| St. Patrick's Day Weather for Northern Illinois: Statistics for Chicago and Rockford
Rockford:
The following statistics comprises 103 years of data. Data collection for Rockford has been at the Greater Rockford Airport
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Frequency distribution of high temperatures for Rockford. This dataset shows that the most frequent range of high temperatures on St. Patrick’s Day is in the 30 to 39 degree range. The normal high temperature at Rockford is 46 degrees, which falls in the 2nd most frequent range. The record high temperature on St. Patrick’s Day is 74 degrees set in 2003. The record lowest high temperature on St. Patrick’s Day is 12 degrees, which occurred in 1941. Last year, the high temperature was 40.
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Frequency distribution of low temperatures for Rockford. This dataset shows that the most frequent range of low temperatures on St. Patrick’s Day is in the 20 to 29 degree range. The normal low temperature at Rockford is 27 degrees which falls in the most frequent range. The record low temperature for Rockford on St. Patrick’s Day is -3, which was set in 1941. The record highest low on St. Patrick’s Day is 45 in 2003. The low temperature last year was 29 degrees.
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Frequency distribution of precipitation for Rockford. This dataset shows that the most frequent amount of precipitation recorded on St. Patrick’s Day is 0.00”, which accounts for 69% of the days in the dataset. The next most frequent range is the 0.02” to 0.25” range. The highest amount of precipitation on St. Patrick’s Day occurred in 1919 when 0.62” of precipitation fell. There has never been an instance where over an inch of precipitation fell on St. Patrick’s Day. There was 0.06" of precipitation last year.
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Frequency distribution of snowfall for Rockford. This dataset shows that the most frequent amount of snowfall recorded on St. Patrick’s Day is 0.0”, which accounts for 79% of the days in the dataset. The next most frequent range the 0.1” to 0.9” range. The highest amount of snowfall recorded on St. Patrick’s Day occurred in 1984 when 4.0” of snow fell. Last year, 0.2" of snow fell.
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