Weather on May 21
Lowell, MA
55 Years of Data
Avg High
73°F
Avg Low
47°F
Warmest
1975
78°F avg
Coldest
2002
46°F avg
About This Date
May 21st in Lowell, MA typically brings pleasant spring weather, with average highs around 73°F and lows near 47°F — a 26°F daily swing. Over 55 years of records, the warmest May 21st was in 1975 (78°F average), while the coldest was 2002 (46°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 21st dates historically, with the wettest May 21st recording 3.4" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Lowell, MA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 60° | 46° | 53° | 0.05" | — |
| 2024 | 74° | 52° | 63° | — | — |
| 2023 | 68° | 50° | 59° | 3.4" | — |
| 2022 | 75° | 54° | 64° | — | — |
| 2021 | 81° | 50° | 65° | — | — |
| 2020 | 79° | 39° | 59° | — | — |
| 2019 | 85° | 55° | 70° | — | — |
| 2018 | 79° | 48° | 63° | 0.15" | — |
| 2017 | 72° | 43° | 57° | — | — |
| 2016 | 75° | 44° | 60° | — | — |
| 2015 | 62° | 38° | 50° | — | — |
| 2014 | 74° | 45° | 59° | — | — |
| 2013 | 82° | 56° | 69° | — | — |
| 2012 | 83° | 47° | 65° | — | — |
| 2011 | 65° | 51° | 58° | 0.03" | — |
| 2010 | 85° | 48° | 66° | — | — |
| 2009 | 84° | 38° | 61° | — | — |
| 2008 | 68° | 43° | 55° | — | — |
| 2007 | 63° | 47° | 55° | 0.89" | — |
| 2006 | 66° | 48° | 57° | — | — |
| 2005 | 71° | 41° | 56° | — | — |
| 2004 | 80° | 54° | 67° | — | — |
| 2003 | 87° | 46° | 67° | — | — |
| 2002coldest | 58° | 34° | 46° | — | — |
| 2001 | 74° | 46° | 60° | — | — |
| 2000 | 63° | 38° | 50° | — | — |
| 1999 | 67° | 42° | 54° | 0.38" | — |
| 1998 | 83° | 47° | 65° | — | — |
| 1997 | 72° | 39° | 55° | 0.05" | — |
| 1996 | 93° | 58° | 75° | — | — |
| 1995 | 73° | 42° | 58° | — | — |
| 1994 | 62° | 34° | 48° | — | — |
| 1993 | 58° | 48° | 53° | 0.03" | — |
| 1992 | 85° | 41° | 63° | — | — |
| 1991 | 78° | 42° | 60° | — | — |
| 1990 | 53° | 42° | 48° | 1.27" | — |
| 1989 | 92° | 49° | 70° | — | — |
| 1988 | 58° | 50° | 54° | — | — |
| 1987 | 65° | 39° | 52° | — | — |
| 1986 | 76° | 61° | 68° | 1.52" | — |
| 1985 | 76° | 60° | 68° | 2.21" | — |
| 1984 | 78° | 52° | 65° | 0.2" | — |
| 1983 | 78° | 57° | 68° | 0.15" | — |
| 1982 | 73° | 47° | 60° | — | — |
| 1981 | 75° | 40° | 57° | — | — |
| 1980 | 55° | 47° | 51° | 0.3" | — |
| 1979 | 61° | 48° | 54° | 0.64" | — |
| 1978 | 89° | 60° | 75° | 0.25" | — |
| 1977 | 83° | 45° | 64° | — | — |
| 1976 | 57° | 38° | 47° | 0.08" | — |
| 1975warmest | 91° | 64° | 78° | — | — |
| 1974 | 65° | 39° | 52° | — | — |
| 1973 | 68° | 45° | 56° | 3.25" | — |
| 1972 | 56° | 45° | 50° | 1.65" | — |
| 1971 | 71° | 48° | 60° | — | — |
55 years of data from LOWELL