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Sunday, January 31, 2010

JANUARY CHICAGO NORMALS FOR TEMPERATURE, PRECIPITATION, SNOWFALL (1981-2010)

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

Day of MonthHighLowAverageHDDCDDPrecipitationSnowfall
13217244100.060.3
23117244100.070.3
33117244100.060.4
43117244100.060.3
53117244100.060.3
63117244100.070.3
73117244100.060.4
83117244100.060.3
93117244100.060.4
103117244100.060.3
113116244100.060.3
123116244100.060.4
133116244100.050.3
143116244100.060.4
153116244200.060.3
163116244200.050.3
173116234200.060.4
183116234200.050.4
193116234200.050.4
203116234200.060.3
213116244200.050.4
223116244200.050.4
233116244100.050.3
243116244100.060.4
253116244100.040.3
263116244100.050.4
273116244100.050.3
283117244100.050.4
293117244100.050.3
303217244100.050.4
313217244100.050.4
MONTH31.016.523.8127901.7310.8




HDD = A Heating Degree Day represents the number of degree(s) that the mean temperature for the day is below 65 degrees during a day.

CDD = A Cooling Degree Day represents the number of degree(s) that the mean temperature for the day is above 65 degrees during a day.

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS

Chicago Temperature and Precipitation Records for January

JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC

JANUARY RECORD HIGHS…LOWS…PRECIPITATION…AND SNOW FOR CHICAGO
DayRecord
High
Temp/Year
Record
Low Max/Year
Record
High
Min/Year
Record
Low
Temp/Year
Record
Precipitation Daily/Year
Record Snow Daily/Year
165/18765/196943/1950-10/19691.33/19485.0/1918
261/20042/192047/1897-16/18791.24/199918.6/1999
360/19500/187946/1874-18/18791.24/18977.1/1971
464/1997-6/188441/1909-14/18841.20/19935.6/2004
556/1890-5/192444/1946-18/18840.80/19298.7/2014
660/2008-2/201441/2008-16/20141.44/191814.4/1918
765/2008-4/194251/2008-16/19120.65/19073.1/1893
863/19650/197045/1876-11/19421.18/19353.6/1974
960/18800/196245/1939-20/18750.76/19466.8/1977
1060/1975-4/198242/1975-26/19822.29/19754.6/1993
1161/18804/198242/2013-11/19770.64/19185.9/1918
1262/20052/199742/1932-14/19182.76/19608.1/1908
1358/1932-2/189344/1932-9/19291.37/195016.5/1979
1460/19281/199441/1953-14/19791.10/18716.3/1929
1560/1949-5/197240/1894-19/19790.81/18774.2/1997
1657/1990-7/197742/1913-25/19820.90/20176.4/1885
1760/18943/199742/1973-23/19820.70/19104.9/1970
1861/1996-11/199447/1973-21/19941.51/18765.3/1943
1957/19333/199438/1880-23/19851.72/19078.8/1963
2063/1906-4/198545/1921-27/19851.13/18988.0/1886
2162/1906-4/188343/1916-22/19841.49/19165.0/1958
2259/1909-4/188351/1909-17/19361.39/18876.2/2005
2365/1909-4/196356/1909-18/19630.89/19994.5/1897
2465/1967-2/190444/1967-15/18970.76/19385.7/1893
2567/1950-10/189745/1916-20/18971.12/19905.0/1898
2662/1944-3/189749/1916-16/18971.66/196716.4/1967
2762/1916-1/189547/1944-10/19550.74/19676.6/1967
2860/1914-3/196640/1968-13/19770.71/19092.4/2003
2963/2013-6/196639/2013-16/19661.33/20135.3/1909
3055/19883/200446/1988-15/19660.97/193914.9/1939
3165/19891/197145/1877-12/19851.52/19149.5/1914






CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...

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CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...

Friday, January 1, 2010

MOON







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CHICAGO TEMPERATURE RECORDS

Chicago’s Temperature Records
 
Chicago’s 100's
Daily high temperatures of 100 degrees or greater recorded in Chicago-from earliest to most recent.

Date
Temperature
July 16, 1887100
July 17, 1887100
July 10, 1901102
July 21, 1901103
*July 3, 1911100
*July 4, 1911102
*July 5, 1911102
July 27, 1916100
July 30, 1916102
August 5, 1918102
August 6, 1918101
August 12, 1918101
July 19, 1930101
June 7, 1933100
June 27, 1933100
June 1, 1934102
July 22, 1934101
July 24, 1934105
August 8, 1934100
July 10, 1936102
September 7, 1939100
July 24, 1940101
July 25, 1940101
July 17, 1942100
June 27, 1944100
July 18, 1946100
*August 4, 1947100
*August 5, 1947100
*August 6, 1947101
August 24, 1947100
July 3, 1949102
June 28, 1952101
June 19, 1953102
June 20, 1953104
September 1, 1953101
September 2, 1953101
June 25, 1954100
July 27, 1955100
July 1, 1956103
September 7, 1960100
June 27, 1971101
June 28, 1971101
July 10, 1976100
July 7, 1980102
July 20, 1980101
July 22, 1983100
July 28, 1983100
**June 20, 1988104
**June 21, 1988101
**June 25, 1988103
**July 14, 1988100
**July 15, 1988102
**August 1, 1988100
**August 2, 1988100
July 10, 1989101
July 22, 1991101
August 2, 1991101
July 13, 1995104
July 14, 1995100
July 30, 1999101
July 24, 2005102
June 28, 2012100
* July 4, 2012102
* July 5, 2012103
* July 6, 2012103
* Greatest number of consecutive 100 degree days (3)
**Greatest number of 100 degree days in one year (7)
 
Number of Days of 100 degrees or More by Decade
1872-18790
1880-18892
1890-18990
1900-19092
1910-19198
1920-19290
1930-19399
1940-194910
1950-19598
1960-19691
1970-19793
1980-198912
1990-19995
2000-20091
2010-20124

Greatest Consecutive Number of Days in Each
Year with Maximum Temperature 90 Degrees or Higher
 
1871…01872…41873…21874...31875…01876…4
1877…11878…21879…31880…41881…31882…1
1883…31884…11885…21886…11887…31888…2
1889…21890…31891…31892…51893…31894…3
1895…41896…41897…31898…51899…11900…8
1901…21902…11903…51904…31905…31906…3
1907…11908…31909…21910…31911…61912…2
1913…31914…31915…11916…51917…41918…4
1919…31920…51921…51922…41923…81924…1
1925…31926…31927…41928…21929…21930…5
1931…61932…51933…31934…81935…21936…5
1937…21938…21939…41940…71941…31942…3
1943…41944…71945…31946…31947…81948…8
1949…61950…21951…21952…51953…111954…11
1955…111956…51957…31958…21959…111960…5
1961…31962…61963…31964…71965…21966…4
1967…21968…51969…51970…71971…41972…4
1973…101974…31975…41976…31977…91978…6
1979…11980…91981…21982…21983…91984…4
1985…41986…51987…101988…91989…21990…2
1991…51992…21993…21994…61995…51996…3
1997…51998…31999…52000…32001…52002…5
2003…22004…12005…82006…62007…42008...3
2009...32010...52011...5
 2012...7
  
 
Greatest Consecutive Number of Days with 
Maximum Temperature 90 Degrees or Higher
11 days:10 days:
August 24-September 3, 1953August 25-September 3, 1973
June 11-21, 1954July 17-26, 1987
July 26-August 5, 1955 
August 19-29, 1959 
   
Greatest Number of Days with Maximum
Temperature 90 Degrees or Higher in any Year*
 
1)      47 (1988)6) 35 (1964 and 1971)
2)      46 (1955)7) 34 (1944)
3)      39 (1959)8) 33 (1977 and 1987)
4)      38 (1952)9) 32 (1934)
5)      36 (1954) 
*The normal amount of days where the maximum temperature reaches at least 90 degrees:
O’Hare…18
Midway…21
Northerly Island…10
 
Greatest Number of Days with Maximum 
Temperature 90 Degrees or Higher by Month
2 (April 1930)18 (August 1947)
10 (May 1977) 8 (September 1959 and 1971)
16 (June 1954)2 (October 1971)
19 (July 1955 and 1987) 

                                                                                                                                                                                                              
Least Number of Days with Maximum
Temperature 90 Degrees or Higher in any Year
 
0 (1871 and 1875) 3 (2004 and 1902)
1 (1882 and 1915)4 (1904, 1907, 1917, 1967, and 2000)
2 (1889 and 1979) 5 (1909)
                                                     
                                                      
                                                     
Lowest Temperatures Recorded
in Chicago (-16 Degrees and Lower)
 
-16
January 2, 1879 
-19
January 16, 1977

January 15, 1893

January 14, 1979

January 26, 1897

January 9, 1982

January 7, 1912

January 19, 1994

January 18, 1930



January 29, 1966
-20
January 9, 1875

January 16, 1994

January 25, 1879

January 6, 2014

January 20, 1984




 -17
February 8, 1899
-21
December 22, 1872

February 12, 1899

February 9, 1899

January 22, 1936

December 23, 1983

February 5, 1979

January 18, 1994

December 25, 1983



 January 15, 1994
-22
January 21, 1984

 


-18
December 23, 1872
-23
December 24, 1872

February 23, 1873

January 17, 1982

January 3, 1876



January 5, 1884
-25
January 16, 1982

February 10, 1899

December 24, 1983

February 13, 1905



January 23, 1963
-26
January 10, 1982
 
December 22, 1983
  
-27       January 20, 1985*      (wind chill reached –60 with sustained winds around 25 mph)
 

Lowest Daily Mean Temperatures Recorded
in Chicago (-10 Degrees and Lower)
-10January 4, 1884-13January 16, 1977
 January 15, 1893  
 January 26, 1897-14February 9, 1899
 February 10, 1899 December 23, 1983
 January 20, 1984  
  -15January 25, 1879
-11January 5, 1885 January 10, 1982
 February 8, 1888  
 February 13, 1905-16January 20, 1985
 January 23, 1963 January 18, 1994
 December 25, 1983  
 January 15, 1994-18December 24, 1983
 February 2, 1996  
    
-12February 9, 1933  
 February 3, 1996  
     
Greatest Consecutive Number of Days in Each
Year with Minimum Temperature Zero Degrees or Lower
1872…4
1873…5
1874....2
1875…8
1876…3
1877…2
1878…2
1879…5
1880…5
1881…1
1882…2
1883…6
1884…5
1885…6
1886…3 
1887…3 
1888…6 
1889…3
1890…2 
1891…2
1892…3
1893…5
1894…2 
1895…4
1896…3
1897…3
1898…3 
1899…7
1900…5
1901…4
1902…4
1903…4
1904…3
1905…5 
1906…0
1907…3
1908…1
1909…2
1910…2 
1911…1
1912…10
1913…1
1914…2
1915…3
1916…3
1917…5 
1918…3
1919…3
1920…2
1921…0
1922…2 
1923…2
1924…3 
1925…2
1926…2
1927…3
1928…3
1929…3
1930…3
1931…0
1932…2
1933…3
1934…3
1935…4
1936…7
1937…0
1938…1
1939…0
1940…3
1941…2
1942…7
1943…2
1944…2
1945…6
1946…2
1947…2
1948…3
1949…2
1950…2
1951…3
1952…1
1953…1
1954…1
1955…4
1956…0
1957…3
1958…3
1959…2
1960…3
1961…2
1962…4
1963…9
1964…0
1965…8
1966…4
1967…2
1968…6
1969…1
1970…5
1971…4
1972…3
1973…1
1974…2
1975…2
1976…3
1977…5
1978…4
1979…7
1980…2
1981…3
1982…6
1983…5
1984…4
1985…5
1986…4
1987…3
1988…7
1989…5
1990…2
1991…1
1992…2
1993…2
1994…8
1995…2 
1996…6
1997…4
1998…1
1999…3
2000…6
2001…1
2002…2
2003…1
2004…3
2005…1
2006…1
2007…6
 2008...2
 2009...4
2010…1
2011…2
2012…0
  


Greatest Consecutive Number of Days
with Minimum Temperature Zero or Lower
10 days:9 days:
January 4-January 13, 1912December 13-21, 1963
 
                                                                                                                       
                                                               
Greatest Number of Days in a Month
with a Minimum of Zero or Less
 
17January, 197713January, 1887
   January, 1888
15January, 1963 January, 1912
   February, 1936
14February, 1875 January, 1982
 January, 1979  
  12 January, 1885
                                                                   
Greatest Number of Days During
Winter with Temperatures Below Zero
 
1884-85…25
1935-36…24
1962-63…24
1981-82…22
1874-75…21
1978-79…21
1872-73…19
 
Winters without any Zero or Lower Temperature*
Lowest Temperature that winter in parentheses
 
1881-82 (1)
1938-39 (2)
1905-06 (6)
1955-56 (2)
1930-31 (6)
1959-60 (6)
1931-32 (1)
1982-83 (3)
1936-37 (1)
 2011-12 (5)
*(Normally there are 13 days of sub-zero low temperatures)
 
Years without any Zero or Lower Temperature
Lowest Temperature that year in parentheses
 
1906 (6)
1939 (3)
1921 (8)
1956 (2)
1931 (6)
1964 (2)
1937 (1)
 2012 (5)
                                                                 
Longest Continuous Period Below Freezing
 
43 days
December 28, 1976-February 8, 1977


33 days 
January 15, 1985-February 16, 1985


29 days
December 18, 1878-January 15, 1879

January 22, 1895-February 19, 1895


28 days
January 22, 1905-February 18, 1905

December 28, 1917-January 24, 1918
 
Longest Consecutive Number of Hours Below Zero
 
100 hours
December 22nd -December 25, 1983
 
First Freeze of the Season
 
Average Date:October 15th
Earliest Date:September 22, 1995 (32)
Latest Date:November 24, 1931 (30)
               
 
Last Spring Freeze of the Season
 
Average Date:April 23rd
Earliest Date:March 19, 1925 (28)
Latest Date:May 25, 1992 (32)
 
 
First Killing Frost (28 Degrees or Lower)
 
Average Date:October 27th
Earliest Date:October 2, 1974 (28)
Latest Date:December 3, 1899 (27)
               
Largest Temperature Change from One Day to the Next
High and Low temperatures for the days in parentheses
 
Drop of 61 Degrees:November 11-12, 1911(74/32; 32/13)
   
Drop of 58 Degrees:February 8-9, 1900(62/10; 19/4)
 December 13-14, 1901(49/8; 8/-9)
   
Drop of 57 Degrees:January 18-19, 1996(61/13; 13/4)
   
Rise of 58 Degrees:February 13-14, 1887(30/0; 58/18)
 March 10-11, 1972(40/15; 73/30)
   
Rise of 56 Degrees:April 9-10, 1977(62/29; 85/48)
 April 23-24, 1986(63/25; 81/47)
           
 
Biggest Range in a Single Calendar Day
High and Low temperature in parentheses
 
52 Degrees:February 8, 1900(62/10)
   
51 Degrees:February 21, 1873(40/-11)
 January 13, 1888(42/-9)
   
49 Degrees:March 29, 1895(80/31)
        
 
Greatest One Hour Drop in Temperature
 
30 Degrees                        March 26, 1908
71 degrees at 2 pm and dropped to 41 degrees at 3pm.
 :                                                                      
                                                                           
Other Significant Temperature Changes

  
April 20, 1936-The temperature fell from 82 degrees to 55 in 10 minutes.  Thereafter, the temperature fell to 32 degrees by 4am on the 21st.
January 30, 1938-The temperature fell from 45 degrees at 7am to zero 24 hours later.
May 9, 1963-Grant Park, Lake Effect.  22 degree drop from 84 degrees to 62 in 150 seconds.

SOURCE:
National Weather Service Chicago: Chicago's Temperature Records

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ... | NWS Chicago Office OBSERVED WEATHER REPORTS