Christmas Weather for Northern Illinois:   Statistics for Chicago and Rockford

 

Rockford: 
The following statistics comprises 108 years of data. Data collection for Rockford has always been at the Greater Rockford Airport.

Graph of high temperatures on Christmas
 
Frequency distribution of high temperatures for Rockford. This dataset shows that the most frequent range of high temperatures on Christmas is in the 30 to 39 degree range. The normal high temperature on Christmas at Rockford is 31 degrees.  The highest temperature recorded on Christmas is 58 degrees which was set in 1982. This is one of three times that the high temperature reached the 50s on Christmas in Rockford’s history. The coldest high temperature on Christmas is -5 degrees which occurred in 1983. In 2012, the high temperature was 26 degrees, which is in the 2nd most common range of high temperatures.

Graph of low temperatures on Christmas day
Frequency distribution of low temperatures for Rockford. This dataset shows that the most frequent range of low temperatures on Christmas is in between 20 and 29 degrees. The normal low temperature on Christmas in Rockford is 15 degrees. The lowest temperature recorded on Christmas in Rockford is -22 degrees which occurred in the year 2000. The highest low temperature for Christmas was 43 degrees in 1936 and 1940. In 2012, the low temperature was 13 degrees.

Frequency distribution of precipitation for Rockford. This dataset shows that the most frequent amount of precipitation recorded on Christmas is 0.00”, which accounts for 51% of the days in the dataset. The next most frequent range is a trace of precipitation. The highest amount of precipitation on Christmas occurred in 1945 when 1.25” of precipitation fell. This is the only instance where over an inch of rain fell on Christmas. In 2012, no precipitation fell.

Graph of snow fallen on Christmas
 
Frequency distribution of snowfall for Rockford. This dataset shows that the most frequent amount of snowfall recorded on Christmas is 0.0”, which accounts for 60% of the days in the dataset. The next most frequent range is a trace. The highest amount of snow that has fallen on Christmas is 6.0” in 1909. In 2012, no snow fell.

 

ADDITIONAL CHRISTMAS CLIMATE DATA     ( * MEANS LAST OCCURRENCE)

MAX TEMP
WARMEST

MIN TEMP
WARMEST
PCPN
WETTEST
SNOW
MOST
58
1982
43
* 1940
1.25
1945
6.0
1909
52
* 1936
35
1973
0.55
1957
4.0
1950
49
1922
33
* 2005
0.42
1950
3.4
1951
48
1940
32
* 1972
0.33
1909
2.5
1935
47
* 1943
30
* 1971
0.32
1973
2.1
1962
46
1939
29
* 2006
0.30
1920
45
* 1994
27
* 1954
0.25
2009
44
2011
26
* 1956
0.22
1935
43
1946
25
1987
0.21
1951
42
1960 
24
* 1997
0.17
1962
 
MAX TEMP
COLDEST
MIN TEMP
COLDEST
PCPN
DRIEST
SNOW
LEAST
-5
1983
-22
2000
0.00
* 2012
0.0
* 2012
2
1985
-15
1983
T
*2005
T
* 2005
5
1996
-12
1985
0.01
* 1967
0.1
* 2001
7
2000
-11
* 1980
0.02
* 1971
0.2
* 2010 
9
* 1977
-10
1914
0.03
* 1989
0.3
1970
10
1924
-7
* 1984
13
1910
-6
* 1990
14
* 1993
-3
* 1996
15
1950
-2
1968
17
1968
-1
* 1933

ACS 12/20/13


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