Weather on March 21
Hartford, CT
55 Years of Data
Avg High
50°F
Avg Low
30°F
Warmest
2012
64°F avg
Coldest
1986
22°F avg
About This Date
March 21st in Hartford, CT typically brings cool spring weather, with average highs around 50°F and lows near 30°F. Over 56 years of records, the warmest March 21st was in 2012 (64°F average), while the coldest was 1986 (22°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 36% of March 21st dates historically, with the wettest March 21st recording 2.46" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Hartford, CT? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 53° | 37° | 45° | — | — |
| 2025 | 49° | 39° | 44° | 0.53" | — |
| 2024 | 41° | 28° | 35° | — | — |
| 2023 | 63° | 26° | 45° | — | — |
| 2022 | 61° | 42° | 51° | — | — |
| 2021 | 65° | 27° | 46° | — | — |
| 2020 | 54° | 35° | 44° | — | — |
| 2019 | 48° | 31° | 40° | 0.03" | — |
| 2018 | 41° | 33° | 37° | 0.03" | — |
| 2017 | 56° | 30° | 43° | — | — |
| 2016 | 50° | 31° | 41° | 0.41" | — |
| 2015 | 45° | 27° | 36° | 0.33" | — |
| 2014 | 47° | 26° | 37° | — | — |
| 2013 | 37° | 27° | 32° | — | — |
| 2012warmest | 74° | 55° | 64° | — | — |
| 2011 | 39° | 34° | 36° | 0.43" | — |
| 2010 | 70° | 44° | 57° | — | — |
| 2009 | 49° | 27° | 38° | — | — |
| 2008 | 42° | 31° | 37° | — | — |
| 2007 | 40° | 20° | 30° | — | — |
| 2006 | 44° | 21° | 33° | — | — |
| 2005 | 44° | 28° | 36° | 0.51" | — |
| 2004 | 49° | 29° | 39° | 0.28" | — |
| 2003 | 64° | 40° | 52° | 1.27" | — |
| 2002 | 53° | 28° | 41° | 0.05" | — |
| 2001 | 51° | 34° | 42° | 2.46" | — |
| 2000 | 44° | 36° | 40° | — | — |
| 1999 | 47° | 5° | 26° | — | — |
| 1998 | 47° | 32° | 39° | 0.1" | — |
| 1997 | 42° | 12° | 27° | 0.15" | — |
| 1996 | 46° | 37° | 42° | — | — |
| 1995 | 53° | 32° | 43° | — | — |
| 1994 | 50° | 33° | 42° | 1.85" | — |
| 1993 | 40° | 30° | 35° | 0.18" | — |
| 1992 | 32° | 21° | 27° | — | — |
| 1991 | 53° | 32° | 43° | — | — |
| 1990 | 45° | 38° | 41° | 0.94" | — |
| 1989 | 41° | 23° | 32° | 1.27" | — |
| 1988 | 40° | 14° | 27° | — | — |
| 1987 | 48° | 33° | 41° | — | — |
| 1986coldest | 34° | 10° | 22° | — | — |
| 1985 | 64° | 28° | 46° | — | — |
| 1984 | 52° | 35° | 43° | — | — |
| 1983 | 57° | 36° | 46° | — | — |
| 1982 | 54° | 36° | 45° | — | — |
| 1981 | 41° | 21° | 31° | — | — |
| 1980 | 66° | 40° | 53° | 0.18" | — |
| 1979 | 56° | 39° | 47° | — | — |
| 1978 | 45° | 29° | 37° | — | — |
| 1977 | 46° | 25° | 35° | 0.41" | — |
| 1976 | 72° | 49° | 60° | — | — |
| 1975 | 56° | 29° | 42° | 0.33" | — |
| 1974 | 49° | 29° | 39° | — | — |
| 1973 | 45° | 27° | 36° | — | — |
| 1972 | 54° | 28° | 41° | — | — |
| 1971 | 42° | 32° | 37° | — | — |
56 years of data from HARTFORD BRAINARD FLD