Weather on October 21
Hartford, CT
55 Years of Data
Avg High
63°F
Avg Low
40°F
Warmest
2016
69°F avg
Coldest
1972
29°F avg
About This Date
October 21st in Hartford, CT typically brings mild fall weather, with average highs around 63°F and lows near 40°F. Over 55 years of records, the warmest October 21st was in 2016 (69°F average), while the coldest was 1972 (29°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 29% of October 21st dates historically, with the wettest October 21st recording 5.72" of rain. The last decade has been 7.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.4°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Hartford, CT? Great weather for outdoor activities.
Warming Trend
2.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 45° | 56° | — | — |
| 2024 | 82° | 41° | 62° | — | — |
| 2023 | 62° | 54° | 58° | 1.02" | — |
| 2022 | 65° | 33° | 49° | — | — |
| 2021 | 75° | 52° | 63° | — | — |
| 2020 | 74° | 57° | 65° | — | — |
| 2019 | 68° | 47° | 57° | — | — |
| 2018 | 51° | 34° | 42° | 0.13" | — |
| 2017 | 81° | 42° | 61° | — | — |
| 2016warmest | 79° | 60° | 69° | 0.25" | — |
| 2015 | 74° | 52° | 63° | — | — |
| 2014 | 66° | 43° | 54° | — | — |
| 2013 | 67° | 39° | 53° | — | — |
| 2012 | 65° | 43° | 54° | — | — |
| 2011 | 62° | 50° | 56° | — | — |
| 2010 | 60° | 39° | 50° | 0.1" | — |
| 2009 | 64° | 43° | 53° | — | — |
| 2008 | 59° | 33° | 46° | 0.03" | — |
| 2007 | 75° | 51° | 63° | — | — |
| 2006 | 56° | 37° | 46° | — | — |
| 2005 | 56° | 37° | 46° | — | — |
| 2004 | 54° | 41° | 47° | — | — |
| 2003 | 70° | 49° | 59° | 0.18" | — |
| 2002 | 55° | 33° | 44° | — | — |
| 2001 | 73° | 38° | 55° | — | — |
| 2000 | 73° | 45° | 59° | — | — |
| 1999 | 60° | 39° | 50° | — | — |
| 1998 | 66° | 41° | 54° | — | — |
| 1997 | 64° | 38° | 51° | — | — |
| 1996 | 53° | 34° | 43° | 1.45" | — |
| 1995 | 73° | 51° | 62° | 3.96" | — |
| 1994 | 68° | 45° | 56° | — | — |
| 1993 | 50° | 48° | 49° | 1.14" | — |
| 1992 | 55° | 31° | 43° | — | — |
| 1991 | 51° | 31° | 41° | — | — |
| 1990 | 64° | 34° | 49° | — | — |
| 1989 | 70° | 42° | 56° | 5.72" | — |
| 1988 | 54° | 29° | 41° | — | — |
| 1987 | 65° | 43° | 54° | 0.61" | — |
| 1986 | 63° | 33° | 48° | — | — |
| 1985 | 60° | 29° | 44° | — | — |
| 1984 | 81° | 39° | 60° | — | — |
| 1983 | 53° | 27° | 40° | — | — |
| 1982 | 70° | 39° | 54° | 0.23" | — |
| 1981 | 60° | 35° | 48° | — | — |
| 1980 | 55° | 32° | 44° | — | — |
| 1979 | 72° | 56° | 64° | — | — |
| 1978 | 58° | 37° | 47° | — | — |
| 1977 | 54° | 41° | 47° | 1.14" | — |
| 1976 | 63° | 39° | 51° | 4.78" | — |
| 1975 | 50° | 45° | 47° | 0.03" | — |
| 1974 | 43° | 29° | 36° | — | — |
| 1973 | 60° | 36° | 48° | 0.03" | — |
| 1972coldest | 40° | 19° | 29° | — | — |
| 1971 | 69° | 40° | 54° | — | — |
55 years of data from HARTFORD BRAINARD FLD