Rockford IL Most Precipitation in a Day for Each Year

This page lists the biggest rainstorms or snowstorms of the year in Rockford, Illinois along with the date they occurred. The information answers questions like: When was the last time more than five inches of precipitation landed on Rockford in a single day? What was the rainiest day of 2019?

This page gives the highest daily precipitation for each year in Rockford and the date that it happened. A date with a plus sign beside it means the same amount of moisture also fell on at least one other day earlier that year.

These records go back to 1906, with a few years missing data. During that time the heaviest downpour measured for a single day was 5.70 inches (144.8 millimetres) on August 14, 1987.

Since 1951 the precipitation extremes were observed at Rockford International Airport. Before then, the weather station was in downtown Rockford.

Most precipitation in one day for recent years in Rockford
Inches	Date	Millimetres
2.71	October 13, 2023	68.8
4.46	September 11, 2022	113.3
2.52	August 09, 2021	64.0
2.06	September 08, 2020	52.3
2.92	September 12, 2019	74.2
2.59	June 15, 2018	65.8
4.11	June 28, 2017	104.4
1.64	July 23, 2016	41.7
2.87	August 18, 2015	72.9
2.24	August 21, 2014	56.9
3.06	April 17, 2013	77.7
2.26	April 15, 2012	57.4
3.93	September 26, 2011	99.8
4.70	July 23, 2010	119.4

Highest daily precipitation recorded at Rockford each year
Inches	Date	Millimetres
4.20	June 19, 2009	106.7
2.38	September 04, 2008	60.5
5.15	August 07, 2007	130.8
1.71	April 16, 2006	43.4
2.23	August 18, 2005	56.6
2.70	August 03, 2004	68.6
1.60	December 10, 2003	40.6
3.80	June 04, 2002	96.5
2.40	September 20, 2001	61.0
3.10	September 11, 2000	78.7
2.15	September 28, 1999	54.6
2.01	October 17, 1998	51.1
2.79	May 24, 1997	70.9
4.77	May 28, 1996	121.2
1.80	June 27, 1995	45.7
2.52	June 19, 1994	64.0
2.04	June 18, 1993	51.8
1.66	December 15, 1992	42.2
2.82	September 12, 1991	71.6
3.41	August 19, 1990	86.6
2.00	July 29, 1989	50.8
1.31	January 19, 1988	33.3
5.70	August 14, 1987	144.8
3.26	September 24, 1986	82.8
1.85	October 18, 1985	47.0
2.18	July 10, 1984	55.4
2.39	May 22, 1983	60.7
2.55	July 21, 1982	64.8
2.55	June 13, 1981	64.8
2.69	June 07, 1980	68.3
2.17	April 25, 1979	55.1
2.55	June 25, 1978	64.8
3.61	May 15, 1977	91.7
2.50	March 04, 1976	63.5
1.52	November 29, 1975	38.6
2.54	May 16, 1974	64.5
3.38	April 21, 1973	85.9
4.22	August 25, 1972	107.2
1.71	December 15, 1971	43.4
2.21	September 17, 1970	56.1
3.43	July 26, 1969	87.1
3.58	August 16, 1968	90.9
3.32	June 10, 1967	84.3
2.14	May 11, 1966	54.4
2.24	September 20, 1965	56.9
2.34	April 21, 1964	59.4
2.62	April 29, 1963	66.5
2.33	July 02, 1962	59.2
5.56	September 13, 1961	141.2
2.56	October 13, 1960	65.0
4.22	July 18, 1959	107.2
2.84	July 02, 1958	72.1
1.58	August 28, 1957	40.1
1.91	April 27, 1956	48.5
1.45	March 03, 1955	36.8
4.78	October 10, 1954	121.4
1.78	June 05, 1953	45.2
4.70	July 18, 1952	119.4
4.99	July 08, 1951	126.7
3.20	September 21, 1950	81.3
1.65	September 12, 1949	41.9
1.57	May 10, 1948	39.9
–	1947	–
–	1946	–
2.35	May 14, 1945	59.7
2.25	August 31, 1944	57.2
2.15	August 13, 1943	54.6
4.50	August 02, 1942	114.3
5.45	September 09, 1941	138.4
3.35	June 18, 1940	85.1
1.75	August 08, 1939 +	44.5
2.00	January 24, 1938	50.8
2.50	June 13, 1937	63.5
2.85	June 02, 1936	72.4
2.80	July 02, 1935	71.1
1.43	November 19, 1934	36.3
3.56	July 02, 1933	90.4
1.45	October 10, 1932	36.8
1.60	March 28, 1931	40.6
1.90	September 02, 1930	48.3
2.46	April 20, 1929	62.5
2.70	November 17, 1928	68.6
1.82	April 19, 1927	46.2
4.67	June 14, 1926	118.6
1.23	September 30, 1925	31.2
1.67	June 08, 1924	42.4
1.82	June 07, 1923	46.2
2.57	July 10, 1922	65.3
1.75	June 15, 1921	44.5
–	1920	–
2.51	October 31, 1919	63.8
1.26	September 11, 1918	32.0
1.36	October 18, 1917	34.5
2.87	June 07, 1916	72.9
1.72	September 26, 1915	43.7
1.95	May 28, 1914	49.5
2.65	July 09, 1913	67.3
2.97	July 21, 1912	75.4
2.53	April 30, 1911	64.3
0.96	May 29, 1910	24.4
2.78	May 27, 1909	70.6
1.32	March 26, 1908	33.5
1.74	September 18, 1907	44.2
3.92	September 29, 1906	99.6

Rockford - Extreme Daily Precipitation for Each Year

Reference

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