — |
| 2018 | 82° | 68° | 75° | 4.7" | — |
| 2017warmest | 99° | 76° | 87° | — | — |
| 2016 | 95° | 65° | 80° | — | — |
| 2015 | 95° | 64° | 80° | — | — |
| 2014 | 85° | 70° | 77° | — | — |
| 2013 | 80° | 60° | 70° | — | — |
| 2012 | 96° | 64° | 80° | — | — |
| 2011 | 97° | 63° | 80° | 0.79" | — |
| 2010 | 90° | 68° | 79° | — | — |
| 2009 | 95° | 67° | 81° | — | — |
| 2008 | 87° | 55° | 71° | — | — |
| 2007 | 91° | 63° | 77° | — | — |
| 2006 | 92° | 69° | 80° | — | — |
| 2005 | 93° | 61° | 77° | — | — |
| 2004 | 89° | 71° | 80° | — | — |
| 2003 | 80° | 63° | 71° | — | — |
| 2002 | 93° | 58° | 75° | — | — |
| 2001 | 95° | 61° | 78° | 0.08" | — |
| 2000 | 96° | 58° | 77° | — | — |
| 1999 | 89° | 53° | 71° | — | — |
| 1998 | 96° | 66° | 81° | — | — |
| 1997 | 93° | 60° | 77° | — | — |
| 1996 | 91° | 62° | 77° | — | — |
| 1995 | 76° | 61° | 68° | 0.71" | — |
| 1994 | 90° | 61° | 75° | — | — |
| 1993 | 93° | 69° | 81° | — | — |
| 1992 | 94° | 68° | 81° | — | — |
| 1991coldest | 58° | 47° | 52° | 0.03" | — |
| 1990 | 84° | 65° | 74° | 2.57" | — |
| 1989 | 87° | 58° | 72° | — | — |
| 1988 | 92° | 59° | 75° | — | — |
| 1987 | 79° | 53° | 66° | — | — |
| 1986 | 89° | 67° | 78° | — | — |
| 1985 | 87° | 66° | 77° | 0.08" | — |
| 1984 | 83° | 57° | 70° | — | — |
| 1983 | 77° | 43° | 60° | — | — |
| 1982 | 82° | 53° | 68° | — | — |
| 1981 | 90° | 57° | 73° | — | — |
| 1980 | 91° | 70° | 80° | — | — |
| 1979 | 85° | 56° | 70° | — | — |
| 1978 | 89° | 60° | 75° | — | — |
| 1977 | 98° | 66° | 82° | — | — |
| 1976 | 76° | 56° | 66° | 0.05" | — |
| 1975 | 78° | 56° | 67° | 1.09" | — |
| 1974 | 69° | 64° | 67° | 3.84" | — |
| 1973 | 89° | 67° | 78° | — | — |
| 1972 | 93° | 63° | 78° | 6.22" | — |
| 1971 | 72° | 45° | 58° | — | — |
55 years of data from SAN ANGELO DAM