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Storms in the Plains; Heat Wave to Begin in the Northern Tier

A slow moving weather system will bring potential for scattered strong to severe storms with damaging wind and hail with areas of locally heavy rain in the South and Central Plains through Monday. A heat wave is expected to begin across the Northern Plains, Upper Midwest, and northern Great Basin with temperatures reaching over 20 degrees above normal in some areas. Read More >

 

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

 

Chicago:
The following statistics comprises 126 years of data going back to the start of the holiday in 1894. Data collection began at the University of Chicago, then at Midway, and currently at O'Hare which is now the official station for Chicago.

 

Graph of high temperatures on Labor Day at Chicago
Frequency distribution of high temperatures for Chicago. This dataset shows that the most frequent range of high temperatures on Labor Day is basically a tie between the 70 and 79 degree range, and 80 to 89. There is no normal high temperature since Labor Day is not always on the same day. The highest temperature on Labor Day is 97 degrees which occurred on September 6th, 1954. This was one of 9 times in Chicago’s history that the high temperature on Labor Day was in the 90s. The coldest high temperature on Labor Day is 61 degrees which occurred on September 2nd, 1974. 

 

Low temperatures on Labor Day in Chicago
Frequency distribution of low temperatures for Chicago. This dataset shows that the most frequent range of low temperatures on Labor Day is in between 60 and 69 degrees. There is no normal low temperature since Labor Day is not always on the same day. The record low is 44 which occurred on September 2nd, 1946 and September 5th, 1988. The highest low temperature for Labor Day was 76 degrees on September 7th, 2015. 

 

Precipitation on Labor Day in Chicago
Frequency distribution of precipitation for Chicago. This dataset shows that the most frequent amount of precipitation recorded on Labor Day is 0.00”, which accounts for 56% of the days in the dataset. The next most frequent range is the 0.02” to 0.25. The highest amount of rainfall on Labor Day occurred on September 3, 2018 when 1.79” of rain fell. There have been 7 instances dating back to 1894 where an inch or more of rain fell on Labor Day.

 

ADDITIONAL LABOR DAY CLIMATE DATA      ( * MEANS LAST OCCURRENCE)

MAX TEMP
WARMEST

MIN TEMP
WARMEST
PCPN
WETTEST
97
1954
76
2015
1.79
2018
96
1959
75
1973 *
1.49
1912
95
1983 *
73
1970
1.30
1963
94
1964
72
1913
1.20
1898
93
1973
71
2012 *
1.06
1983
 
MAX TEMP
COLDEST
MIN TEMP
COLDEST
PCPN
DRIEST
61
1974
44
1988 *
0.00
2016 *
63
1935 *
46
1972
T
2017 *
64
1988
50
1993 *
0.01
1948 
65
2011 *
51
1984
0.02
1968 *
66
1914
52
2011 *
0.04
1970 *