Weather on August 21
Hartford, CT
55 Years of Data
Avg High
81°F
Avg Low
61°F
Warmest
2005
82°F avg
Coldest
1984
60°F avg
About This Date
August 21st in Hartford, CT typically brings warm summer weather, with average highs around 81°F and lows near 61°F. Over 55 years of records, the warmest August 21st was in 2005 (82°F average), while the coldest was 1984 (60°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 31% of August 21st dates historically, with the wettest August 21st recording 7.01" 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 August 21st in Hartford, CT? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 54° | 62° | 0.03" | — |
| 2024 | 75° | 52° | 63° | 0.08" | — |
| 2023 | 86° | 65° | 75° | — | — |
| 2022 | 85° | 69° | 77° | — | — |
| 2021 | 86° | 71° | 79° | — | — |
| 2020 | 90° | 63° | 76° | — | — |
| 2019 | 85° | 69° | 77° | 7.01" | — |
| 2018 | 79° | 59° | 69° | — | — |
| 2017 | 87° | 61° | 74° | — | — |
| 2016 | 87° | 71° | 79° | 3.68" | — |
| 2015 | 77° | 69° | 73° | 0.56" | — |
| 2014 | 79° | 64° | 71° | — | — |
| 2013 | 88° | 62° | 75° | — | — |
| 2012 | 82° | 64° | 73° | — | — |
| 2011 | 86° | 69° | 78° | 0.05" | — |
| 2010 | 80° | 57° | 69° | — | — |
| 2009 | 91° | 73° | 82° | 0.79" | — |
| 2008 | 80° | 53° | 67° | — | — |
| 2007 | 65° | 58° | 61° | 0.86" | — |
| 2006 | 80° | 63° | 71° | — | — |
| 2005warmest | 93° | 71° | 82° | 0.2" | — |
| 2004 | 82° | 63° | 72° | 6.86" | — |
| 2003 | 89° | 66° | 78° | — | — |
| 2002 | 82° | 59° | 71° | — | — |
| 2001 | 85° | 68° | 76° | 0.03" | — |
| 2000 | 77° | 48° | 63° | — | — |
| 1999 | 63° | 59° | 61° | 0.84" | — |
| 1998 | 89° | 51° | 70° | — | — |
| 1997 | 71° | 57° | 64° | 4.83" | — |
| 1996 | 79° | 64° | 71° | — | — |
| 1995 | 93° | 51° | 72° | — | — |
| 1994 | 82° | 66° | 74° | 3.99" | — |
| 1993 | 79° | 67° | 73° | 0.05" | — |
| 1992 | 78° | 52° | 65° | — | — |
| 1991 | 83° | 65° | 74° | — | — |
| 1990 | 73° | 57° | 65° | 0.03" | — |
| 1989 | 82° | 70° | 76° | — | — |
| 1988 | 77° | 56° | 66° | — | — |
| 1987 | 83° | 56° | 69° | — | — |
| 1986 | 81° | 64° | 72° | — | — |
| 1985 | 77° | 59° | 68° | — | — |
| 1984coldest | 77° | 43° | 60° | — | — |
| 1983 | 95° | 59° | 77° | — | — |
| 1982 | 84° | 58° | 71° | — | — |
| 1981 | 81° | 50° | 65° | — | — |
| 1980 | 70° | 59° | 64° | — | — |
| 1979 | 77° | 61° | 69° | — | — |
| 1978 | 85° | 57° | 71° | — | — |
| 1977 | 74° | 52° | 63° | — | — |
| 1976 | 87° | 63° | 75° | — | — |
| 1975 | 77° | 51° | 64° | — | — |
| 1974 | 88° | 62° | 75° | — | — |
| 1973 | 80° | 58° | 69° | 0.13" | — |
| 1972 | 83° | 56° | 69° | — | — |
| 1971 | 86° | 64° | 75° | — | — |
55 years of data from HARTFORD BRAINARD FLD