Weather on September 21
Broken Arrow, OK
55 Years of Data
Avg High
83°F
Avg Low
60°F
Warmest
1980
88°F avg
Coldest
1983
48°F avg
About This Date
September 21st in Broken Arrow, OK typically brings warm fall weather, with average highs around 83°F and lows near 60°F. Over 55 years of records, the warmest September 21st was in 1980 (88°F average), while the coldest was 1983 (48°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 27% of September 21st dates historically, with the wettest September 21st recording 11.23" of rain. The last decade has been 8.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.8°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Broken Arrow, OK? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 66° | 73° | 2.13" | — |
| 2024 | 98° | 74° | 86° | — | — |
| 2023 | 88° | 69° | 78° | — | — |
| 2022 | 99° | 77° | 88° | — | — |
| 2021 | 80° | 60° | 70° | 0.15" | — |
| 2020 | 83° | 57° | 70° | 0.03" | — |
| 2019 | 87° | 74° | 80° | 0.64" | — |
| 2018 | 81° | 63° | 72° | 5.94" | — |
| 2017 | 94° | 77° | 85° | — | — |
| 2016 | 93° | 72° | 82° | — | — |
| 2015 | 84° | 62° | 73° | — | — |
| 2014 | 84° | 60° | 72° | 0.89" | — |
| 2013 | 80° | 52° | 66° | — | — |
| 2012 | 95° | 64° | 80° | — | — |
| 2011 | 80° | 57° | 69° | 0.33" | — |
| 2010 | 89° | 72° | 80° | — | — |
| 2009 | 88° | 63° | 75° | 11.23" | — |
| 2008 | 84° | 61° | 72° | — | — |
| 2007 | 88° | 67° | 77° | — | — |
| 2006 | 78° | 62° | 70° | 0.23" | — |
| 2005 | 95° | 66° | 81° | — | — |
| 2004 | 90° | 58° | 74° | — | — |
| 2003 | 74° | 60° | 67° | 0.84" | — |
| 2002 | 88° | 60° | 74° | — | — |
| 2001 | 81° | 61° | 71° | — | — |
| 2000 | 82° | 48° | 65° | — | — |
| 1999 | 67° | 48° | 57° | — | — |
| 1998 | 86° | 71° | 79° | 5.05" | — |
| 1997 | 73° | 60° | 67° | — | — |
| 1996 | 75° | 47° | 61° | — | — |
| 1995 | 64° | 54° | 59° | — | — |
| 1994 | 84° | 56° | 70° | — | — |
| 1993 | 83° | 60° | 71° | — | — |
| 1992 | 87° | 69° | 78° | 0.2" | — |
| 1991 | 65° | 48° | 56° | — | — |
| 1990 | 83° | 68° | 75° | 6.27" | — |
| 1989 | 81° | 53° | 67° | — | — |
| 1988 | 84° | 50° | 67° | — | — |
| 1987 | 78° | 59° | 69° | 0.36" | — |
| 1986 | 88° | 69° | 78° | — | — |
| 1985 | 89° | 66° | 78° | — | — |
| 1984 | 86° | 47° | 66° | — | — |
| 1983coldest | 57° | 39° | 48° | — | — |
| 1982 | 72° | 40° | 56° | — | — |
| 1981 | 91° | 60° | 76° | — | — |
| 1980warmest | 98° | 78° | 88° | — | — |
| 1979 | 77° | 56° | 66° | — | — |
| 1978 | 95° | 52° | 73° | — | — |
| 1977 | 82° | 53° | 68° | — | — |
| 1976 | 76° | 44° | 60° | — | — |
| 1975 | 75° | 46° | 61° | — | — |
| 1974 | 72° | 54° | 63° | — | — |
| 1973 | 86° | 65° | 75° | — | — |
| 1972 | 96° | 63° | 79° | 0.71" | — |
| 1971 | 67° | 44° | 55° | — | — |
55 years of data from BIXBY