Weather on August 21
Deltona, FL
55 Years of Data
Avg High
92°F
Avg Low
73°F
Warmest
2021
87°F avg
Coldest
1991
75°F avg
About This Date
August 21st in Deltona, FL typically brings hot summer weather, with average highs around 92°F and lows near 73°F. Over 55 years of records, the warmest August 21st was in 2021 (87°F average), while the coldest was 1991 (75°F) — a 12°F range across recorded history. Rain or other precipitation has occurred on about 62% of August 21st dates historically, with the wettest August 21st recording 9.25" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Deltona, FL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 78° | 85° | 0.74" | — |
| 2024 | 94° | 77° | 85° | 0.25" | — |
| 2023 | 91° | 78° | 85° | 0.36" | — |
| 2022 | 95° | 73° | 84° | 0.3" | — |
| 2021warmest | 98° | 76° | 87° | 0.51" | — |
| 2020 | 94° | 74° | 84° | 2.67" | — |
| 2019 | 92° | 76° | 84° | 0.15" | — |
| 2018 | 94° | 73° | 83° | — | — |
| 2017 | 91° | 77° | 84° | 0.25" | — |
| 2016 | 95° | 77° | 86° | — | — |
| 2015 | 94° | 74° | 84° | 2.79" | — |
| 2014 | 97° | 76° | 86° | — | — |
| 2013 | 92° | 76° | 84° | — | — |
| 2012 | 94° | 73° | 83° | 0.79" | — |
| 2011 | 92° | 76° | 84° | — | — |
| 2010 | 93° | 74° | 83° | 7.9" | — |
| 2009 | 96° | 74° | 85° | 1.75" | — |
| 2008 | 78° | 74° | 76° | 8.76" | — |
| 2007 | 93° | 76° | 84° | — | — |
| 2006 | 94° | 71° | 82° | 0.2" | — |
| 2005 | 96° | 76° | 86° | 0.1" | — |
| 2004 | 91° | 72° | 81° | 3.35" | — |
| 2003 | 89° | 73° | 81° | 0.03" | — |
| 2002 | 90° | 73° | 81° | — | — |
| 2001 | 95° | 74° | 84° | 0.1" | — |
| 2000 | 95° | 74° | 84° | 0.15" | — |
| 1999 | 90° | 72° | 81° | — | — |
| 1998 | 85° | 71° | 78° | 0.43" | — |
| 1997 | 96° | 76° | 86° | — | — |
| 1996 | 89° | 71° | 80° | 2.39" | — |
| 1995 | 92° | 72° | 82° | 2.54" | — |
| 1994 | 93° | 74° | 83° | 1.57" | — |
| 1993 | 99° | 72° | 85° | — | — |
| 1992 | 92° | 69° | 80° | 9.25" | — |
| 1991coldest | 79° | 72° | 75° | 0.38" | — |
| 1990 | 93° | 71° | 82° | 3.63" | — |
| 1989 | 84° | 74° | 79° | — | — |
| 1988 | 88° | 76° | 82° | — | — |
| 1987 | 97° | 73° | 85° | 0.23" | — |
| 1986 | 83° | 69° | 76° | 2.29" | — |
| 1985 | 92° | 71° | 81° | 1.32" | — |
| 1984 | 88° | 72° | 80° | 1.07" | — |
| 1983 | 94° | 73° | 83° | — | — |
| 1982 | 92° | 72° | 82° | — | — |
| 1981 | 91° | 73° | 82° | 1.35" | — |
| 1980 | 94° | 74° | 84° | — | — |
| 1979 | 93° | 73° | 83° | — | — |
| 1978 | 91° | 71° | 81° | — | — |
| 1977 | 88° | 76° | 82° | 0.2" | — |
| 1976 | 88° | 70° | 79° | — | — |
| 1975 | 91° | 71° | 81° | 0.69" | — |
| 1974 | 89° | — | — | — | — |
| 1973 | 94° | 71° | 82° | — | — |
| 1972 | 92° | 71° | 81° | 0.13" | — |
| 1971 | 95° | 72° | 83° | — | — |
55 years of data from SANFORD