Chicago, IL

41.960°N, 87.932°W · station ORDthr · 1871–2026 · 156 years · normal 37.9 in/yr

The Accumulation Ribbon

Every day of the year at Chicago: how the rain adds up. The filled curve is the normal running total; the dashed lines are the wettest (2008) and driest (1962) years on record; the white line is 2026 so far.

Normal to date Wettest / driest year 2026 so far normal annual 37.9 in

All-Time Extremes

Driest year

22.2in

1962 · mean 34.7 in

Longest dry streak

30 days

< 0.01 in · ended 1919-02-05

Wettest day ever

6.86in

Jul 23, 2011

Wettest year

50.9in

2008 · mean 34.7 in

Longest wet streak

11 days

≥ 0.01 in · ended 1880-09-03

Wettest month ever

17.10in

Aug 1987

Records by Month

Month	Wettest day	Normal	Wettest month
Jan	2.76″ Jan 12, 1960	1.68″	4.84″ 1916
Feb	3.44″ Feb 21, 1997	1.62″	5.56″ 1997
Mar	3.20″ Mar 25, 1884	2.66″	5.58″ 1922
Apr	3.83″ Apr 18, 1975	3.00″	8.68″ 2013
May	3.53″ May 14, 2020	3.44″	9.51″ 2020
Jun	4.64″ Jun 13, 1976	3.43″	10.58″ 1892
Jul	6.86″ Jul 23, 2011	3.18″	11.15″ 2011
Aug	6.49″ Aug 14, 1987	3.29″	17.10″ 1987
Sep	6.64″ Sep 13, 2008	2.66″	14.17″ 1961
Oct	4.19″ Oct 14, 2017	2.32″	12.06″ 1954
Nov	3.34″ Nov 5, 1883	2.11″	8.22″ 1985
Dec	4.47″ Dec 2, 1982	1.93″	8.56″ 1982

Record Daily Rainfall

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

Year by Year

Driest years

1962	22.22 in
1956	22.23 in
1934	22.78 in
1930	23.34 in
2005	24.09 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	0.07″	1.33″	1948	34%	0.07″
Jan 2	0.07″	1.24″	1999	38%	0.14″
Jan 3	0.07″	1.24″	1897	33%	0.21″
Jan 4	0.07″	1.20″	1993	35%	0.28″
Jan 5	0.07″	0.80″	1929	28%	0.36″
Jan 6	0.07″	1.44″	1918	35%	0.43″
Jan 7	0.07″	0.65″	1907	27%	0.50″
Jan 8	0.07″	1.92″	2026	35%	0.57″
Jan 9	0.07″	0.93″	2024	31%	0.64″
Jan 10	0.07″	2.29″	1975	28%	0.71″
Jan 11	0.07″	0.64″	1918	37%	0.78″
Jan 12	0.07″	2.76″	1960	37%	0.85″
Jan 13	0.07″	1.37″	1950	42%	0.92″
Jan 14	0.07″	1.10″	1871	42%	0.99″
Jan 15	0.07″	0.81″	1877	36%	1.06″
Jan 16	0.07″	0.90″	2017	34%	1.13″
Jan 17	0.07″	0.70″	1910	31%	1.21″
Jan 18	0.07″	1.51″	1876	34%	1.27″
Jan 19	0.06″	1.72″	1907	33%	1.33″
Jan 20	0.06″	1.13″	1898	39%	1.39″
Jan 21	0.06″	1.49″	1916	41%	1.45″
Jan 22	0.06″	1.39″	1887	40%	1.51″
Jan 23	0.06″	0.89″	1999	40%	1.57″
Jan 24	0.06″	0.76″	1938	35%	1.63″
Jan 25	0.06″	1.12″	1990	37%	1.69″
Jan 26	0.06″	1.66″	1967	35%	1.75″
Jan 27	0.06″	0.74″	1967	37%	1.81″
Jan 28	0.06″	0.71″	1909	33%	1.86″
Jan 29	0.06″	1.33″	2013	30%	1.92″
Jan 30	0.05″	0.97″	1939	36%	1.97″
Jan 31	0.05″	1.52″	1914	39%	2.02″
Feb 1	0.05″	0.87″	2015	36%	2.08″
Feb 2	0.06″	1.45″	1983	27%	2.13″
Feb 3	0.06″	1.52″	1896	33%	2.19″
Feb 4	0.06″	1.26″	1924	38%	2.24″
Feb 5	0.06″	0.81″	1909	37%	2.30″
Feb 6	0.05″	1.98″	1942	39%	2.35″
Feb 7	0.05″	1.34″	1881	35%	2.40″
Feb 8	0.05″	1.10″	1887	37%	2.45″
Feb 9	0.05″	1.56″	1876	29%	2.50″
Feb 10	0.05″	0.96″	1960	28%	2.55″
Feb 11	0.05″	0.83″	2009	33%	2.60″
Feb 12	0.05″	1.13″	1884	33%	2.66″
Feb 13	0.07″	0.78″	1949	36%	2.72″
Feb 14	0.07″	0.94″	1950	33%	2.80″
Feb 15	0.07″	0.78″	1954	36%	2.86″
Feb 16	0.07″	1.94″	1883	35%	2.93″
Feb 17	0.07″	1.10″	2008	31%	3.01″
Feb 18	0.08″	1.15″	1908	37%	3.09″
Feb 19	0.08″	0.95″	1994	32%	3.17″
Feb 20	0.08″	2.10″	2018	37%	3.25″
Feb 21	0.08″	3.44″	1997	30%	3.33″
Feb 22	0.09″	1.20″	2023	37%	3.42″
Feb 23	0.09″	1.45″	1985	35%	3.52″
Feb 24	0.09″	1.11″	2001	39%	3.61″
Feb 25	0.09″	0.73″	1926	39%	3.70″
Feb 26	0.09″	1.95″	2009	37%	3.79″
Feb 27	0.09″	1.08″	1876	27%	3.87″
Feb 28	0.08″	1.35″	1882	39%	3.95″
Feb 29	0.08″	1.09″	2007	33%	4.03″
Mar 1	0.09″	1.02″	2002	35%	4.12″
Mar 2	0.09″	1.21″	1966	35%	4.21″
Mar 3	0.08″	1.75″	1985	39%	4.29″
Mar 4	0.08″	1.39″	1976	43%	4.38″
Mar 5	0.08″	0.92″	1894	37%	4.45″
Mar 6	0.08″	0.88″	1931	36%	4.53″
Mar 7	0.08″	1.67″	2009	37%	4.61″
Mar 8	0.07″	1.60″	1998	35%	4.68″
Mar 9	0.07″	1.02″	2026	36%	4.75″
Mar 10	0.07″	0.92″	1957	41%	4.82″
Mar 11	0.07″	1.72″	1902	38%	4.88″
Mar 12	0.06″	1.27″	1972	40%	4.95″
Mar 13	0.07″	0.76″	1953	37%	5.01″
Mar 14	0.07″	1.76″	2026	37%	5.08″
Mar 15	0.07″	1.42″	1942	32%	5.15″
Mar 16	0.06″	1.64″	1876	29%	5.21″
Mar 17	0.06″	1.33″	1983	44%	5.26″
Mar 18	0.06″	1.62″	1898	44%	5.32″
Mar 19	0.06″	2.50″	1948	42%	5.39″
Mar 20	0.06″	1.07″	2007	34%	5.45″
Mar 21	0.07″	1.13″	1993	31%	5.52″
Mar 22	0.07″	1.16″	1913	37%	5.59″
Mar 23	0.08″	1.26″	1969	37%	5.68″
Mar 24	0.09″	1.41″	1954	42%	5.76″
Mar 25	0.09″	3.20″	1884	46%	5.85″
Mar 26	0.09″	1.21″	1898	38%	5.94″
Mar 27	0.09″	1.28″	1908	40%	6.03″
Mar 28	0.10″	1.48″	2020	33%	6.13″
Mar 29	0.09″	1.84″	2017	38%	6.22″
Mar 30	0.09″	3.12″	1929	41%	6.31″
Mar 31	0.10″	1.58″	1967	44%	6.41″
Apr 1	0.10″	1.64″	1983	40%	6.51″
Apr 2	0.10″	1.15″	1940	40%	6.61″
Apr 3	0.11″	1.90″	1947	40%	6.72″
Apr 4	0.11″	2.58″	1947	47%	6.83″
Apr 5	0.10″	1.15″	1928	33%	6.93″
Apr 6	0.10″	0.81″	1998	32%	7.04″
Apr 7	0.10″	1.35″	1999	42%	7.14″
Apr 8	0.11″	1.49″	1882	40%	7.25″
Apr 9	0.12″	2.53″	1922	34%	7.37″
Apr 10	0.12″	2.41″	1871	44%	7.49″
Apr 11	0.13″	1.16″	1909	40%	7.62″
Apr 12	0.12″	1.33″	1983	40%	7.74″
Apr 13	0.13″	2.43″	2026	40%	7.87″
Apr 14	0.13″	1.08″	1993	44%	8.01″
Apr 15	0.13″	1.97″	1921	44%	8.14″
Apr 16	0.12″	2.01″	2013	39%	8.26″
Apr 17	0.12″	3.83″	1975	40%	8.38″
Apr 18	0.12″	1.52″	1970	42%	8.51″
Apr 19	0.13″	1.65″	1905	42%	8.63″
Apr 20	0.13″	2.37″	2000	44%	8.76″
Apr 21	0.14″	1.55″	1981	37%	8.90″
Apr 22	0.15″	1.43″	1984	31%	9.04″
Apr 23	0.14″	1.53″	1878	38%	9.19″
Apr 24	0.14″	2.05″	1976	43%	9.33″
Apr 25	0.14″	1.76″	1995	33%	9.47″
Apr 26	0.13″	2.13″	1959	39%	9.60″
Apr 27	0.14″	2.04″	1981	43%	9.74″
Apr 28	0.13″	2.75″	1909	38%	9.87″
Apr 29	0.13″	2.22″	2003	42%	10.00″
Apr 30	0.14″	2.35″	1873	38%	10.14″
May 1	0.14″	1.91″	1940	42%	10.28″
May 2	0.15″	1.59″	1919	38%	10.43″
May 3	0.16″	1.70″	1990	36%	10.59″
May 4	0.16″	1.49″	1933	35%	10.75″
May 5	0.17″	1.66″	1892	34%	10.91″
May 6	0.16″	2.07″	1998	40%	11.07″
May 7	0.15″	1.06″	1932	44%	11.22″
May 8	0.15″	3.14″	1990	41%	11.37″
May 9	0.14″	2.84″	1951	38%	11.51″
May 10	0.15″	3.30″	1966	47%	11.66″
May 11	0.15″	2.67″	1935	35%	11.81″
May 12	0.15″	1.49″	2010	39%	11.96″
May 13	0.16″	1.95″	1945	42%	12.12″
May 14	0.16″	3.53″	2020	40%	12.27″
May 15	0.16″	1.38″	1974	35%	12.43″
May 16	0.15″	1.38″	1969	37%	12.58″
May 17	0.15″	3.11″	2020	41%	12.73″
May 18	0.15″	1.53″	1949	37%	12.88″
May 19	0.14″	2.54″	1975	39%	13.03″
May 20	0.14″	1.96″	2018	38%	13.17″
May 21	0.14″	1.62″	1983	31%	13.31″
May 22	0.14″	1.58″	1984	38%	13.45″
May 23	0.14″	1.62″	1927	34%	13.59″
May 24	0.15″	2.52″	1879	38%	13.74″
May 25	0.14″	1.78″	1913	35%	13.88″
May 26	0.14″	1.92″	2019	38%	14.02″
May 27	0.14″	1.59″	1918	36%	14.17″
May 28	0.14″	3.45″	1981	37%	14.30″
May 29	0.13″	1.24″	2006	31%	14.43″
May 30	0.13″	1.81″	1942	33%	14.56″
May 31	0.13″	1.62″	1947	34%	14.69″
Jun 1	0.12″	2.35″	1950	44%	14.81″
Jun 2	0.12″	2.90″	1885	35%	14.94″
Jun 3	0.13″	2.28″	2002	30%	15.07″
Jun 4	0.13″	0.96″	1901	40%	15.20″
Jun 5	0.13″	1.60″	1931	38%	15.33″
Jun 6	0.13″	1.43″	1881	39%	15.46″
Jun 7	0.13″	2.29″	1916	35%	15.59″
Jun 8	0.13″	1.31″	2018	33%	15.72″
Jun 9	0.13″	2.94″	1967	42%	15.85″
Jun 10	0.15″	3.02″	1926	39%	15.99″
Jun 11	0.15″	1.50″	2021	28%	16.14″
Jun 12	0.15″	2.23″	1926	44%	16.28″
Jun 13	0.15″	4.64″	1976	40%	16.44″
Jun 14	0.15″	2.56″	2015	37%	16.59″
Jun 15	0.17″	1.78″	1967	37%	16.76″
Jun 16	0.16″	1.87″	1876	30%	16.92″
Jun 17	0.15″	1.86″	2025	37%	17.07″
Jun 18	0.15″	3.97″	2009	29%	17.23″
Jun 19	0.16″	1.85″	2021	32%	17.39″
Jun 20	0.15″	2.71″	1928	40%	17.54″
Jun 21	0.15″	1.25″	1974	37%	17.69″
Jun 22	0.15″	2.69″	1994	35%	17.84″
Jun 23	0.14″	3.04″	1892	37%	17.98″
Jun 24	0.13″	4.58″	1959	39%	18.11″
Jun 25	0.13″	1.48″	2013	33%	18.24″
Jun 26	0.12″	1.68″	1983	37%	18.36″
Jun 27	0.12″	1.30″	2017	30%	18.48″
Jun 28	0.11″	2.81″	1933	33%	18.59″
Jun 29	0.11″	2.60″	2014	35%	18.71″
Jun 30	0.10″	1.56″	1901	24%	18.81″
Jul 1	0.10″	3.35″	2023	27%	18.91″
Jul 2	0.10″	2.05″	1960	35%	19.02″
Jul 3	0.10″	1.72″	1995	37%	19.11″
Jul 4	0.09″	1.48″	1930	33%	19.21″
Jul 5	0.09″	3.93″	1943	34%	19.30″
Jul 6	0.10″	2.23″	1879	28%	19.40″
Jul 7	0.09″	2.41″	1951	35%	19.48″
Jul 8	0.09″	2.43″	1946	36%	19.58″
Jul 9	0.10″	1.32″	1982	34%	19.67″
Jul 10	0.11″	1.89″	1876	29%	19.78″
Jul 11	0.11″	6.16″	1957	27%	19.89″
Jul 12	0.12″	1.49″	1963	26%	20.01″
Jul 13	0.13″	1.75″	1913	31%	20.14″
Jul 14	0.14″	1.88″	1899	26%	20.28″
Jul 15	0.15″	2.48″	1950	26%	20.44″
Jul 16	0.16″	3.04″	1969	28%	20.59″
Jul 17	0.16″	2.90″	1993	28%	20.75″
Jul 18	0.16″	1.96″	1963	37%	20.91″
Jul 19	0.15″	3.03″	1978	32%	21.07″
Jul 20	0.15″	1.81″	1924	28%	21.22″
Jul 21	0.15″	2.26″	1982	34%	21.37″
Jul 22	0.15″	6.86″	2011	29%	21.52″
Jul 23	0.15″	3.64″	2010	27%	21.68″
Jul 24	0.16″	1.22″	1993	30%	21.83″
Jul 25	0.14″	4.10″	1878	32%	21.98″
Jul 26	0.14″	4.71″	1966	32%	22.12″
Jul 27	0.14″	2.91″	1906	35%	22.26″
Jul 28	0.14″	1.58″	1989	26%	22.41″
Jul 29	0.13″	2.43″	1979	22%	22.54″
Jul 30	0.13″	1.52″	1988	29%	22.67″
Jul 31	0.12″	2.55″	1961	28%	22.79″
Aug 1	0.12″	5.63″	1885	31%	22.91″
Aug 2	0.12″	2.10″	1915	28%	23.02″
Aug 3	0.12″	3.47″	1989	32%	23.14″
Aug 4	0.12″	2.43″	2008	35%	23.26″
Aug 5	0.13″	2.72″	1924	31%	23.39″
Aug 6	0.13″	2.36″	2018	29%	23.52″
Aug 7	0.13″	2.35″	1977	28%	23.65″
Aug 8	0.13″	1.21″	1988	31%	23.78″
Aug 9	0.13″	1.87″	1979	36%	23.91″
Aug 10	0.13″	3.70″	1923	32%	24.04″
Aug 11	0.12″	2.31″	1908	28%	24.16″
Aug 12	0.12″	2.86″	1987	29%	24.28″
Aug 13	0.12″	6.49″	1987	29%	24.40″
Aug 14	0.12″	1.87″	1993	28%	24.52″
Aug 15	0.13″	2.90″	1987	30%	24.65″
Aug 16	0.13″	3.79″	1968	30%	24.78″
Aug 17	0.14″	2.85″	1990	33%	24.91″
Aug 18	0.14″	2.07″	1921	34%	25.05″
Aug 19	0.14″	1.59″	1924	28%	25.19″
Aug 20	0.14″	2.00″	1874	30%	25.33″
Aug 21	0.14″	4.45″	2002	24%	25.47″
Aug 22	0.15″	2.35″	2007	34%	25.62″
Aug 23	0.14″	2.47″	1895	28%	25.76″
Aug 24	0.14″	1.63″	2001	24%	25.90″
Aug 25	0.14″	2.46″	1987	27%	26.04″
Aug 26	0.13″	1.59″	1923	28%	26.18″
Aug 27	0.12″	1.39″	1977	30%	26.30″
Aug 28	0.13″	2.02″	1955	32%	26.43″
Aug 29	0.12″	4.31″	2001	26%	26.55″
Aug 30	0.11″	1.51″	1876	21%	26.65″
Aug 31	0.11″	2.92″	1977	22%	26.76″
Sep 1	0.10″	1.55″	2010	25%	26.87″
Sep 2	0.11″	1.92″	1961	30%	26.97″
Sep 3	0.10″	2.95″	1894	25%	27.08″
Sep 4	0.10″	2.90″	2008	25%	27.18″
Sep 5	0.10″	1.70″	1920	26%	27.28″
Sep 6	0.11″	1.00″	1981	26%	27.38″
Sep 7	0.11″	1.79″	1980	29%	27.50″
Sep 8	0.11″	3.44″	1875	33%	27.61″
Sep 9	0.11″	2.48″	1922	32%	27.72″
Sep 10	0.12″	1.81″	1901	32%	27.84″
Sep 11	0.12″	2.43″	1961	35%	27.96″
Sep 12	0.12″	2.13″	1961	29%	28.08″
Sep 13	0.12″	6.64″	2008	32%	28.20″
Sep 14	0.12″	2.42″	1896	32%	28.32″
Sep 15	0.12″	1.38″	1936	27%	28.45″
Sep 16	0.12″	2.42″	1927	26%	28.57″
Sep 17	0.12″	2.41″	2015	30%	28.68″
Sep 18	0.11″	1.72″	2001	36%	28.79″
Sep 19	0.12″	1.46″	1924	30%	28.91″
Sep 20	0.12″	1.67″	1947	34%	29.04″
Sep 21	0.10″	1.73″	2006	31%	29.14″
Sep 22	0.10″	2.09″	1961	26%	29.24″
Sep 23	0.10″	1.85″	1977	30%	29.34″
Sep 24	0.12″	1.85″	1961	35%	29.46″
Sep 25	0.11″	2.71″	1933	34%	29.57″
Sep 26	0.11″	2.28″	2019	26%	29.68″
Sep 27	0.11″	1.96″	1999	30%	29.79″
Sep 28	0.12″	3.65″	1972	34%	29.91″
Sep 29	0.11″	1.26″	1919	30%	30.01″
Sep 30	0.11″	1.56″	2018	27%	30.12″
Oct 1	0.11″	1.76″	2019	33%	30.23″
Oct 2	0.11″	3.95″	1954	33%	30.34″
Oct 3	0.11″	2.57″	1991	32%	30.44″
Oct 4	0.10″	2.01″	1955	29%	30.54″
Oct 5	0.10″	1.57″	1955	35%	30.64″
Oct 6	0.11″	1.39″	1930	29%	30.75″
Oct 7	0.11″	1.15″	1882	24%	30.86″
Oct 8	0.11″	2.27″	1954	29%	30.97″
Oct 9	0.10″	3.94″	1954	30%	31.07″
Oct 10	0.10″	0.97″	1932	28%	31.18″
Oct 11	0.09″	1.47″	1972	26%	31.27″
Oct 12	0.09″	3.79″	2001	32%	31.36″
Oct 13	0.09″	4.19″	2017	30%	31.45″
Oct 14	0.09″	1.66″	1967	26%	31.54″
Oct 15	0.10″	1.41″	1878	34%	31.64″
Oct 16	0.11″	2.69″	1998	30%	31.74″
Oct 17	0.11″	3.61″	1988	32%	31.85″
Oct 18	0.12″	2.22″	1885	30%	31.97″
Oct 19	0.12″	0.98″	1993	34%	32.09″
Oct 20	0.11″	2.28″	1933	22%	32.21″
Oct 21	0.10″	2.81″	1983	30%	32.30″
Oct 22	0.10″	1.67″	2020	31%	32.41″
Oct 23	0.11″	1.85″	2021	30%	32.52″
Oct 24	0.10″	1.94″	1883	29%	32.63″
Oct 25	0.11″	2.18″	2019	39%	32.73″
Oct 26	0.11″	1.60″	2016	36%	32.84″
Oct 27	0.11″	1.53″	1874	26%	32.96″
Oct 28	0.12″	1.19″	1875	26%	33.07″
Oct 29	0.11″	1.00″	1996	33%	33.18″
Oct 30	0.10″	2.26″	1994	35%	33.29″
Oct 31	0.10″	2.74″	1985	34%	33.38″
Nov 1	0.09″	1.64″	1992	35%	33.48″
Nov 2	0.09″	1.72″	1946	32%	33.57″
Nov 3	0.09″	1.83″	1959	27%	33.66″
Nov 4	0.09″	3.34″	1883	35%	33.76″
Nov 5	0.09″	1.28″	2024	30%	33.85″
Nov 6	0.09″	1.68″	1895	32%	33.93″
Nov 7	0.08″	1.66″	1877	34%	34.01″
Nov 8	0.07″	2.69″	1966	35%	34.08″
Nov 9	0.07″	2.37″	1995	34%	34.15″
Nov 10	0.07″	3.18″	1881	34%	34.23″
Nov 11	0.07″	0.96″	1879	28%	34.29″
Nov 12	0.06″	1.09″	1951	28%	34.36″
Nov 13	0.07″	1.19″	1926	37%	34.43″
Nov 14	0.07″	1.02″	1968	37%	34.49″
Nov 15	0.07″	0.96″	1909	34%	34.56″
Nov 16	0.07″	1.20″	1928	41%	34.63″
Nov 17	0.07″	1.44″	1921	32%	34.70″
Nov 18	0.07″	0.96″	1985	34%	34.77″
Nov 19	0.07″	1.23″	1970	32%	34.84″
Nov 20	0.07″	1.49″	1906	29%	34.91″
Nov 21	0.08″	1.37″	2010	34%	34.99″
Nov 22	0.08″	1.55″	1983	31%	35.07″
Nov 23	0.09″	0.64″	2009	28%	35.17″
Nov 24	0.09″	1.20″	2018	30%	35.26″
Nov 25	0.09″	1.06″	1908	42%	35.34″
Nov 26	0.09″	2.93″	1990	43%	35.43″
Nov 27	0.09″	1.50″	1879	37%	35.53″
Nov 28	0.09″	1.73″	2006	35%	35.62″
Nov 29	0.09″	0.84″	1881	34%	35.70″
Nov 30	0.09″	1.23″	2006	39%	35.79″
Dec 1	0.09″	4.47″	1982	36%	35.88″
Dec 2	0.09″	1.12″	1873	39%	35.96″
Dec 3	0.08″	1.19″	1973	34%	36.04″
Dec 4	0.08″	1.10″	1906	37%	36.12″
Dec 5	0.08″	1.12″	1998	37%	36.20″
Dec 6	0.08″	1.08″	1966	34%	36.28″
Dec 7	0.07″	1.21″	1885	30%	36.36″
Dec 8	0.07″	1.31″	1953	35%	36.42″
Dec 9	0.07″	2.18″	1971	32%	36.49″
Dec 10	0.07″	1.73″	1949	34%	36.56″
Dec 11	0.07″	1.31″	1946	31%	36.62″
Dec 12	0.06″	1.76″	1972	39%	36.69″
Dec 13	0.07″	1.43″	2011	41%	36.76″
Dec 14	0.07″	1.10″	1971	28%	36.83″
Dec 15	0.07″	1.67″	1921	35%	36.89″
Dec 16	0.07″	1.28″	1921	34%	36.96″
Dec 17	0.06″	1.41″	2002	26%	37.02″
Dec 18	0.06″	2.66″	1895	32%	37.08″
Dec 19	0.06″	1.67″	1895	46%	37.14″
Dec 20	0.06″	1.81″	1949	43%	37.20″
Dec 21	0.06″	0.90″	2006	37%	37.26″
Dec 22	0.06″	2.50″	1871	31%	37.32″
Dec 23	0.06″	2.61″	1965	41%	37.38″
Dec 24	0.07″	0.52″	1932	40%	37.45″
Dec 25	0.06″	0.63″	1949	35%	37.51″
Dec 26	0.07″	1.57″	1942	35%	37.57″
Dec 27	0.07″	1.74″	2008	36%	37.64″
Dec 28	0.07″	1.13″	1968	37%	37.71″
Dec 29	0.07″	0.85″	1906	37%	37.77″
Dec 30	0.07″	1.69″	1972	38%	37.84″
Dec 31	0.06″	0.77″	1984	16%	37.90″

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

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