St. Patrick's Day Weather for Northern Illinois:   Statistics for Chicago and Rockford

 

 
Rockford:
The following statistics comprises 106 years of data. Data collection for Rockford has been at the Greater Rockford Airport

Graph of high temperatures at Rockford on St. Patrick's Day

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, followed very closely by the 40-49 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 82 degrees set in 2012. The record lowest high temperature on St. Patrick’s Day is 12 degrees, which occurred in 1941. In 2013, the high temperature was 35 degrees.

Graph of Low Temperatures in Rockford on St. Patrick's Day

 

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. In 2013, the low temperature was 22 degrees.

Precipitation at Rockford on St Patricks Day

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 no rain in 2013.

Graph of Snowfall on St. Patricks Day in Rockford

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 80% 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. In 2013, no snow fell.

 

ADDITIONAL ST. PATRICK'S DAY CLIMATE DATA     ( * MEANS LAST OCCURRENCE)

MAX TEMP
WARMEST

MIN TEMP
WARMEST
PCPN
WETTEST
SNOW
MOST
82
2012
57
2012 
0.62
1919
4.1
1984
75
2009 
49
1894
0.45
1934
3.7
1904, 1965
74
2003
44
1927
0.42
1991
2.7
1993
73
1966
43
1945 
0.35
1965
70
1945 
42
1946 *
0.31
1984
67
2011 *
41
2009 *
0.29
1998
66
1930 
40
2003 *
0.24
1927
64
2010*
39
1919
0.19
1979
63
1969 *
38
1918 * 
0.15
1989
62
1968
37
1942 *  
0.14
2004 *
 
MAX TEMP
COLDEST
MIN TEMP
COLDEST
PCPN
DRIEST
SNOW
LEAST
12
1941
-3
1941
0.00
2013 * 
0.0
2013 *
18
1906
8
1939 *
T
2002 *
T
2002 *
22
1939
9
1923 *
0.01
1966
0.1
1913
24
1993 *
10
1959
0.02
1980 *
25
1959
11
1993 * 
0.04
2005 * 
28
1967
12
1967 *
0.05
2012 * 
30
1984
13
1949 
0.06
2008 * 
31
1989 *
15
1978 *
0.09
1966 *
32
1955 *
16
1970 * 
0.12
1977 * 
33
2005 *
17
1960
 

 ACS 3/07/2014


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