APRIL CHICAGO NORMALS FOR TEMPERATURE, PRECIPITATION, SNOWFALL (1981-2010)

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

Day of Month	High	Low	Average	HDD	CDD	Precipitation	Snowfall
1	53	34	44	22	0	0.10	0.1
2	54	34	44	21	0	0.11	0.1
3	54	35	44	21	0	0.10	0.1
4	54	35	45	20	0	0.11	0.1
5	55	35	45	20	0	0.10	0.1
6	55	36	45	20	0	0.10	0.0
7	56	36	46	19	0	0.11	0.1
8	56	36	46	19	0	0.11	0.0
9	56	37	46	19	0	0.12	0.1
10	57	37	47	18	0	0.11	0.0
11	57	37	47	18	0	0.12	0.1
12	58	38	48	18	0	0.11	0.0
13	58	38	48	17	0	0.11	0.1
14	58	38	48	17	0	0.11	0.0
15	59	39	49	17	0	0.12	0.1
16	59	39	49	16	0	0.11	0.0
17	60	39	50	16	0	0.12	0.0
18	60	40	50	16	0	0.11	0.1
19	61	40	50	15	0	0.12	0.0
20	61	40	51	15	0	0.11	0.0
21	61	41	51	15	0	0.11	0.0
22	62	41	51	14	0	0.12	0.0
23	62	41	52	14	0	0.11	0.1
24	63	42	52	13	0	0.11	0.0
25	63	42	52	13	0	0.12	0.0
26	63	42	53	13	0	0.12	0.0
27	64	43	53	12	0	0.12	0.0
28	64	43	54	12	0	0.12	0.0
29	64	43	54	12	0	0.12	0.0
30	65	44	54	11	0	0.12	0.0
MONTH	59	38.8	48.9	492	9	3.38	1.2

HDD = A Heating Degree Day represents the number of degree(s) that the mean temperature for the day is below 65 degrees during a day.

CDD = A Cooling Degree Day represents the number of degree(s) that the mean temperature for the day is above 65 degrees during a day.

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Chicago Temperature and Precipitation Records for April

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

APRIL RECORD HIGHS…LOWS…PRECIPITATION…AND SNOW FOR CHICAGO

Day	Record High Temp/Year	Record Low Max/Year	Record High Min/Year	Record Low Temp/Year	Record Precipitation Daily/Year	Record Snow Daily/Year
1	83/2010	26/1881	54/1963	17/1881	1.58/1967	8.2/1970
2	82/1963	30/1936	62/1956	18/1899	1.64/1983	9.4/1975
3	81/1956	30/1954	60/1928	17/1987	0.93/1974	2.7/1984
4	79/1929	28/1891	60/1929	16/1975	1.90/1947	6.4/1920
5	85/1988	31/1982	69/1929	18/1995	2.58/1947	9.4/1982
6	84/1929	32/1982	69/1929	15/1982	1.13/1938	9.0/1938
7	84/1893	32/2007	62/1929	7/1982	0.81/1998	3.0/2003
8	80/1931	32/2003	52/1993	20/1972	1.35/1999	4.5/1938
9	80/1887	33/1874	58/1922	20/1989	1.49/1882	1.8/1961
10	90/1930	32/1892	55/1945	18/1989	2.53/1922	0.8/1973
11	90/1930	33/1882	60/1977	25/1989	2.41/1871	3.0/2007
12	86/1977	34/1950	60/1896	21/1957	1.16/1952	1.7/1973
13	82/1941	33/1950	62/1941	21/1950	1.33/1983	1.2/1907
14	85/2003	32/1893	63/1883	23/1943	1.21/1949	2.2/1980
15	88/2002	34/1928	67/1976	25/1943	1.74/1884	1.5/1980
16	87/2002	27/1875	69/1976	18/1875	1.97/1921	5.4/1961
17	88/1976	26/1875	68/1976	17/1875	2.01/2013	0.5/1949
18	89/2002	35/1926	66/1896	23/1983	3.83/1975	0.6/2011
19	86/1985	34/1904	65/1985	22/1983	1.52/1970	2.0/1888
20	87/1985	32/1904	64/1957	24/1897	2.37/2000	0.2/1943
21	88/1985	35/1936	63/1985	27/1986	1.08/1973	0.6/1903
22	91/1980	38/1936	66/1985	24/1986	1.55/1981	0.2/1893
23	88/1960	35/1910	66/1960	25/1986	1.01/1878	3.1/1967
24	87/1990	36/1892	68/1915	29/2015	2.05/1976	0.9/1910
25	87/1990	40/1910	68/1915	27/1887	1.95/1902	2.5/1910
26	89/1986	38/1907	69/1915	27/2006	1.76/1995	0.8/1910
27	87/1986	39/1934	67/1915	29/1945	2.13/1959	0.2/1950
28	86/1915	39/1874	66/1974	28/1992	2.04/1981	T/2008
29	88/1970	39/1893	68/1970	31/2008	2.75/1909	T/1950
30	91/1942	39/1907	68/1942	30/1873	2.22/2003	0.1/1907

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