Portland, ME

43.642°N, 70.304°W · station PWMthr · 1871–2026 · 156 years · normal 48.2 in/yr

The Accumulation Ribbon

Every day of the year at Portland: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (2005) and driest (1941) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 48.2 in

All-Time Extremes

Wettest day ever

11.74in

Oct 21, 1996

Wettest month ever

16.86in

Oct 1996

Wettest year

66.4in

2005 · mean 43.8 in

Driest year

25.3in

1941 · mean 43.8 in

Longest dry streak

28 days

< 0.01 in · ended 1947-10-28

Longest wet streak

14 days

≥ 0.01 in · ended 1969-11-15

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	3.56″ Jan 10, 1977	3.39″	12.29″ 1935
Feb	3.83″ Feb 25, 2010	3.47″	9.25″ 1900
Mar	3.47″ Mar 31, 1951	3.75″	11.24″ 2010
Apr	5.21″ Apr 2, 1973	3.42″	9.90″ 1973
May	4.78″ May 17, 1916	3.22″	12.34″ 2006
Jun	4.35″ Jun 18, 1922	3.10″	10.86″ 1917
Jul	4.25″ Jul 28, 1939	2.92″	10.84″ 1915
Aug	7.75″ Aug 19, 1991	2.75″	15.22″ 1991
Sep	7.49″ Sep 11, 1954	2.90″	10.84″ 2008
Oct	11.74″ Oct 21, 1996	3.34″	16.86″ 1996
Nov	5.03″ Nov 14, 2009	3.79″	13.50″ 1983
Dec	3.50″ Dec 4, 1990	3.98″	9.69″ 1969

Record Daily Rainfall

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

Year by Year

Wettest years

2005	66.40 in
1983	66.33 in
2008	61.24 in
1979	61.15 in
2006	60.85 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″	2.14″	1935	42%	0.12″
Jan 2	0.11″	1.55″	1932	36%	0.23″
Jan 3	0.12″	2.24″	1936	38%	0.34″
Jan 4	0.12″	1.66″	1982	36%	0.46″
Jan 5	0.12″	1.50″	1936	39%	0.58″
Jan 6	0.11″	1.35″	2014	37%	0.69″
Jan 7	0.12″	1.45″	1969	43%	0.80″
Jan 8	0.12″	1.74″	1923	37%	0.92″
Jan 9	0.12″	1.05″	1956	42%	1.03″
Jan 10	0.12″	3.56″	1977	37%	1.15″
Jan 11	0.12″	1.98″	1922	34%	1.27″
Jan 12	0.12″	1.66″	1891	42%	1.39″
Jan 13	0.12″	2.43″	2024	38%	1.52″
Jan 14	0.12″	1.49″	1978	41%	1.64″
Jan 15	0.12″	2.98″	1940	39%	1.75″
Jan 16	0.12″	1.44″	1906	43%	1.87″
Jan 17	0.13″	1.81″	1920	38%	2.00″
Jan 18	0.13″	1.47″	1926	43%	2.13″
Jan 19	0.12″	1.85″	1936	43%	2.25″
Jan 20	0.12″	1.28″	1995	36%	2.38″
Jan 21	0.12″	2.78″	1979	35%	2.50″
Jan 22	0.12″	1.80″	1958	34%	2.62″
Jan 23	0.11″	1.95″	1992	36%	2.73″
Jan 24	0.11″	2.25″	1935	37%	2.84″
Jan 25	0.11″	1.82″	1915	46%	2.95″
Jan 26	0.10″	1.95″	2023	34%	3.06″
Jan 27	0.11″	2.37″	2015	38%	3.16″
Jan 28	0.11″	1.35″	1994	35%	3.27″
Jan 29	0.12″	1.84″	1900	37%	3.39″
Jan 30	0.12″	2.04″	1966	33%	3.50″
Jan 31	0.11″	0.96″	1942	33%	3.62″
Feb 1	0.10″	1.16″	1951	39%	3.72″
Feb 2	0.10″	1.90″	1902	37%	3.83″
Feb 3	0.11″	1.62″	1880	38%	3.93″
Feb 4	0.10″	1.59″	2022	41%	4.03″
Feb 5	0.10″	2.45″	1920	34%	4.13″
Feb 6	0.11″	1.98″	1896	34%	4.24″
Feb 7	0.12″	1.90″	1929	43%	4.36″
Feb 8	0.12″	1.74″	1971	34%	4.48″
Feb 9	0.13″	1.90″	1969	40%	4.61″
Feb 10	0.12″	2.95″	1885	36%	4.73″
Feb 11	0.12″	1.48″	1933	36%	4.85″
Feb 12	0.12″	2.09″	1881	32%	4.98″
Feb 13	0.11″	2.54″	2008	37%	5.09″
Feb 14	0.12″	2.27″	1914	37%	5.21″
Feb 15	0.12″	1.80″	1953	43%	5.32″
Feb 16	0.12″	1.45″	1993	37%	5.44″
Feb 17	0.13″	1.25″	1954	39%	5.56″
Feb 18	0.14″	2.37″	1952	36%	5.70″
Feb 19	0.14″	2.75″	1960	41%	5.84″
Feb 20	0.14″	2.17″	1934	39%	5.98″
Feb 21	0.13″	1.06″	1898	36%	6.11″
Feb 22	0.13″	3.06″	1898	39%	6.24″
Feb 23	0.13″	1.76″	1928	41%	6.37″
Feb 24	0.12″	1.69″	1981	35%	6.49″
Feb 25	0.13″	3.83″	2010	40%	6.62″
Feb 26	0.12″	2.51″	1934	37%	6.74″
Feb 27	0.12″	1.92″	1912	37%	6.86″
Feb 28	0.13″	1.38″	1884	35%	6.99″
Feb 29	0.13″	3.01″	1900	40%	7.13″
Mar 1	0.14″	2.93″	1896	39%	7.26″
Mar 2	0.14″	1.06″	1890	35%	7.41″
Mar 3	0.13″	1.88″	1971	45%	7.54″
Mar 4	0.12″	1.47″	1917	38%	7.66″
Mar 5	0.13″	2.18″	1959	46%	7.79″
Mar 6	0.13″	2.78″	1920	42%	7.92″
Mar 7	0.13″	2.70″	1930	39%	8.05″
Mar 8	0.13″	2.18″	1998	45%	8.18″
Mar 9	0.13″	2.10″	1891	40%	8.31″
Mar 10	0.12″	2.83″	1901	33%	8.43″
Mar 11	0.12″	1.60″	1985	42%	8.55″
Mar 12	0.12″	2.69″	1939	37%	8.68″
Mar 13	0.12″	2.54″	1912	43%	8.80″
Mar 14	0.14″	1.65″	1984	37%	8.94″
Mar 15	0.14″	3.30″	1937	38%	9.07″
Mar 16	0.13″	1.08″	1973	34%	9.20″
Mar 17	0.12″	1.01″	1930	36%	9.32″
Mar 18	0.12″	2.28″	1983	37%	9.45″
Mar 19	0.12″	2.00″	1954	47%	9.56″
Mar 20	0.12″	1.30″	1983	43%	9.69″
Mar 21	0.12″	3.36″	2001	38%	9.81″
Mar 22	0.14″	2.44″	2010	30%	9.94″
Mar 23	0.13″	2.13″	2024	32%	10.08″
Mar 24	0.14″	1.60″	1969	36%	10.22″
Mar 25	0.14″	1.45″	1930	34%	10.36″
Mar 26	0.15″	2.26″	1978	38%	10.52″
Mar 27	0.16″	1.97″	2005	35%	10.68″
Mar 28	0.16″	2.66″	1931	37%	10.84″
Mar 29	0.15″	2.73″	2010	41%	10.99″
Mar 30	0.14″	3.47″	1951	38%	11.13″
Mar 31	0.14″	3.30″	1922	35%	11.27″
Apr 1	0.14″	5.21″	1973	40%	11.41″
Apr 2	0.14″	2.52″	1924	47%	11.55″
Apr 3	0.14″	1.85″	2006	43%	11.70″
Apr 4	0.14″	1.36″	1987	44%	11.84″
Apr 5	0.14″	2.06″	1886	40%	11.98″
Apr 6	0.13″	1.86″	1901	38%	12.10″
Apr 7	0.13″	2.11″	2022	39%	12.23″
Apr 8	0.13″	1.02″	1902	38%	12.37″
Apr 9	0.14″	2.30″	1906	35%	12.51″
Apr 10	0.14″	2.88″	1980	33%	12.65″
Apr 11	0.12″	1.48″	1993	38%	12.77″
Apr 12	0.13″	2.32″	1933	40%	12.90″
Apr 13	0.14″	1.75″	2004	31%	13.03″
Apr 14	0.14″	1.55″	1895	35%	13.17″
Apr 15	0.15″	3.09″	2007	43%	13.33″
Apr 16	0.16″	3.35″	1996	39%	13.49″
Apr 17	0.16″	2.69″	1997	35%	13.65″
Apr 18	0.17″	1.43″	1925	35%	13.82″
Apr 19	0.17″	2.20″	2015	30%	13.98″
Apr 20	0.17″	4.21″	1991	29%	14.15″
Apr 21	0.16″	1.75″	1937	44%	14.31″
Apr 22	0.17″	1.90″	2000	42%	14.48″
Apr 23	0.15″	3.13″	2012	37%	14.63″
Apr 24	0.15″	1.44″	1944	38%	14.79″
Apr 25	0.15″	1.46″	2025	40%	14.94″
Apr 26	0.16″	3.59″	1979	42%	15.09″
Apr 27	0.16″	1.37″	1958	37%	15.25″
Apr 28	0.15″	1.78″	1920	43%	15.40″
Apr 29	0.15″	2.50″	2023	35%	15.55″
Apr 30	0.14″	0.99″	1953	38%	15.69″
May 1	0.13″	3.41″	2006	38%	15.83″
May 2	0.13″	1.71″	1971	41%	15.96″
May 3	0.13″	2.08″	1893	37%	16.09″
May 4	0.12″	3.49″	1922	47%	16.21″
May 5	0.13″	2.23″	1991	40%	16.34″
May 6	0.13″	2.43″	1937	35%	16.47″
May 7	0.13″	1.48″	1994	29%	16.59″
May 8	0.13″	1.80″	1954	42%	16.73″
May 9	0.13″	2.32″	2025	38%	16.86″
May 10	0.12″	3.32″	1989	40%	16.98″
May 11	0.13″	1.70″	1989	40%	17.11″
May 12	0.12″	2.77″	2006	41%	17.23″
May 13	0.11″	1.98″	2026	38%	17.35″
May 14	0.11″	1.78″	1938	42%	17.46″
May 15	0.11″	1.52″	1978	40%	17.57″
May 16	0.11″	1.90″	1970	37%	17.68″
May 17	0.12″	4.78″	1916	42%	17.80″
May 18	0.12″	1.50″	1901	41%	17.93″
May 19	0.12″	2.16″	2023	37%	18.05″
May 20	0.11″	2.31″	1928	39%	18.16″
May 21	0.11″	1.36″	1939	38%	18.27″
May 22	0.11″	1.79″	1920	34%	18.38″
May 23	0.10″	1.50″	1999	39%	18.48″
May 24	0.11″	2.74″	1894	38%	18.59″
May 25	0.11″	1.74″	1943	42%	18.70″
May 26	0.12″	1.93″	1890	38%	18.82″
May 27	0.13″	1.88″	1906	46%	18.95″
May 28	0.14″	1.70″	1884	44%	19.09″
May 29	0.15″	2.18″	1984	38%	19.23″
May 30	0.15″	1.40″	1908	39%	19.39″
May 31	0.15″	3.16″	1984	37%	19.54″
Jun 1	0.14″	2.65″	2001	37%	19.69″
Jun 2	0.14″	3.63″	2012	37%	19.82″
Jun 3	0.14″	2.37″	2012	44%	19.96″
Jun 4	0.15″	1.07″	1938	43%	20.11″
Jun 5	0.16″	2.43″	2016	42%	20.27″
Jun 6	0.17″	2.39″	1992	52%	20.44″
Jun 7	0.16″	1.06″	1877	42%	20.60″
Jun 8	0.16″	1.69″	1931	33%	20.76″
Jun 9	0.15″	2.50″	1875	37%	20.91″
Jun 10	0.14″	1.48″	2026	37%	21.05″
Jun 11	0.14″	1.67″	2009	38%	21.19″
Jun 12	0.13″	3.58″	1998	40%	21.32″
Jun 13	0.12″	1.72″	1998	37%	21.44″
Jun 14	0.11″	1.52″	1942	39%	21.55″
Jun 15	0.12″	2.01″	1879	41%	21.67″
Jun 16	0.12″	4.14″	1917	39%	21.79″
Jun 17	0.12″	4.35″	1922	37%	21.91″
Jun 18	0.12″	3.21″	2009	30%	22.03″
Jun 19	0.11″	4.03″	1967	33%	22.14″
Jun 20	0.11″	1.71″	1967	35%	22.25″
Jun 21	0.11″	1.76″	1918	39%	22.36″
Jun 22	0.11″	1.82″	2013	39%	22.47″
Jun 23	0.11″	1.77″	1906	33%	22.59″
Jun 24	0.12″	1.21″	1964	39%	22.70″
Jun 25	0.11″	1.59″	1984	40%	22.81″
Jun 26	0.11″	1.50″	1970	38%	22.92″
Jun 27	0.11″	1.58″	2015	38%	23.04″
Jun 28	0.11″	2.61″	1885	42%	23.15″
Jun 29	0.12″	2.51″	2020	33%	23.26″
Jun 30	0.11″	2.38″	1979	38%	23.37″
Jul 1	0.11″	1.80″	2023	33%	23.49″
Jul 2	0.12″	3.22″	1915	34%	23.60″
Jul 3	0.12″	1.41″	2014	32%	23.72″
Jul 4	0.12″	1.36″	1874	35%	23.84″
Jul 5	0.11″	1.49″	1984	39%	23.94″
Jul 6	0.11″	1.57″	2009	24%	24.06″
Jul 7	0.12″	3.66″	1915	36%	24.17″
Jul 8	0.11″	2.33″	2021	34%	24.28″
Jul 9	0.11″	2.56″	1884	34%	24.40″
Jul 10	0.12″	1.03″	1959	31%	24.51″
Jul 11	0.12″	2.16″	1874	40%	24.63″
Jul 12	0.12″	1.33″	1953	29%	24.75″
Jul 13	0.12″	3.37″	1996	42%	24.87″
Jul 14	0.12″	1.34″	2007	33%	24.99″
Jul 15	0.12″	0.98″	1883	28%	25.11″
Jul 16	0.12″	2.53″	1979	35%	25.23″
Jul 17	0.12″	1.80″	1924	36%	25.35″
Jul 18	0.12″	1.87″	1951	30%	25.47″
Jul 19	0.12″	1.39″	1889	35%	25.59″
Jul 20	0.13″	1.26″	2006	38%	25.71″
Jul 21	0.12″	2.08″	1947	36%	25.83″
Jul 22	0.11″	1.06″	1908	38%	25.94″
Jul 23	0.11″	2.10″	2009	33%	26.05″
Jul 24	0.11″	1.77″	2008	37%	26.16″
Jul 25	0.11″	2.41″	1881	33%	26.27″
Jul 26	0.10″	1.88″	1930	35%	26.37″
Jul 27	0.11″	4.25″	1939	46%	26.48″
Jul 28	0.11″	2.49″	2011	41%	26.59″
Jul 29	0.11″	1.52″	1905	41%	26.70″
Jul 30	0.10″	1.77″	1985	30%	26.80″
Jul 31	0.10″	1.80″	1976	36%	26.90″
Aug 1	0.10″	4.14″	1946	32%	27.00″
Aug 2	0.10″	2.25″	1894	28%	27.10″
Aug 3	0.10″	2.81″	2008	35%	27.20″
Aug 4	0.09″	1.87″	1953	34%	27.30″
Aug 5	0.11″	2.29″	2007	27%	27.40″
Aug 6	0.11″	2.36″	1877	37%	27.51″
Aug 7	0.12″	1.74″	1874	42%	27.63″
Aug 8	0.11″	2.25″	1877	37%	27.74″
Aug 9	0.12″	3.24″	1991	33%	27.86″
Aug 10	0.12″	2.50″	2012	38%	27.98″
Aug 11	0.13″	2.14″	1931	32%	28.11″
Aug 12	0.13″	6.43″	2014	38%	28.24″
Aug 13	0.14″	2.38″	2004	31%	28.38″
Aug 14	0.14″	2.32″	1920	28%	28.52″
Aug 15	0.15″	2.08″	1900	38%	28.67″
Aug 16	0.14″	2.40″	1917	32%	28.81″
Aug 17	0.14″	2.15″	1887	37%	28.96″
Aug 18	0.14″	7.75″	1991	32%	29.09″
Aug 19	0.14″	1.36″	1939	31%	29.23″
Aug 20	0.12″	1.91″	2019	27%	29.35″
Aug 21	0.12″	2.19″	2022	37%	29.47″
Aug 22	0.12″	2.97″	2009	29%	29.59″
Aug 23	0.12″	2.17″	1887	39%	29.71″
Aug 24	0.12″	2.64″	2010	28%	29.82″
Aug 25	0.11″	1.60″	1871	25%	29.93″
Aug 26	0.10″	1.76″	1871	28%	30.02″
Aug 27	0.10″	1.70″	1892	28%	30.13″
Aug 28	0.09″	1.68″	2009	31%	30.22″
Aug 29	0.09″	2.15″	1871	29%	30.31″
Aug 30	0.09″	2.26″	1954	29%	30.40″
Aug 31	0.09″	3.04″	1949	32%	30.49″
Sep 1	0.09″	2.26″	2013	26%	30.58″
Sep 2	0.10″	2.33″	1905	32%	30.68″
Sep 3	0.11″	2.90″	1972	33%	30.79″
Sep 4	0.11″	1.27″	1994	27%	30.90″
Sep 5	0.10″	0.93″	2022	32%	31.00″
Sep 6	0.10″	5.28″	1896	30%	31.10″
Sep 7	0.11″	1.73″	2008	26%	31.21″
Sep 8	0.12″	3.12″	1969	32%	31.33″
Sep 9	0.12″	3.00″	1999	34%	31.45″
Sep 10	0.11″	7.49″	1954	30%	31.57″
Sep 11	0.12″	1.59″	2013	30%	31.68″
Sep 12	0.12″	2.44″	1960	34%	31.80″
Sep 13	0.12″	2.82″	1920	32%	31.92″
Sep 14	0.11″	1.79″	1944	39%	32.03″
Sep 15	0.12″	4.44″	1999	39%	32.14″
Sep 16	0.12″	3.96″	1932	38%	32.26″
Sep 17	0.12″	2.29″	2023	32%	32.38″
Sep 18	0.12″	1.65″	2004	35%	32.50″
Sep 19	0.13″	2.04″	1987	35%	32.62″
Sep 20	0.13″	1.27″	1974	35%	32.75″
Sep 21	0.14″	1.21″	1983	35%	32.89″
Sep 22	0.14″	4.04″	1994	28%	33.03″
Sep 23	0.13″	2.66″	1882	30%	33.16″
Sep 24	0.14″	2.42″	1961	25%	33.29″
Sep 25	0.14″	1.56″	1977	32%	33.43″
Sep 26	0.14″	2.21″	2008	39%	33.57″
Sep 27	0.13″	1.50″	1909	30%	33.70″
Sep 28	0.14″	2.21″	1907	34%	33.84″
Sep 29	0.14″	5.56″	2015	32%	33.98″
Sep 30	0.14″	2.14″	1920	32%	34.11″
Oct 1	0.14″	1.86″	1929	30%	34.26″
Oct 2	0.15″	1.90″	2009	32%	34.41″
Oct 3	0.15″	1.11″	1952	31%	34.56″
Oct 4	0.15″	1.73″	1985	30%	34.71″
Oct 5	0.15″	7.49″	1962	34%	34.86″
Oct 6	0.15″	3.93″	1873	32%	35.01″
Oct 7	0.16″	4.43″	2005	34%	35.16″
Oct 8	0.16″	2.63″	1998	30%	35.32″
Oct 9	0.16″	5.61″	1998	32%	35.49″
Oct 10	0.16″	2.68″	1871	29%	35.65″
Oct 11	0.16″	3.91″	2007	32%	35.81″
Oct 12	0.17″	1.69″	1990	27%	35.97″
Oct 13	0.17″	2.79″	2022	32%	36.14″
Oct 14	0.20″	3.51″	2010	32%	36.35″
Oct 15	0.21″	2.00″	2002	26%	36.56″
Oct 16	0.20″	2.32″	1890	33%	36.76″
Oct 17	0.19″	1.49″	2022	31%	36.95″
Oct 18	0.19″	1.06″	1914	32%	37.15″
Oct 19	0.19″	1.67″	2006	36%	37.34″
Oct 20	0.20″	2.78″	1996	29%	37.54″
Oct 21	0.21″	11.74″	1996	27%	37.74″
Oct 22	0.19″	2.18″	1988	35%	37.93″
Oct 23	0.18″	2.66″	1893	39%	38.12″
Oct 24	0.18″	1.87″	1925	36%	38.30″
Oct 25	0.19″	1.76″	2017	30%	38.49″
Oct 26	0.19″	1.96″	1943	41%	38.68″
Oct 27	0.19″	2.27″	2006	34%	38.87″
Oct 28	0.18″	2.44″	1886	35%	39.04″
Oct 29	0.15″	2.78″	2021	37%	39.20″
Oct 30	0.14″	3.05″	1955	34%	39.34″
Oct 31	0.14″	2.51″	1880	32%	39.48″
Nov 1	0.14″	2.06″	1988	34%	39.62″
Nov 2	0.14″	3.16″	1951	37%	39.76″
Nov 3	0.13″	2.70″	1983	30%	39.88″
Nov 4	0.12″	2.72″	1985	31%	40.01″
Nov 5	0.11″	1.90″	1990	39%	40.12″
Nov 6	0.12″	2.66″	1963	29%	40.25″
Nov 7	0.13″	1.82″	1963	31%	40.38″
Nov 8	0.14″	1.53″	1977	38%	40.51″
Nov 9	0.14″	4.70″	1990	37%	40.65″
Nov 10	0.14″	2.55″	1932	36%	40.79″
Nov 11	0.13″	2.57″	1947	41%	40.92″
Nov 12	0.14″	1.58″	1937	38%	41.06″
Nov 13	0.13″	5.03″	2009	36%	41.18″
Nov 14	0.13″	1.95″	1871	38%	41.32″
Nov 15	0.13″	2.66″	1983	40%	41.45″
Nov 16	0.14″	1.57″	2002	36%	41.59″
Nov 17	0.14″	2.61″	1929	35%	41.73″
Nov 18	0.14″	2.70″	1926	31%	41.87″
Nov 19	0.16″	1.92″	1889	39%	42.03″
Nov 20	0.17″	2.53″	1972	37%	42.20″
Nov 21	0.15″	2.35″	2005	37%	42.35″
Nov 22	0.15″	2.08″	1874	39%	42.50″
Nov 23	0.14″	2.32″	2020	39%	42.64″
Nov 24	0.14″	2.51″	1983	39%	42.78″
Nov 25	0.15″	3.16″	1877	43%	42.93″
Nov 26	0.15″	2.48″	2013	46%	43.08″
Nov 27	0.14″	3.33″	1889	44%	43.23″
Nov 28	0.15″	1.98″	1963	38%	43.38″
Nov 29	0.15″	1.97″	1987	35%	43.53″
Nov 30	0.15″	2.69″	1944	37%	43.68″
Dec 1	0.15″	1.88″	1942	36%	43.83″
Dec 2	0.15″	2.00″	1967	37%	43.99″
Dec 3	0.15″	3.50″	1990	35%	44.14″
Dec 4	0.13″	2.18″	1968	38%	44.27″
Dec 5	0.13″	3.13″	1962	48%	44.40″
Dec 6	0.14″	1.70″	1937	40%	44.54″
Dec 7	0.14″	1.71″	1884	28%	44.69″
Dec 8	0.14″	1.95″	2014	41%	44.83″
Dec 9	0.14″	2.58″	1878	42%	44.97″
Dec 10	0.14″	2.17″	1936	39%	45.11″
Dec 11	0.15″	2.33″	2024	38%	45.27″
Dec 12	0.15″	2.97″	1983	48%	45.42″
Dec 13	0.15″	3.40″	2019	44%	45.58″
Dec 14	0.16″	1.47″	1954	32%	45.73″
Dec 15	0.16″	2.30″	1884	29%	45.89″
Dec 16	0.15″	2.88″	1973	38%	46.05″
Dec 17	0.16″	2.22″	2000	40%	46.21″
Dec 18	0.16″	3.50″	2012	29%	46.36″
Dec 19	0.16″	1.79″	1939	33%	46.52″
Dec 20	0.15″	2.05″	1946	36%	46.67″
Dec 21	0.15″	1.46″	1902	38%	46.82″
Dec 22	0.15″	2.14″	1911	44%	46.97″
Dec 23	0.15″	2.99″	1994	43%	47.12″
Dec 24	0.15″	1.87″	1986	42%	47.27″
Dec 25	0.14″	2.74″	1975	40%	47.41″
Dec 26	0.13″	1.68″	1969	30%	47.55″
Dec 27	0.14″	2.06″	1922	42%	47.68″
Dec 28	0.13″	1.80″	2025	46%	47.81″
Dec 29	0.13″	2.07″	1942	33%	47.94″
Dec 30	0.12″	1.46″	1906	41%	48.06″
Dec 31	0.11″	1.49″	1972	47%	48.18″

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

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