Dayton, OH

39.906°N, 84.219°W · station DAYthr · 1893–2026 · 134 years · normal 41.4 in/yr

The Accumulation Ribbon

Every day of the year at Dayton: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (1990) and driest (1934) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 41.4 in

All-Time Extremes

Wettest day ever

4.16in

Jan 21, 1959

Wettest month ever

12.41in

Jan 1937

Wettest year

59.8in

1990 · mean 38.2 in

Driest year

23.7in

1934 · mean 38.2 in

Longest dry streak

40 days

< 0.01 in · ended 1908-09-27

Longest wet streak

14 days

≥ 0.01 in · ended 1903-06-10

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	4.16″ Jan 21, 1959	2.39″	12.41″ 1937
Feb	2.58″ Feb 20, 1951	2.07″	6.77″ 1909
Mar	3.28″ Mar 5, 1897	3.17″	8.89″ 1913
Apr	3.10″ Apr 2, 1977	3.57″	9.20″ 1996
May	3.17″ May 23, 1989	3.66″	10.31″ 2026
Jun	3.76″ Jun 5, 1981	3.62″	10.89″ 1958
Jul	3.24″ Jul 21, 1931	3.56″	8.55″ 1990
Aug	3.38″ Aug 5, 1995	2.88″	8.03″ 1974
Sep	3.81″ Sep 16, 2005	2.69″	10.84″ 2011
Oct	3.82″ Oct 5, 1910	2.29″	7.08″ 1919
Nov	3.57″ Nov 5, 2017	2.56″	8.40″ 1897
Dec	2.85″ Dec 30, 1990	2.81″	10.04″ 1990

Record Daily Rainfall

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

Year by Year

Wettest years

1990	59.75 in
2011	56.72 in
1996	54.65 in
1993	52.23 in
1995	51.26 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	0.11″	1.65″	1948	39%	0.11″
Jan 2	0.12″	0.97″	1996	39%	0.23″
Jan 3	0.11″	2.39″	2000	40%	0.34″
Jan 4	0.12″	2.50″	2004	35%	0.46″
Jan 5	0.12″	2.58″	2005	36%	0.59″
Jan 6	0.13″	1.86″	1895	44%	0.72″
Jan 7	0.13″	1.67″	1998	36%	0.84″
Jan 8	0.12″	1.37″	2008	33%	0.97″
Jan 9	0.12″	1.63″	2024	39%	1.09″
Jan 10	0.12″	1.53″	1924	37%	1.21″
Jan 11	0.11″	2.08″	2005	44%	1.32″
Jan 12	0.10″	1.06″	1916	45%	1.42″
Jan 13	0.09″	1.14″	1910	45%	1.52″
Jan 14	0.09″	2.42″	1937	45%	1.61″
Jan 15	0.09″	1.23″	1950	38%	1.70″
Jan 16	0.09″	0.69″	1924	41%	1.80″
Jan 17	0.10″	1.17″	1932	45%	1.90″
Jan 18	0.10″	1.12″	1929	42%	1.99″
Jan 19	0.09″	1.28″	1900	45%	2.08″
Jan 20	0.09″	1.44″	1935	43%	2.17″
Jan 21	0.08″	4.16″	1959	39%	2.25″
Jan 22	0.08″	1.01″	1937	46%	2.33″
Jan 23	0.08″	0.94″	1996	42%	2.41″
Jan 24	0.08″	1.72″	1937	43%	2.49″
Jan 25	0.08″	1.00″	2026	41%	2.57″
Jan 26	0.08″	3.38″	1952	44%	2.64″
Jan 27	0.08″	0.95″	1994	35%	2.72″
Jan 28	0.08″	0.61″	1916	33%	2.79″
Jan 29	0.08″	1.37″	1969	48%	2.87″
Jan 30	0.08″	1.23″	1982	44%	2.95″
Jan 31	0.08″	1.76″	1982	39%	3.04″
Feb 1	0.08″	1.68″	1988	37%	3.12″
Feb 2	0.08″	1.15″	2022	37%	3.20″
Feb 3	0.08″	0.76″	1901	38%	3.27″
Feb 4	0.07″	1.23″	1990	44%	3.35″
Feb 5	0.08″	1.43″	1908	37%	3.43″
Feb 6	0.08″	1.22″	2019	42%	3.51″
Feb 7	0.08″	1.91″	2019	38%	3.59″
Feb 8	0.08″	0.83″	1994	40%	3.67″
Feb 9	0.08″	0.62″	1959	39%	3.75″
Feb 10	0.08″	2.17″	1959	32%	3.82″
Feb 11	0.08″	0.92″	1898	38%	3.91″
Feb 12	0.08″	1.15″	1894	37%	3.98″
Feb 13	0.08″	1.98″	1948	39%	4.06″
Feb 14	0.08″	2.27″	1908	47%	4.14″
Feb 15	0.07″	1.45″	1990	36%	4.21″
Feb 16	0.07″	1.25″	1910	40%	4.27″
Feb 17	0.08″	1.45″	2022	36%	4.35″
Feb 18	0.08″	0.80″	1914	38%	4.44″
Feb 19	0.08″	1.07″	1938	37%	4.52″
Feb 20	0.08″	2.58″	1951	37%	4.60″
Feb 21	0.08″	1.39″	1945	40%	4.68″
Feb 22	0.09″	1.40″	2022	41%	4.77″
Feb 23	0.09″	2.04″	1975	35%	4.86″
Feb 24	0.09″	1.84″	2018	38%	4.95″
Feb 25	0.09″	1.86″	1961	47%	5.04″
Feb 26	0.10″	1.28″	1957	38%	5.14″
Feb 27	0.10″	1.36″	1999	33%	5.24″
Feb 28	0.10″	0.81″	1939	42%	5.34″
Feb 29	0.10″	1.04″	1997	37%	5.44″
Mar 1	0.11″	1.01″	1945	33%	5.55″
Mar 2	0.11″	2.70″	2023	35%	5.66″
Mar 3	0.10″	2.61″	1963	43%	5.76″
Mar 4	0.10″	3.28″	1897	47%	5.87″
Mar 5	0.11″	1.10″	1921	43%	5.98″
Mar 6	0.11″	2.48″	2022	40%	6.08″
Mar 7	0.11″	1.20″	1956	37%	6.20″
Mar 8	0.10″	1.23″	1909	36%	6.30″
Mar 9	0.10″	2.23″	1964	38%	6.40″
Mar 10	0.10″	1.56″	1952	43%	6.51″
Mar 11	0.11″	1.43″	1986	40%	6.61″
Mar 12	0.11″	3.10″	1907	48%	6.73″
Mar 13	0.11″	1.84″	1922	35%	6.84″
Mar 14	0.11″	1.52″	1919	42%	6.95″
Mar 15	0.12″	1.37″	1943	42%	7.07″
Mar 16	0.11″	0.93″	1920	39%	7.18″
Mar 17	0.12″	1.59″	1933	44%	7.29″
Mar 18	0.11″	2.63″	1943	45%	7.41″
Mar 19	0.11″	2.44″	2017	46%	7.52″
Mar 20	0.11″	0.96″	1961	43%	7.62″
Mar 21	0.11″	1.72″	1991	35%	7.74″
Mar 22	0.11″	1.86″	2007	34%	7.85″
Mar 23	0.12″	2.95″	1913	36%	7.97″
Mar 24	0.12″	2.27″	1913	44%	8.08″
Mar 25	0.12″	1.70″	1904	41%	8.20″
Mar 26	0.12″	1.90″	1913	46%	8.33″
Mar 27	0.12″	0.91″	1921	36%	8.45″
Mar 28	0.12″	1.50″	1924	41%	8.57″
Mar 29	0.12″	1.41″	1938	42%	8.68″
Mar 30	0.11″	0.90″	1904	45%	8.79″
Mar 31	0.12″	1.38″	2016	52%	8.91″
Apr 1	0.13″	3.10″	1977	41%	9.04″
Apr 2	0.13″	2.88″	2018	47%	9.17″
Apr 3	0.14″	1.66″	1980	44%	9.31″
Apr 4	0.14″	1.65″	2025	45%	9.45″
Apr 5	0.14″	1.58″	1938	41%	9.59″
Apr 6	0.14″	2.22″	1909	42%	9.73″
Apr 7	0.15″	2.23″	2000	44%	9.88″
Apr 8	0.15″	1.88″	1929	49%	10.03″
Apr 9	0.15″	1.45″	1994	40%	10.18″
Apr 10	0.14″	1.22″	2013	44%	10.31″
Apr 11	0.14″	1.23″	2002	37%	10.46″
Apr 12	0.15″	1.15″	2022	38%	10.61″
Apr 13	0.16″	2.16″	1922	44%	10.77″
Apr 14	0.17″	1.87″	1939	38%	10.94″
Apr 15	0.16″	1.96″	1998	39%	11.10″
Apr 16	0.15″	1.54″	1992	38%	11.25″
Apr 17	0.15″	1.17″	1912	37%	11.40″
Apr 18	0.15″	1.86″	2011	41%	11.55″
Apr 19	0.15″	1.59″	1947	42%	11.69″
Apr 20	0.15″	1.90″	1995	45%	11.84″
Apr 21	0.15″	2.11″	1928	48%	11.99″
Apr 22	0.15″	1.23″	1950	38%	12.14″
Apr 23	0.15″	1.93″	1996	41%	12.30″
Apr 24	0.16″	1.96″	1993	38%	12.46″
Apr 25	0.17″	1.45″	1989	35%	12.63″
Apr 26	0.16″	1.60″	1959	41%	12.79″
Apr 27	0.16″	1.51″	2017	42%	12.95″
Apr 28	0.15″	1.22″	2017	36%	13.09″
Apr 29	0.15″	2.53″	1996	42%	13.24″
Apr 30	0.15″	1.86″	1985	45%	13.39″
May 1	0.15″	2.61″	1935	41%	13.54″
May 2	0.15″	1.38″	1958	38%	13.69″
May 3	0.15″	2.23″	1990	38%	13.84″
May 4	0.16″	1.26″	1996	41%	13.99″
May 5	0.15″	1.16″	2025	41%	14.15″
May 6	0.15″	1.36″	1998	37%	14.30″
May 7	0.15″	1.27″	1908	38%	14.45″
May 8	0.14″	1.41″	1933	40%	14.59″
May 9	0.14″	1.68″	1909	43%	14.73″
May 10	0.15″	1.90″	1933	45%	14.87″
May 11	0.15″	2.66″	1918	45%	15.03″
May 12	0.15″	1.46″	1933	40%	15.18″
May 13	0.16″	1.17″	1913	39%	15.34″
May 14	0.15″	1.91″	2007	41%	15.49″
May 15	0.15″	1.16″	1909	42%	15.64″
May 16	0.15″	2.20″	1974	44%	15.79″
May 17	0.15″	1.88″	1995	44%	15.94″
May 18	0.15″	1.75″	2004	48%	16.09″
May 19	0.14″	1.68″	2020	41%	16.24″
May 20	0.15″	1.75″	1984	37%	16.38″
May 21	0.14″	1.68″	1903	40%	16.52″
May 22	0.14″	3.17″	1989	34%	16.66″
May 23	0.15″	2.82″	1968	45%	16.81″
May 24	0.14″	1.56″	1939	45%	16.95″
May 25	0.14″	1.78″	1989	48%	17.09″
May 26	0.13″	1.51″	1963	48%	17.22″
May 27	0.13″	2.27″	2004	41%	17.35″
May 28	0.13″	1.20″	1915	38%	17.48″
May 29	0.13″	1.98″	1905	30%	17.61″
May 30	0.13″	1.75″	1997	37%	17.74″
May 31	0.13″	2.58″	1947	39%	17.87″
Jun 1	0.13″	1.31″	1987	42%	18.01″
Jun 2	0.13″	2.01″	1980	40%	18.13″
Jun 3	0.14″	1.44″	2008	28%	18.27″
Jun 4	0.14″	3.76″	1981	39%	18.41″
Jun 5	0.14″	2.55″	1924	39%	18.56″
Jun 6	0.15″	1.88″	1948	33%	18.71″
Jun 7	0.15″	1.70″	1961	39%	18.86″
Jun 8	0.15″	3.11″	1958	33%	19.00″
Jun 9	0.15″	2.24″	1903	37%	19.15″
Jun 10	0.15″	2.09″	1998	46%	19.30″
Jun 11	0.15″	2.35″	2004	31%	19.45″
Jun 12	0.14″	3.25″	1958	41%	19.59″
Jun 13	0.14″	2.68″	2017	43%	19.73″
Jun 14	0.15″	1.52″	2019	40%	19.87″
Jun 15	0.15″	1.25″	1968	38%	20.02″
Jun 16	0.14″	2.10″	1983	35%	20.16″
Jun 17	0.14″	1.82″	1978	36%	20.31″
Jun 18	0.14″	1.69″	1992	39%	20.44″
Jun 19	0.14″	1.85″	1895	34%	20.58″
Jun 20	0.13″	1.62″	1942	40%	20.71″
Jun 21	0.13″	2.25″	1969	41%	20.85″
Jun 22	0.13″	2.86″	2017	34%	20.97″
Jun 23	0.13″	1.04″	1896	36%	21.11″
Jun 24	0.13″	1.98″	1938	43%	21.23″
Jun 25	0.13″	1.85″	1994	38%	21.37″
Jun 26	0.14″	1.81″	1952	35%	21.50″
Jun 27	0.14″	3.23″	1932	39%	21.64″
Jun 28	0.14″	2.94″	1980	30%	21.78″
Jun 29	0.14″	2.02″	1983	29%	21.91″
Jun 30	0.14″	2.40″	1987	35%	22.05″
Jul 1	0.14″	1.49″	1978	29%	22.20″
Jul 2	0.14″	1.47″	1975	29%	22.33″
Jul 3	0.14″	2.05″	1906	43%	22.47″
Jul 4	0.13″	1.36″	1932	31%	22.60″
Jul 5	0.14″	2.22″	2017	33%	22.73″
Jul 6	0.13″	2.13″	1915	32%	22.86″
Jul 7	0.13″	1.43″	1946	37%	22.99″
Jul 8	0.12″	3.16″	1955	29%	23.11″
Jul 9	0.12″	1.18″	1896	34%	23.23″
Jul 10	0.12″	2.82″	1990	33%	23.35″
Jul 11	0.11″	2.16″	1990	33%	23.46″
Jul 12	0.12″	1.86″	2008	43%	23.58″
Jul 13	0.12″	2.49″	1960	29%	23.70″
Jul 14	0.13″	1.96″	1995	33%	23.82″
Jul 15	0.13″	1.41″	2021	30%	23.96″
Jul 16	0.12″	2.64″	2022	34%	24.08″
Jul 17	0.13″	1.48″	1948	32%	24.21″
Jul 18	0.13″	1.98″	1955	33%	24.33″
Jul 19	0.14″	2.46″	1969	33%	24.47″
Jul 20	0.13″	3.24″	1931	32%	24.60″
Jul 21	0.13″	1.51″	2009	35%	24.73″
Jul 22	0.12″	1.66″	2020	42%	24.85″
Jul 23	0.13″	1.52″	1971	27%	24.98″
Jul 24	0.12″	2.19″	1896	34%	25.10″
Jul 25	0.12″	1.56″	1908	30%	25.23″
Jul 26	0.12″	1.45″	1992	35%	25.35″
Jul 27	0.12″	1.30″	1979	34%	25.47″
Jul 28	0.12″	1.66″	1896	38%	25.59″
Jul 29	0.12″	1.17″	1967	26%	25.71″
Jul 30	0.11″	1.38″	1996	26%	25.82″
Jul 31	0.12″	2.19″	1953	28%	25.93″
Aug 1	0.11″	1.27″	2003	34%	26.04″
Aug 2	0.11″	2.13″	1978	33%	26.15″
Aug 3	0.10″	2.86″	1959	28%	26.26″
Aug 4	0.10″	3.38″	1995	28%	26.36″
Aug 5	0.10″	1.36″	2008	33%	26.45″
Aug 6	0.10″	2.89″	1937	36%	26.55″
Aug 7	0.09″	2.23″	1995	34%	26.64″
Aug 8	0.09″	2.98″	1969	32%	26.73″
Aug 9	0.10″	1.88″	1961	33%	26.83″
Aug 10	0.10″	1.86″	1915	39%	26.93″
Aug 11	0.09″	1.21″	2025	29%	27.02″
Aug 12	0.09″	1.52″	1944	25%	27.11″
Aug 13	0.09″	1.06″	1947	29%	27.20″
Aug 14	0.09″	3.29″	1905	32%	27.29″
Aug 15	0.08″	1.35″	1900	28%	27.37″
Aug 16	0.08″	1.95″	1926	29%	27.45″
Aug 17	0.08″	1.36″	1941	27%	27.52″
Aug 18	0.07″	0.74″	1948	33%	27.60″
Aug 19	0.08″	2.01″	2007	36%	27.68″
Aug 20	0.09″	2.69″	2004	26%	27.77″
Aug 21	0.10″	2.15″	1917	26%	27.87″
Aug 22	0.10″	0.90″	1972	28%	27.97″
Aug 23	0.10″	1.53″	1982	24%	28.08″
Aug 24	0.10″	1.51″	1993	28%	28.18″
Aug 25	0.10″	1.25″	1986	24%	28.28″
Aug 26	0.11″	2.37″	1974	28%	28.39″
Aug 27	0.11″	1.90″	1950	28%	28.50″
Aug 28	0.10″	2.47″	1912	26%	28.60″
Aug 29	0.10″	2.29″	2005	27%	28.70″
Aug 30	0.10″	1.29″	1930	26%	28.80″
Aug 31	0.12″	2.07″	1961	23%	28.92″
Sep 1	0.13″	1.48″	1993	31%	29.05″
Sep 2	0.13″	2.30″	1991	24%	29.18″
Sep 3	0.12″	2.27″	2011	34%	29.30″
Sep 4	0.12″	1.82″	1915	25%	29.42″
Sep 5	0.11″	3.53″	1916	22%	29.52″
Sep 6	0.10″	1.08″	1927	21%	29.63″
Sep 7	0.10″	2.70″	2018	25%	29.73″
Sep 8	0.11″	2.25″	2001	26%	29.84″
Sep 9	0.10″	1.24″	1938	29%	29.94″
Sep 10	0.10″	2.23″	1907	24%	30.04″
Sep 11	0.10″	2.19″	2006	28%	30.14″
Sep 12	0.10″	2.54″	1925	26%	30.23″
Sep 13	0.10″	2.60″	1981	25%	30.34″
Sep 14	0.11″	1.60″	1965	25%	30.44″
Sep 15	0.10″	3.81″	2005	26%	30.54″
Sep 16	0.09″	2.00″	1996	22%	30.63″
Sep 17	0.09″	1.19″	1925	27%	30.72″
Sep 18	0.10″	0.94″	1966	28%	30.82″
Sep 19	0.11″	1.45″	1923	34%	30.93″
Sep 20	0.12″	2.26″	1950	27%	31.05″
Sep 21	0.12″	1.86″	2012	30%	31.17″
Sep 22	0.12″	2.31″	1955	28%	31.29″
Sep 23	0.11″	1.15″	1945	27%	31.40″
Sep 24	0.11″	2.19″	1993	26%	31.51″
Sep 25	0.11″	3.10″	2011	28%	31.62″
Sep 26	0.11″	3.73″	2002	39%	31.73″
Sep 27	0.12″	2.43″	1996	32%	31.85″
Sep 28	0.13″	1.46″	1896	31%	31.97″
Sep 29	0.12″	1.24″	1906	26%	32.09″
Sep 30	0.12″	3.24″	1986	24%	32.21″
Oct 1	0.12″	1.11″	2009	21%	32.33″
Oct 2	0.11″	1.41″	1937	26%	32.44″
Oct 3	0.10″	2.05″	1893	29%	32.54″
Oct 4	0.09″	3.82″	1910	33%	32.62″
Oct 5	0.08″	2.78″	1910	33%	32.70″
Oct 6	0.08″	2.45″	2025	29%	32.78″
Oct 7	0.08″	1.86″	1950	19%	32.86″
Oct 8	0.09″	1.54″	1990	28%	32.95″
Oct 9	0.09″	1.00″	1909	24%	33.04″
Oct 10	0.08″	0.92″	1919	31%	33.12″
Oct 11	0.09″	1.38″	1970	24%	33.21″
Oct 12	0.08″	1.33″	1983	30%	33.29″
Oct 13	0.08″	1.46″	2003	27%	33.37″
Oct 14	0.08″	1.16″	1914	24%	33.45″
Oct 15	0.08″	0.80″	1926	29%	33.53″
Oct 16	0.08″	1.17″	2006	28%	33.61″
Oct 17	0.09″	1.65″	1937	30%	33.70″
Oct 18	0.09″	1.92″	2011	33%	33.79″
Oct 19	0.10″	1.21″	1985	27%	33.89″
Oct 20	0.11″	1.99″	1929	25%	34.00″
Oct 21	0.10″	1.20″	2007	25%	34.11″
Oct 22	0.11″	1.65″	1909	31%	34.21″
Oct 23	0.11″	1.26″	2001	38%	34.32″
Oct 24	0.12″	1.29″	1939	26%	34.44″
Oct 25	0.12″	1.21″	1940	27%	34.55″
Oct 26	0.11″	1.54″	1919	36%	34.66″
Oct 27	0.10″	1.96″	2015	33%	34.76″
Oct 28	0.10″	1.65″	1984	26%	34.86″
Oct 29	0.10″	1.46″	2020	34%	34.97″
Oct 30	0.10″	1.33″	1941	36%	35.07″
Oct 31	0.09″	2.86″	2018	35%	35.16″
Nov 1	0.09″	1.97″	1897	32%	35.25″
Nov 2	0.09″	2.20″	1928	29%	35.34″
Nov 3	0.09″	0.92″	1974	28%	35.43″
Nov 4	0.09″	3.57″	2017	36%	35.51″
Nov 5	0.09″	2.18″	1948	29%	35.61″
Nov 6	0.09″	1.42″	1925	36%	35.70″
Nov 7	0.09″	1.28″	1897	29%	35.79″
Nov 8	0.09″	1.28″	1895	35%	35.88″
Nov 9	0.09″	2.05″	1985	35%	35.98″
Nov 10	0.10″	1.81″	1988	37%	36.07″
Nov 11	0.10″	1.24″	1925	28%	36.17″
Nov 12	0.09″	1.79″	1992	28%	36.26″
Nov 13	0.09″	1.44″	1993	37%	36.35″
Nov 14	0.09″	1.45″	2005	43%	36.44″
Nov 15	0.10″	2.85″	1955	39%	36.54″
Nov 16	0.10″	2.00″	1993	30%	36.64″
Nov 17	0.10″	2.94″	1938	32%	36.74″
Nov 18	0.10″	1.89″	1981	30%	36.84″
Nov 19	0.10″	2.12″	1906	32%	36.94″
Nov 20	0.10″	1.26″	1982	29%	37.05″
Nov 21	0.10″	1.48″	2011	34%	37.15″
Nov 22	0.11″	1.54″	1920	40%	37.26″
Nov 23	0.11″	1.23″	1900	38%	37.36″
Nov 24	0.11″	1.94″	1979	39%	37.47″
Nov 25	0.11″	1.53″	1996	46%	37.58″
Nov 26	0.11″	1.15″	1994	44%	37.69″
Nov 27	0.12″	1.19″	2005	39%	37.80″
Nov 28	0.12″	0.72″	2016	42%	37.92″
Nov 29	0.11″	2.23″	1927	36%	38.03″
Nov 30	0.11″	1.11″	2018	37%	38.14″
Dec 1	0.11″	1.49″	1991	30%	38.25″
Dec 2	0.11″	1.58″	1990	39%	38.37″
Dec 3	0.10″	1.42″	1993	34%	38.47″
Dec 4	0.10″	1.94″	2011	40%	38.57″
Dec 5	0.10″	0.71″	2014	37%	38.67″
Dec 6	0.10″	0.81″	1950	35%	38.76″
Dec 7	0.09″	0.93″	1978	34%	38.86″
Dec 8	0.09″	1.49″	1924	38%	38.95″
Dec 9	0.09″	0.90″	1952	44%	39.04″
Dec 10	0.09″	1.50″	1899	42%	39.13″
Dec 11	0.10″	1.01″	1964	42%	39.23″
Dec 12	0.09″	1.47″	1923	46%	39.32″
Dec 13	0.10″	1.70″	1901	39%	39.42″
Dec 14	0.10″	1.35″	1975	37%	39.53″
Dec 15	0.11″	0.74″	1994	35%	39.64″
Dec 16	0.11″	1.77″	2001	38%	39.75″
Dec 17	0.11″	1.71″	1990	36%	39.86″
Dec 18	0.11″	1.22″	1995	37%	39.97″
Dec 19	0.11″	1.55″	2008	44%	40.08″
Dec 20	0.11″	2.46″	2013	43%	40.18″
Dec 21	0.11″	1.34″	1981	41%	40.29″
Dec 22	0.10″	2.65″	1941	35%	40.40″
Dec 23	0.11″	1.77″	1945	39%	40.50″
Dec 24	0.10″	1.21″	2008	53%	40.61″
Dec 25	0.10″	1.42″	1895	33%	40.71″
Dec 26	0.10″	1.48″	1982	46%	40.81″
Dec 27	0.11″	1.30″	2015	39%	40.92″
Dec 28	0.11″	1.16″	2019	37%	41.03″
Dec 29	0.12″	2.85″	1990	41%	41.15″
Dec 30	0.11″	2.73″	1932	43%	41.27″
Dec 31	0.11″	0.67″	2024	34%	41.38″

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

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