Rockford - Extreme Daily Precipitation 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 2018?

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
2.59 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
Reference

Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information. 

Rockford - Extremes
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