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

 

Chicago:
The following statistics comprises 141 years of data. However snowfall data started in 1885 so it comprises 129 years. 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 Valentine's Day at Chicago

Frequency distribution of high temperatures for Chicago. This dataset shows that the most frequent range of high temperatures on Valentine’s Day is in the 30 to 39 degree range. The normal high temperature at Chicago is 35 degrees, which falls right in that range. The record high temperature on Valentine's Day is 62 degrees set in 1954. The record lowest high temperature on Valentine’s Day is 8 degrees, which occurred in 1879 and 1943. In 2013, the high temperature was 39 degrees.

Graph of Low Temperatures on Valentine's Day at Chicago

Frequency distribution of low temperatures for Chicago. This dataset shows that the most frequent range of low temperatures on Valentine’s Day is in the 20 to 29 degree range. The normal low temperature at Chicago is 20 degrees which falls in that range. The record low temperature for Chicago on Valentine's Day is 11 below set in 1905. The record highest low on Valentine’s Day is 43 in 1954. The low temperature in 2013 was 33 degrees.

Graph of Precipitation on Valentine's Day in Chicago

Frequency distribution of precipitation for Chicago. This dataset shows that the most frequent amount of precipitation recorded on Valentine’s Day is 0.00”, which accounts for 38% of the days in the dataset. The next most frequent range is a Trace closely followed by the 0.02” to 0.25” range. The highest amount of precipitation on Valentine’s Day occurred in 1950 when 0.94” of precipitation fell. There has never been an instance of over an inch of precipitation on Valentine’s Day. In 2013, a trace of precipitation fell.

Graph of Snowfall on Valentine's Day in Chicago

Frequency distribution of snowfall for Chicago. This dataset shows that the most frequent amount of snowfall recorded on Valentine’s Day is 0.0”, which accounts for 50% of the days in the dataset. The next most frequent range is a Trace, followed by 0.1” to 0.9”. The highest amount of snowfall recorded on Valentine’s Day occurred in 1990 when 8.3” of snow fell. In 2013, no snow fell.

 

ADDITIONAL VALENTINE'S DAY CLIMATE DATA     ( * MEANS LAST OCCURRENCE)

MAX TEMP
WARMEST

MIN TEMP
WARMEST
PCPN
WETTEST
SNOW
MOST
62
1954
43
1954
0.94
1950
8.3
1990
61
1918
37
2005 * 
0.78
1990
3.3
1973 *
58
1887
36
1919 *
0.66
1909
2.4
1991 *
56
2006 *
35
1967 *
0.59
1883
55
1984 
34
1947 *
0.54
1908
53
1915
33
2013 * 
0.48
1890
51
1883 *
32
1926 *
0.41
1973
50
1961
31
1992 * 
0.39
1887
49
2005 *
29
2012 * 
0.34
1988
47
1999 *
28
2001 *
0.26
1949
 
MAX TEMP
COLDEST
MIN TEMP
COLDEST
PCPN
DRIEST
SNOW
LEAST
8
1943 *
-11
1905
0.00
2011 *
0.0
2013 *
10
1923
-3
1943
T
2013 *
T
2012 * 
14
1905
-2
1879
0.01
2009 *
0.1
2009 *
15
1875
-1
1923 * 
0.02
1978 *
19
1985 
0
1946 * 
0.03
2007 *
21
2007 * 
1
1920
0.04
1972 *
22
1970
2
1884
0.05
1986 * 
23
1951 * 
4
1985 * 
0.06
1985
24
1946 * 
5
1971
0.07
1918
25
1899
6
1986 *
0.08
1958

ACS 3/22/2011


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.