Boston, MA

42.361°N, 71.010°W · station BOSthr · 1872–2026 · 155 years · normal 43.5 in/yr

The Accumulation Ribbon

Every day of the year at Boston: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (1878) and driest (1965) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 43.5 in

All-Time Extremes

Driest year

23.7in

1965 · mean 42.0 in

Longest dry streak

44 days

< 0.01 in · ended 1924-11-21

Wettest day ever

7.06in

Aug 19, 1955

Wettest year

65.5in

1878 · mean 42.0 in

Longest wet streak

13 days

≥ 0.01 in · ended 1995-01-23

Wettest month ever

17.09in

Aug 1955

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	2.86″ Jan 10, 1881	3.27″	10.55″ 1979
Feb	4.45″ Feb 12, 1886	3.24″	7.94″ 2008
Mar	3.49″ Mar 18, 1968	3.59″	14.87″ 2010
Apr	4.29″ Apr 1, 2004	3.21″	9.57″ 2004
May	4.47″ May 16, 1954	3.08″	13.38″ 1954
Jun	5.69″ Jun 13, 1998	2.71″	13.20″ 1982
Jul	6.04″ Jul 9, 1921	2.93″	11.69″ 1921
Aug	7.06″ Aug 19, 1955	3.06″	17.09″ 1955
Sep	5.63″ Sep 16, 1933	2.57″	10.94″ 1933
Oct	6.11″ Oct 20, 1996	3.14″	10.66″ 1996
Nov	3.85″ Nov 20, 1876	3.40″	11.03″ 1876
Dec	4.21″ Dec 12, 1992	3.52″	9.74″ 1969

Record Daily Rainfall

The heaviest one-day rainfall ever recorded on each calendar date — when Boston's big rains fall.

Year by Year

Driest years

1965	23.71 in
1910	28.33 in
1980	29.39 in
1908	30.07 in
1997	30.39 in

The Full Record

Every day of the year: normal daily precip, the record one-day total with its year, how often it rains, and the cumulative normal. Type to filter, click a column to sort.

Show me the data — the full daily record

Date	Normal	Record 1-day	Yr	Wet-day %	Cum. normal
Jan 1	0.12″	1.40″	1938	37%	0.12″
Jan 2	0.11″	2.24″	1987	39%	0.23″
Jan 3	0.11″	1.51″	1999	40%	0.35″
Jan 4	0.12″	1.57″	1982	32%	0.46″
Jan 5	0.12″	1.66″	1873	34%	0.58″
Jan 6	0.12″	1.76″	1889	41%	0.70″
Jan 7	0.12″	1.67″	1977	43%	0.82″
Jan 8	0.12″	1.47″	1979	39%	0.94″
Jan 9	0.12″	2.14″	1884	37%	1.06″
Jan 10	0.12″	2.86″	1881	36%	1.19″
Jan 11	0.13″	1.41″	2008	34%	1.31″
Jan 12	0.12″	1.65″	1900	45%	1.43″
Jan 13	0.12″	1.44″	2024	38%	1.55″
Jan 14	0.12″	1.23″	1874	37%	1.67″
Jan 15	0.11″	1.79″	1958	38%	1.78″
Jan 16	0.12″	1.22″	2016	34%	1.89″
Jan 17	0.12″	1.25″	1909	35%	2.02″
Jan 18	0.12″	1.41″	1915	39%	2.14″
Jan 19	0.12″	1.81″	1942	35%	2.26″
Jan 20	0.11″	2.05″	1978	35%	2.37″
Jan 21	0.11″	2.52″	1979	40%	2.49″
Jan 22	0.11″	2.00″	1881	36%	2.60″
Jan 23	0.10″	1.48″	1966	41%	2.70″
Jan 24	0.10″	1.53″	1998	35%	2.79″
Jan 25	0.10″	2.08″	1979	42%	2.89″
Jan 26	0.09″	1.18″	1958	34%	2.98″
Jan 27	0.09″	1.82″	1996	40%	3.07″
Jan 28	0.09″	1.68″	1886	39%	3.16″
Jan 29	0.10″	1.27″	1973	36%	3.25″
Jan 30	0.10″	1.01″	1939	35%	3.36″
Jan 31	0.10″	1.02″	1914	36%	3.45″
Feb 1	0.09″	1.14″	2008	37%	3.54″
Feb 2	0.09″	1.29″	1999	40%	3.63″
Feb 3	0.09″	1.42″	1874	42%	3.72″
Feb 4	0.09″	2.55″	1961	41%	3.81″
Feb 5	0.09″	1.77″	1920	36%	3.91″
Feb 6	0.11″	1.40″	1896	35%	4.01″
Feb 7	0.11″	1.93″	1978	45%	4.13″
Feb 8	0.12″	1.52″	1945	37%	4.24″
Feb 9	0.12″	1.67″	1969	34%	4.36″
Feb 10	0.12″	1.73″	1885	34%	4.48″
Feb 11	0.12″	1.67″	1955	36%	4.60″
Feb 12	0.12″	4.45″	1886	29%	4.72″
Feb 13	0.11″	2.66″	2008	37%	4.83″
Feb 14	0.11″	1.62″	2007	38%	4.95″
Feb 15	0.11″	1.56″	1953	39%	5.06″
Feb 16	0.11″	2.64″	1958	34%	5.17″
Feb 17	0.12″	1.60″	1952	37%	5.28″
Feb 18	0.12″	1.91″	1998	37%	5.41″
Feb 19	0.12″	2.40″	1972	37%	5.53″
Feb 20	0.12″	1.87″	1934	33%	5.65″
Feb 21	0.11″	2.45″	1898	35%	5.76″
Feb 22	0.11″	1.84″	1878	41%	5.87″
Feb 23	0.12″	1.36″	1884	39%	5.99″
Feb 24	0.12″	2.42″	1969	32%	6.10″
Feb 25	0.12″	2.15″	1981	41%	6.22″
Feb 26	0.11″	1.75″	1979	38%	6.33″
Feb 27	0.11″	1.37″	2013	35%	6.44″
Feb 28	0.12″	2.01″	1958	37%	6.56″
Feb 29	0.12″	1.72″	1987	37%	6.68″
Mar 1	0.13″	2.30″	2018	37%	6.81″
Mar 2	0.13″	1.40″	1942	39%	6.94″
Mar 3	0.12″	2.64″	1881	41%	7.05″
Mar 4	0.11″	1.27″	1917	39%	7.16″
Mar 5	0.12″	2.15″	1943	45%	7.29″
Mar 6	0.13″	1.91″	1967	39%	7.42″
Mar 7	0.13″	1.85″	1933	35%	7.55″
Mar 8	0.14″	2.14″	1998	38%	7.69″
Mar 9	0.13″	2.14″	1881	37%	7.82″
Mar 10	0.13″	1.94″	1901	36%	7.95″
Mar 11	0.13″	1.44″	1939	41%	8.07″
Mar 12	0.12″	1.83″	1993	41%	8.20″
Mar 13	0.13″	3.40″	2010	41%	8.32″
Mar 14	0.14″	2.11″	2010	40%	8.46″
Mar 15	0.13″	2.15″	1900	34%	8.59″
Mar 16	0.13″	1.77″	2025	34%	8.72″
Mar 17	0.12″	1.58″	1968	36%	8.84″
Mar 18	0.12″	3.49″	1968	35%	8.97″
Mar 19	0.12″	1.58″	1881	45%	9.09″
Mar 20	0.12″	2.07″	1974	46%	9.20″
Mar 21	0.12″	2.59″	2001	38%	9.32″
Mar 22	0.13″	2.22″	2010	32%	9.45″
Mar 23	0.13″	2.28″	2024	32%	9.59″
Mar 24	0.14″	1.50″	1909	32%	9.73″
Mar 25	0.15″	2.56″	1877	35%	9.88″
Mar 26	0.15″	1.55″	1988	31%	10.03″
Mar 27	0.16″	1.32″	1887	40%	10.19″
Mar 28	0.16″	2.43″	1932	39%	10.35″
Mar 29	0.15″	2.93″	2010	44%	10.50″
Mar 30	0.15″	1.89″	1987	41%	10.65″
Mar 31	0.14″	2.02″	1962	38%	10.79″
Apr 1	0.15″	4.29″	2004	39%	10.94″
Apr 2	0.15″	2.30″	1990	44%	11.09″
Apr 3	0.15″	1.90″	1875	40%	11.24″
Apr 4	0.15″	2.61″	1876	45%	11.39″
Apr 5	0.14″	1.60″	1958	41%	11.52″
Apr 6	0.12″	1.24″	1901	37%	11.64″
Apr 7	0.12″	1.20″	1924	39%	11.76″
Apr 8	0.11″	1.72″	1935	41%	11.87″
Apr 9	0.11″	2.08″	1983	37%	11.98″
Apr 10	0.10″	1.70″	1980	30%	12.09″
Apr 11	0.10″	1.44″	1894	41%	12.19″
Apr 12	0.10″	1.76″	1953	38%	12.29″
Apr 13	0.10″	1.97″	2004	28%	12.39″
Apr 14	0.12″	2.05″	1903	36%	12.51″
Apr 15	0.12″	2.50″	1929	39%	12.63″
Apr 16	0.12″	2.47″	1954	39%	12.76″
Apr 17	0.13″	1.90″	1879	31%	12.88″
Apr 18	0.13″	1.65″	1877	40%	13.01″
Apr 19	0.13″	0.87″	1874	32%	13.15″
Apr 20	0.13″	3.32″	1991	31%	13.28″
Apr 21	0.12″	2.30″	2019	39%	13.40″
Apr 22	0.13″	1.50″	2000	43%	13.53″
Apr 23	0.12″	1.95″	1983	37%	13.65″
Apr 24	0.12″	2.10″	1901	36%	13.77″
Apr 25	0.12″	1.60″	1931	37%	13.89″
Apr 26	0.12″	1.50″	1882	42%	14.00″
Apr 27	0.12″	1.71″	1987	34%	14.12″
Apr 28	0.11″	2.97″	1904	37%	14.24″
Apr 29	0.11″	1.81″	2023	34%	14.35″
Apr 30	0.10″	1.82″	1921	32%	14.45″
May 1	0.10″	1.14″	1897	41%	14.55″
May 2	0.10″	2.40″	1900	40%	14.65″
May 3	0.10″	2.71″	1893	39%	14.75″
May 4	0.09″	2.06″	1922	43%	14.84″
May 5	0.10″	1.00″	1998	34%	14.95″
May 6	0.11″	1.50″	1998	35%	15.06″
May 7	0.11″	1.45″	1908	27%	15.17″
May 8	0.12″	2.50″	1954	41%	15.29″
May 9	0.12″	1.43″	1998	41%	15.41″
May 10	0.12″	1.42″	1989	37%	15.53″
May 11	0.13″	0.98″	1895	34%	15.66″
May 12	0.12″	3.84″	2006	35%	15.78″
May 13	0.12″	3.77″	2006	38%	15.90″
May 14	0.11″	1.73″	1978	41%	16.01″
May 15	0.11″	4.47″	1954	38%	16.12″
May 16	0.12″	1.55″	1926	37%	16.24″
May 17	0.12″	1.88″	1916	35%	16.35″
May 18	0.12″	1.55″	1900	42%	16.47″
May 19	0.12″	1.83″	2023	35%	16.59″
May 20	0.11″	2.24″	1889	34%	16.70″
May 21	0.10″	3.11″	2025	34%	16.80″
May 22	0.09″	3.23″	1920	38%	16.89″
May 23	0.09″	1.73″	1951	36%	16.98″
May 24	0.10″	2.63″	1967	37%	17.08″
May 25	0.09″	1.36″	1967	32%	17.17″
May 26	0.10″	1.48″	1961	41%	17.27″
May 27	0.10″	2.39″	1906	34%	17.37″
May 28	0.11″	1.63″	1990	34%	17.48″
May 29	0.12″	0.81″	1983	29%	17.60″
May 30	0.14″	1.52″	1948	35%	17.74″
May 31	0.14″	4.12″	1984	34%	17.88″
Jun 1	0.13″	2.19″	1982	36%	18.01″
Jun 2	0.13″	1.91″	2006	37%	18.14″
Jun 3	0.13″	1.46″	2007	40%	18.27″
Jun 4	0.14″	2.94″	1982	38%	18.40″
Jun 5	0.15″	2.98″	1986	38%	18.56″
Jun 6	0.16″	4.00″	2000	39%	18.71″
Jun 7	0.15″	1.11″	1947	43%	18.87″
Jun 8	0.15″	3.07″	1931	34%	19.02″
Jun 9	0.15″	4.36″	1881	33%	19.17″
Jun 10	0.14″	1.38″	2013	37%	19.32″
Jun 11	0.14″	1.96″	1955	35%	19.46″
Jun 12	0.14″	5.69″	1998	40%	19.59″
Jun 13	0.13″	1.17″	1998	31%	19.72″
Jun 14	0.11″	2.45″	1903	33%	19.84″
Jun 15	0.11″	2.37″	1931	30%	19.95″
Jun 16	0.12″	2.26″	2001	33%	20.07″
Jun 17	0.12″	1.51″	1916	34%	20.19″
Jun 18	0.12″	3.32″	1922	30%	20.30″
Jun 19	0.11″	2.40″	1945	31%	20.41″
Jun 20	0.10″	2.36″	1903	33%	20.52″
Jun 21	0.10″	1.82″	2011	35%	20.62″
Jun 22	0.10″	1.36″	2006	34%	20.72″
Jun 23	0.11″	1.19″	2012	27%	20.83″
Jun 24	0.10″	2.07″	1944	36%	20.93″
Jun 25	0.10″	2.23″	1884	35%	21.03″
Jun 26	0.10″	1.97″	2024	34%	21.13″
Jun 27	0.10″	1.43″	2015	34%	21.24″
Jun 28	0.11″	2.47″	1879	37%	21.34″
Jun 29	0.10″	2.04″	1921	34%	21.44″
Jun 30	0.10″	4.45″	1915	36%	21.54″
Jul 1	0.10″	1.67″	2021	30%	21.64″
Jul 2	0.10″	1.68″	2021	27%	21.74″
Jul 3	0.10″	2.03″	1916	31%	21.84″
Jul 4	0.10″	1.48″	1940	33%	21.94″
Jul 5	0.09″	2.04″	2005	35%	22.04″
Jul 6	0.10″	1.57″	2026	25%	22.13″
Jul 7	0.09″	1.87″	1915	28%	22.23″
Jul 8	0.09″	6.04″	1921	26%	22.32″
Jul 9	0.10″	2.39″	1955	33%	22.41″
Jul 10	0.09″	2.36″	1959	31%	22.51″
Jul 11	0.10″	1.33″	2017	36%	22.60″
Jul 12	0.09″	2.24″	1898	31%	22.70″
Jul 13	0.09″	3.36″	1996	36%	22.78″
Jul 14	0.09″	2.05″	1960	24%	22.87″
Jul 15	0.10″	1.60″	2023	34%	22.97″
Jul 16	0.11″	2.68″	2018	29%	23.08″
Jul 17	0.11″	0.94″	1979	31%	23.20″
Jul 18	0.12″	2.52″	1912	31%	23.31″
Jul 19	0.11″	1.78″	1982	29%	23.42″
Jul 20	0.12″	2.33″	1938	31%	23.54″
Jul 21	0.12″	1.20″	1897	34%	23.66″
Jul 22	0.12″	1.76″	1938	35%	23.78″
Jul 23	0.12″	2.33″	1926	29%	23.89″
Jul 24	0.11″	2.40″	1988	35%	24.01″
Jul 25	0.12″	1.68″	1908	27%	24.12″
Jul 26	0.12″	1.75″	1889	31%	24.24″
Jul 27	0.12″	3.49″	1911	36%	24.36″
Jul 28	0.12″	3.07″	2023	36%	24.48″
Jul 29	0.12″	2.30″	1926	36%	24.60″
Jul 30	0.11″	2.10″	1976	30%	24.71″
Jul 31	0.10″	3.58″	1985	34%	24.81″
Aug 1	0.10″	1.97″	1946	32%	24.91″
Aug 2	0.10″	1.89″	1875	29%	25.02″
Aug 3	0.11″	2.28″	1915	37%	25.12″
Aug 4	0.10″	1.87″	1893	29%	25.23″
Aug 5	0.11″	2.60″	1967	25%	25.33″
Aug 6	0.11″	1.90″	2019	34%	25.44″
Aug 7	0.11″	1.94″	1874	41%	25.55″
Aug 8	0.11″	3.27″	1878	35%	25.66″
Aug 9	0.11″	2.97″	1917	32%	25.77″
Aug 10	0.12″	2.80″	1990	38%	25.88″
Aug 11	0.12″	1.78″	1979	32%	26.00″
Aug 12	0.12″	2.29″	1892	31%	26.12″
Aug 13	0.12″	2.96″	1873	31%	26.24″
Aug 14	0.13″	1.90″	1930	30%	26.37″
Aug 15	0.12″	1.67″	1938	30%	26.49″
Aug 16	0.12″	1.92″	1909	32%	26.61″
Aug 17	0.12″	4.88″	1955	38%	26.74″
Aug 18	0.12″	7.06″	1955	32%	26.85″
Aug 19	0.11″	2.10″	1894	29%	26.96″
Aug 20	0.10″	1.72″	1991	27%	27.07″
Aug 21	0.11″	1.41″	1899	27%	27.18″
Aug 22	0.10″	3.36″	1888	33%	27.28″
Aug 23	0.10″	1.45″	1897	35%	27.38″
Aug 24	0.09″	2.76″	2010	29%	27.47″
Aug 25	0.09″	1.19″	1922	18%	27.55″
Aug 26	0.08″	4.15″	1924	28%	27.64″
Aug 27	0.08″	1.31″	1891	25%	27.72″
Aug 28	0.08″	1.69″	1962	32%	27.80″
Aug 29	0.07″	2.26″	1975	29%	27.87″
Aug 30	0.08″	3.65″	1872	27%	27.95″
Aug 31	0.08″	2.11″	1949	27%	28.02″
Sep 1	0.08″	2.71″	1947	27%	28.10″
Sep 2	0.09″	2.94″	1919	27%	28.19″
Sep 3	0.09″	3.15″	1972	29%	28.28″
Sep 4	0.10″	1.06″	1907	24%	28.38″
Sep 5	0.09″	1.51″	1890	29%	28.47″
Sep 6	0.09″	2.10″	1896	27%	28.56″
Sep 7	0.10″	1.26″	1993	25%	28.66″
Sep 8	0.11″	2.19″	1969	25%	28.77″
Sep 9	0.11″	4.71″	1999	32%	28.89″
Sep 10	0.11″	5.63″	1954	27%	29.00″
Sep 11	0.12″	2.11″	2009	29%	29.12″
Sep 12	0.12″	2.95″	1960	34%	29.24″
Sep 13	0.12″	2.22″	1944	32%	29.36″
Sep 14	0.12″	2.46″	1944	34%	29.48″
Sep 15	0.12″	5.63″	1933	32%	29.60″
Sep 16	0.12″	3.10″	1932	34%	29.72″
Sep 17	0.12″	2.18″	1900	29%	29.84″
Sep 18	0.12″	2.87″	2004	32%	29.95″
Sep 19	0.12″	2.82″	1899	32%	30.07″
Sep 20	0.12″	2.77″	1961	32%	30.20″
Sep 21	0.13″	1.88″	1998	38%	30.32″
Sep 22	0.14″	2.64″	1994	29%	30.46″
Sep 23	0.13″	1.25″	1955	27%	30.59″
Sep 24	0.13″	2.90″	1961	21%	30.72″
Sep 25	0.13″	2.12″	1918	26%	30.84″
Sep 26	0.12″	2.37″	1962	31%	30.96″
Sep 27	0.12″	1.19″	1872	27%	31.08″
Sep 28	0.13″	2.83″	1907	32%	31.21″
Sep 29	0.12″	2.46″	2015	31%	31.33″
Sep 30	0.11″	1.16″	2014	31%	31.44″
Oct 1	0.12″	1.94″	1929	31%	31.56″
Oct 2	0.12″	2.81″	1984	32%	31.68″
Oct 3	0.12″	1.57″	1987	27%	31.80″
Oct 4	0.12″	4.00″	1877	27%	31.92″
Oct 5	0.12″	3.00″	1962	27%	32.04″
Oct 6	0.12″	2.30″	1875	30%	32.16″
Oct 7	0.12″	2.00″	1891	31%	32.28″
Oct 8	0.12″	2.06″	1906	29%	32.40″
Oct 9	0.12″	1.85″	1976	27%	32.52″
Oct 10	0.13″	0.85″	2006	29%	32.65″
Oct 11	0.13″	2.93″	1878	32%	32.77″
Oct 12	0.13″	4.85″	1895	27%	32.90″
Oct 13	0.14″	3.34″	1990	31%	33.04″
Oct 14	0.14″	3.23″	1930	31%	33.18″
Oct 15	0.14″	2.64″	1974	27%	33.32″
Oct 16	0.14″	1.18″	1989	25%	33.46″
Oct 17	0.14″	1.97″	1975	29%	33.60″
Oct 18	0.13″	3.13″	1932	29%	33.73″
Oct 19	0.14″	2.06″	1932	33%	33.87″
Oct 20	0.14″	6.11″	1996	27%	34.02″
Oct 21	0.15″	1.78″	1944	22%	34.16″
Oct 22	0.14″	2.25″	2014	32%	34.30″
Oct 23	0.14″	2.33″	1956	33%	34.45″
Oct 24	0.14″	1.29″	2017	34%	34.59″
Oct 25	0.14″	1.84″	1980	29%	34.73″
Oct 26	0.14″	1.95″	1943	34%	34.88″
Oct 27	0.14″	2.02″	2006	28%	35.02″
Oct 28	0.13″	1.49″	2003	30%	35.15″
Oct 29	0.13″	1.68″	1917	31%	35.27″
Oct 30	0.12″	2.54″	1939	34%	35.40″
Oct 31	0.13″	2.67″	1895	33%	35.52″
Nov 1	0.12″	1.74″	1897	30%	35.65″
Nov 2	0.13″	1.75″	1954	34%	35.78″
Nov 3	0.12″	2.18″	1955	28%	35.90″
Nov 4	0.12″	2.24″	1985	27%	36.01″
Nov 5	0.11″	1.58″	1966	36%	36.12″
Nov 6	0.11″	2.54″	1953	30%	36.23″
Nov 7	0.11″	2.44″	1876	31%	36.34″
Nov 8	0.11″	2.01″	1877	38%	36.45″
Nov 9	0.12″	2.20″	1875	33%	36.56″
Nov 10	0.11″	2.33″	1932	36%	36.68″
Nov 11	0.11″	3.11″	1947	39%	36.79″
Nov 12	0.11″	1.77″	1968	34%	36.90″
Nov 13	0.11″	1.49″	2009	34%	37.01″
Nov 14	0.11″	1.48″	1972	34%	37.12″
Nov 15	0.12″	1.69″	1983	36%	37.24″
Nov 16	0.13″	1.65″	1930	36%	37.36″
Nov 17	0.12″	3.09″	1878	36%	37.49″
Nov 18	0.13″	1.71″	1926	30%	37.62″
Nov 19	0.14″	0.98″	1895	34%	37.76″
Nov 20	0.14″	3.85″	1876	32%	37.89″
Nov 21	0.13″	2.31″	1876	29%	38.02″
Nov 22	0.13″	2.38″	1953	35%	38.16″
Nov 23	0.13″	3.31″	1992	40%	38.29″
Nov 24	0.12″	2.76″	1983	32%	38.41″
Nov 25	0.13″	1.79″	1900	39%	38.54″
Nov 26	0.13″	1.79″	2013	40%	38.67″
Nov 27	0.13″	1.98″	1937	38%	38.80″
Nov 28	0.14″	2.34″	1963	40%	38.95″
Nov 29	0.14″	0.83″	1987	31%	39.09″
Nov 30	0.14″	2.17″	1944	31%	39.23″
Dec 1	0.14″	1.63″	1974	35%	39.37″
Dec 2	0.14″	1.82″	1986	32%	39.51″
Dec 3	0.14″	1.63″	1925	34%	39.64″
Dec 4	0.13″	2.76″	1993	36%	39.77″
Dec 5	0.14″	2.91″	1937	44%	39.91″
Dec 6	0.15″	1.60″	2011	36%	40.07″
Dec 7	0.16″	1.33″	1969	28%	40.23″
Dec 8	0.15″	2.90″	2014	42%	40.38″
Dec 9	0.15″	2.58″	1878	37%	40.53″
Dec 10	0.16″	1.81″	1936	37%	40.69″
Dec 11	0.16″	2.76″	2024	37%	40.85″
Dec 12	0.16″	4.21″	1992	48%	41.01″
Dec 13	0.15″	1.99″	2002	42%	41.17″
Dec 14	0.15″	1.51″	1981	35%	41.32″
Dec 15	0.16″	1.28″	2022	32%	41.48″
Dec 16	0.15″	2.82″	1970	36%	41.62″
Dec 17	0.15″	2.67″	2000	36%	41.78″
Dec 18	0.15″	1.35″	1986	29%	41.93″
Dec 19	0.15″	1.11″	2002	30%	42.07″
Dec 20	0.13″	1.91″	1946	34%	42.20″
Dec 21	0.13″	1.31″	1969	35%	42.33″
Dec 22	0.13″	1.22″	1947	37%	42.46″
Dec 23	0.13″	1.33″	1994	40%	42.59″
Dec 24	0.13″	0.89″	1912	36%	42.71″
Dec 25	0.12″	3.51″	1969	42%	42.83″
Dec 26	0.12″	2.32″	1894	32%	42.95″
Dec 27	0.12″	1.71″	1964	36%	43.06″
Dec 28	0.13″	1.33″	1968	37%	43.19″
Dec 29	0.13″	2.08″	1901	34%	43.32″
Dec 30	0.12″	1.68″	1906	37%	43.43″
Dec 31	0.12″	0.71″	1972	37%	43.55″

Records & forecast → Boston station Every Day of the Year → national almanac

Data: NOAA/NWS ThreadEx (RCC-ACIS) · normals 1991–2020 (or full record) · part of Weather Trader