Labor Day Weather for Northern Illinois:   Statistics for Chicago and Rockford

 

Rockford:
The following statistics comprises 109 years of data. Data collection for Rockford was at the Greater Rockford Airport.

Graph of high temperatures at Rockford for Labor Day
Frequency distribution of high temperatures for Rockford. This dataset shows that the most frequent range of high temperatures on Labor Day is in between 80 and 89 degrees. There is no normal high temperature since Labor Day does not occur on the same day every year. The highest temperature was 96 degrees, which occurred on September 4th, 1922 and September 3, 2012. This is one of thirteen times that the high temperature reached the 90s on Labor Day in Rockford’s history. The coldest high temperature on Labor Day is 61 degrees which occurred on September 2nd, 1974. In 2013, the high temperature was 76 degrees.

Graph of Low Temperatures on Labor Day at Rockford
Frequency distribution of low temperatures for Rockford. This dataset shows that the most frequent range of low temperatures on Labor Day is in between 50 and 59 degrees. There is no normal low temperature since Labor Day does not occur on the same day every year. The lowest temperature on Labor Day is 35 degrees which occurred on September 2nd, 1946. The highest low temperature for Labor Day was 72 degrees on September 2nd, 1912. In 2013, the low temperature was 57 degrees. 

Graph of Precipitation on Labor Day at Rockford
Frequency distribution of precipitation for Rockford. This dataset shows that the most frequent amount of precipitation recorded on Labor Day is 0.00”, which accounts for 54% of the days in the dataset. The next most frequent range is the 0.02” to 0.25” of precipitation. The highest amount of rainfall on Labor Day occurred on September 1st, 1930 when 1.33” of rain fell. There have been 3 instances dating back to 1905 where over an inch of rain fell on Labor Day. In 2013, no precipitation fell.

 

ADDITIONAL LABOR DAY CLIMATE DATA      ( * MEANS LAST OCCURRENCE)

MAX TEMP
WARMEST

MIN TEMP
WARMEST
PCPN
WETTEST
96
2012 *
72
1912
1.33
1930
95
1959 *
71
1959
1.32
1963
94
1933
70
1983 *
1.30
1936
93
1929
69
1970 *
0.86
2002
92
1927
68
1960 *
0.85
1926
 
MAX TEMP
COLDEST
MIN TEMP
COLDEST
PCPN
DRIEST
61
1974
35
1946
0.00
2013 *
63
1935
42
1953
T
2012 *
65
1988
44
1988
0.01
1974 
66
2011 *
45
1976 *
0.02
1949 *
67
1905
47
1950 *
0.04
1998 *


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