All-time weather records — Lowell, MA

Record high
102.9°F
June 25, 2025
Record low
-29.0°F
February 16, 1943
Wettest day
6.97 in
September 11, 1954

Climate change signal in Lowell

13.9%

of Lowell's all-time daily heat records were set in the last decade (51 of 366 records since 2015).

3.6%

of all-time daily cold records were set in the last decade (13 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1880s
1
2
1890s
13
47
1900s
14
44
1910s
21
41
1920s
9
51
1930s
16
33
1940s
38
17
1950s
52
9
1960s
27
17
1970s
3
3
1980s
7
33
1990s
45
41
2000s
51
11
2010s
36
14
2020s
33
3

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1889, the latest in 2026. Period of observation: 1885-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 7, 2007 -22.0°F — Jan 28, 1904 3.60 in — Jan 26, 1979
February 77.0°F — Feb 22, 2018 -29.0°F — Feb 16, 1943 3.61 in — Feb 1, 1898
March 89.1°F — Mar 29, 1998 -14.1°F — Mar 9, 1923 2.92 in — Mar 3, 1947
April 96.1°F — Apr 18, 2002 1.0°F — Apr 2, 2023 4.82 in — Apr 30, 1904
May 98.1°F — May 22, 1911 27.0°F — May 2, 1892 4.09 in — May 29, 1906
June 102.9°F — Jun 25, 2025 33.1°F — Jun 13, 2004 4.60 in — Jun 19, 1922
July 102.9°F — Jul 5, 1911 37.9°F — Jul 20, 1997 5.49 in — Jul 3, 1915
August 102.9°F — Aug 26, 1948 37.9°F — Aug 30, 1986 5.48 in — Aug 20, 1991
September 100.0°F — Sep 2, 1953 26.1°F — Sep 20, 1979 6.97 in — Sep 11, 1954
October 89.1°F — Oct 7, 1963 19.0°F — Oct 31, 2020 6.33 in — Oct 14, 1895
November 81.0°F — Nov 2, 1950 1.0°F — Nov 24, 1989 4.62 in — Nov 25, 1923
December 75.9°F — Dec 8, 1998 -20.0°F — Dec 30, 1917 2.74 in — Dec 19, 1986

Click a month to see every daily record for that month in Lowell.