Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >
Updated March 2023.
Chicago
Official weather records for Chicago date back to 1871 for temperatures and precipitation, and to 1884 for snowfall. Observation location history for Chicago can be found here.
 |
| St. Patrick's Day Climate Data for Chicago |
| Top 10 Warmest (Highs) | Top 10 Coldest (Highs) | |||||
| 1 | 2012 | 82 | 1 | 1941 | 11 | |
| 2 | 2009 | 74 | 2 | 1902 | 15 | |
| 1894 | 74 | 3 | 1939 | 23 | ||
| 4 | 2022 | 73 | 4 | 1892 | 24 | |
| 2003 | 73 | 1885 | 24 | |||
| 1966 | 73 | 1875 | 24 | |||
| 7 | 1945 | 68 | 7 | 1967 | 25 | |
| 8 | 2011 | 67 | 8 | 1900 | 26 | |
| 1969 | 67 | 9 | 1906 | 27 | ||
| 10 | 1968 | 64 | 10 | 1916 | 28 | |
| 1874 | 64 | 1876 | 28 | |||
| Top 10 Warmest (Lows) | Top 10 Coldest (Lows) | |||||
| 1 | 2012 | 58 | 1 | 1900 | 0 | |
| 2 | 1894 | 49 | 2 | 1941 | 1 | |
| 3 | 2011 | 48 | 3 | 1902 | 3 | |
| 4 | 2022 | 47 | 1885 | 6 | ||
| 5 | 1927 | 44 | 5 | 1875 | 9 | |
| 6 | 1945 | 43 | 1939 | 11 | ||
| 7 | 1946 | 42 | 1993 | 12 | ||
| 1874 | 42 | 8 | 1906 | 12 | ||
| 9 | 2009 | 41 | 9 | 1967 | 13 | |
| 1999 | 41 | 1909 | 14 | |||
| Top 10 Wettest | Top 10 Snowiest | |||||
| 1 | 1965 | 1.42 | 1 | 1984 | 4.1 | |
| 2 | 1919 | 0.82 | 2 | 1965 | 3.7 | |
| 3 | 1991 | 0.59 | 1904 | 3.7 | ||
| 4 | 1904 | 0.51 | 4 | 1973 | 2.7 | |
| 5 | 1998 | 0.49 | 5 | 1956 | 1.4 | |
| 6 | 1946 | 0.47 | 6 | 2004 | 0.8 | |
| 7 | 1980 | 0.45 | 7 | 2005 | 0.6 | |
| 8 | 2021 | 0.37 | 1960 | 0.6 | ||
| 1930 | 0.37 | 9 | 1934 | 0.5 | ||
| 10 | 1973 | 0.35 | 10 | 4 Years | 0.2 | |
|
Percent of Years (Precip) |
Percent of Years (Snow) |
|||||
| >0 | 53% | >0 | 33% | |||
| >=0.01 | 30% | >=0.1 | 13% | |||
| >=0.1 | 13% | >1 | 4% | |||
| >=0.5 | 3% | >3 | 2% | |||
| More High Temperature Stats | ||||||
| >=60° | 11% | |||||
| <=32° | 16% | |||||
Rockford
Official weather records for Rockford date back to 1905 for temperatures, precipitation, and snowfall. Observation location history for Rockford can be found here.
 |
| St. Patrick's Day Climate Data for Rockford |
| Top 10 Warmest (Highs) | Top 10 Coldest (Highs) | |||||
| 1 | 2012 | 82 | 1 | 1941 | 12 | |
| 2 | 2009 | 75 | 2 | 1906 | 18 | |
| 3 | 2003 | 74 | 3 | 1939 | 22 | |
| 4 | 1966 | 73 | 4 | 1993 | 24 | |
| 5 | 1945 | 70 | 1909 | 24 | ||
| 6 | 2022 | 68 | 6 | 1959 | 25 | |
| 7 | 2011 | 67 | 7 | 1967 | 28 | |
| 1921 | 67 | 8 | 1984 | 30 | ||
| 9 | 1930 | 66 | 9 | 1989 | 31 | |
| 10 | 2010 | 64 | 1978 | 31 | ||
| 1960 | 31 | |||||
| 1943 | 31 | |||||
| Top 10 Warmest (Lows) | Top 10 Coldest (Lows) | |||||
| 1 | 2012 | 57 | 1 | 1941 | -3 | |
| 2 | 2011 | 45 | 2 | 1939 | 8 | |
| 2003 | 45 | 1906 | 8 | |||
| 4 | 1945 | 44 | 4 | 1923 | 9 | |
| 5 | 1966 | 41 | 1909 | 9 | ||
| 1930 | 41 | 6 | 1959 | 10 | ||
| 7 | 2022 | 40 | 7 | 1993 | 11 | |
| 2009 | 40 | 1976 | 11 | |||
| 1946 | 40 | 1913 | 11 | |||
| 10 | 1927 | 39 | 10 | 1967 | 12 | |
| 1926 | 12 | |||||
| Top 10 Wettest | Top 10 Snowiest | |||||
| 1 | 1919 | 0.62 | 1 | 1984 | 4.0 | |
| 2 | 1934 | 0.45 | 2 | 1965 | 2.7 | |
| 3 | 1991 | 0.42 | 3 | 2004 | 1.0 | |
| 4 | 1963 | 0.35 | 4 | 2005 | 0.9 | |
| 5 | 1984 | 0.31 | 5 | 2001 | 0.6 | |
| 6 | 1998 | 0.29 | 1996 | 0.6 | ||
| 7 | 1927 | 0.24 | 1960 | 0.6 | ||
| 8 | 2021 | 0.19 | 8 | 1934 | 0.5 | |
| 1979 | 0.19 | 9 | 1989 | 0.4 | ||
| 10 | 2018 | 0.15 | 1964 | 0.4 | ||
| 1989 | 0.15 | 1935 | 0.4 | |||
|
Percent of Years (Precip) |
Percent of Years (Snow) |
|||||
| >0 | 41% | >0 | 25% | |||
| >=0.01 | 26% | >=0.1 | 13% | |||
| >=0.1 | 12% | >1 | 3% | |||
| >=0.5 | 1% | >3 | 1% | |||
| More High Temperature Stats | ||||||
| >=60° | 15% | |||||
| <=32° | 12% | |||||
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