National Weather Service United States Department of Commerce
PITTSBURGH SNOWFALL RECORDS Based on records since March 1884	

 

LARGESTSNOW STORMS ON RECORD   RECORD SNOWFALL IN 1 DAY

27.4"  November 24-26, 1950                               23.6"  March 13, 1993

25.9"  December 16-18, 1890                               22.0"  December 17, 1890

25.3"  March 12-14, 1993                                     16.5"  January 8, 1884

21.1"  February 5-6, 2010                                    16.3"  March 3, 1942

18.5"  January 8-9, 1886                                     15.0"  March 5, 1902

18.0"  January 8-9, 1884

17.8"  February 18-21, 1927

16.3"  March 3, 1942

16.3"  February 13-14, 1940

15.6"  January  12-13, 1964

15.1"  February 16-18, 2003

 

 


                                                        
                GREATEST DEPTHS OF SNOW ON THE GROUND

                     26"  January  22, 1978

                     25"  March    14, 1993

                     25"  January  21, 1978

                     24"  March    15, 1993

                     23"  January  23, 1978

                     22"  March    16, 1993

                     22"  January  24, 1978

                     22"  November 26, 1950



                  EARLIEST AND LATEST SNOW ON RECORD

Earliest recorded snow :                                    September 23, 1989 (Trace)

Earliest recorded accumulation of snow:             October 18, 1972   (1.8")

Latest recorded snow:                                       May 31, 1893       (Trace)

Latest recorded accumulation of snow:               May 25, 1925       (0.5")

Latest recorded 1" or more accumulation:           May 9, 1966        (3.1")



        SNOWFALL NORMALS (30 yr mean 1981-2010)

September   0.0        January   11.8        May      T

October     0.4          February  10.3       June    0.0

November   2.0         March      7.6        Annual 41.9

December   8.3         April      1.5



                   FREQUENCY OF HEAVY SNOWFALLS

Snowfalls of 16 inches or more...............once in 15 years

Snowfalls of 13-15 inches or more............once in 5 years

Snowfalls of 8-12 inches or more.............once every two years

Snowfalls of 5 inches or more................twice a year



                        SNOW AND CHRISTMAS

Frequency of a White Christmas in Pittsburgh (1" or more of new snow on 12/25) is about 10 percent. 

Chance of having a trace or more of snow on the ground is 38 percent.

Christmas' Past on which at least one inch of snow fell

1890... 3.0"    1909... 3.5"   1935... 3.5"    1993... 1.9"

1892... 1.5"    1917... 2.0"   1950... 1.9"    1995... 1.4"

1902... 2.5"    1919... 2.0"   1970... 1.4"    2002... 1.8"



	MISCELLANEOUS SNOWFALL RECORDS

Longest Periods With at Least 1.0" of Snow on the Ground

64 days January 8 through March 12, 1978

62 days December 20, 1976 through February 20, 1977.



Back to Back Snowstorms (Within two weeks of each other)

1890   25.9" Dec 16-18      13.2"  Dec 25-27

2010   21.1" Feb  5-6        7.9"  Feb  9-10

1978   12.2" Jan 16-18      14.8"  Jan 19-21

1994   13.9" Jan  3-4        5.8"  Jan 17-18




                     LARGEST DAILY SNOWFALLS FOR EACH MONTH

        JANUARY                        FEBRUARY                        MARCH   
  
16.5"  January  8, 1884       11.4"  February  5, 2010        23.6"  March 13, 1993

12.4"  January  4, 1994       10.4"  February 20, 1947       16.3"  March  3, 1942

12.0"  January 22, 1966      10.4"  February 14, 1940       15.0"  March  5, 1902

11.2"  January  3, 1914       10.1"  February  3, 1961        9.7"  March 16, 1956

11.0"  January 13, 1964        9.7"  February  6, 2010        9.0"  March 11, 1924

                                          8.8"  February 16, 2003

                                          8.4"  February  1, 1881


        APRIL                              MAY                      SEPTEMBER

12.7"  April  3, 1901        3.1"  May  9, 1966         T  September 23,1989 

11.2"  April  8, 1902        1.8"  May  1, 1963         T  September 30,1893 

 5.4"  April  4, 1987        0.5"  May 25, 1925                      

 4.0"  April 10, 1918        0.2"  May 10, 1923

 3.9"  April 18, 1953


          OCTOBER                  NOVEMBER                  DECEMBER
6.6"  October 31, 1993    14.0"  November 24, 1950   22.0" December 17,1890

3.0"  October 24, 1917    12.5"  November  9, 1913   10.7" December 27,1894

2.2"  October 22, 1925    10.4"  November 28, 1958   10.7" December 11,1944

2.0"  October 30, 1925    10.1"  November 25, 1950   10.0" December 31,1897

1.8"  October 18, 1972     8.7"  November 17, 1980    8.5" December  1,1974

                                                                8.5" December 26,1890

MOST AND LEAST AMOUNTS OF SNOWFALL BY MONTH AND SEASON
                    

             SEPTEMBER
      Most...trace in 1893 and 1989.

               OCTOBER                        NOVEMBER  
        least          most            least            most
        0.0           8.5  1993       0.0  1946       32.3  1950
                      4.9  1925         T  (19 times  14.7  1913
                      3.0  1917       last in 2011)   13.9  1995
                      1.8  1972,1962                  11.0  1958
                      1.6  2011                       10.5  1971
                      1.5  1957                       10.1  1967
                      1.3  1992                        9.7  1980
                      0.7  2008                        8.3  1938
                      0.5  1952                        7.9  1951
                      0.4  1969                        7.9  1969
                      0.2  2001,1989,1988,1965         6.6  1976
                      0.1  1960                        6.5  1955
                                                
                                                

             DECEMBER                             SEASON
        least       most                 least              most
      0.0  1889   36.3  1890     1.    8.8  1918-1919   82.0  1950-1951  1.
        T  1994   26.0  1944     2.   11.4  1889-1890   78.5  1913-1914  2.
        T  1941   21.3  2003     3.   14.4  1920-1921   77.4  2009-2010  3.
        T  1931   21.2  1974     4.   14.7  1931-1932   76.8  1993-1994  4.
        T  1928   21.0  1950     5.   15.7  1932-1933   76.0  1960-1961  5.
      0.7  2006   20.8  1960     6.   16.6  1973-1974   74.5  1995-1996  6.
      0.7  1971   20.6  1969     7.   17.2  1990-1991   72.1  1992-1993  7.
      0.8  1949   20.4  1935     8.   18.7  1937-1938   70.7  1969-1970  8.
      0.9  1986   17.1  1945     9.   19.0  1930-1931   63.6  1935-1936  9.
      1.0  1923   16.4  1963    10.   19.9  1896-1897   62.6  1963-1964 10.
      1.1  1979   15.7  1914    11.   21.0  1887-1888   62.2  1977-1978 11.
      1.2  2011   15.3  1985    12.   21.1  1948-1949   62.2  1959-1960 12.
      1.2  1934                 13.   21.7  1988-1989   61.8  2002-2003 13.
      1.2  1920                 14.   22.1  1927-1928   59.9  1970-1971 14.
      1.3  1908                 15.   22.2  1897-1898   59.6  1966-1967 15.
      1.4  1918                 16.   22.3  1903-1904   58.7  1974-1975 16.
      1.4  1943                       22.3  1949-1950   56.7  2010-2011 17.
      1.6  1899                 18.   22.7  1899-1900   56.2  1901-1902 18.
      1.8  1998                 19.   23.4  1994-1995   54.2  2003-2004 19.
      1.8  1965                 20.   23.9  1953-1954   53.4  1962-1963 20.
      1.8  1927                       23.9  1934-1935   51.9  1971-1972 21.
      1.9  1953                                         51.4  1890-1891 22.
      2.0  1905                                         50.5  1967-1968 23.
      2.3  1938                                         50.3  1944-1945 24.
      2.3  1888
                                                               

               JANUARY                   FEBRUARY 
         least        most            least       most
        T  1890   40.2  1978       0.5  1909   48.7  2010
        T  1932   30.1  1994       1.1  1987   25.3  2003
      0.2  1950   26.5  1977       1.1  1953   24.2  1972
      0.3  1944   26.2  1925       1.2  1930   23.4  1914
      0.3  1933   24.6  1966       1.5  1949   23.1  1947
      0.7  1896   24.1  2011       1.5  1915   22.7  1940
      1.2  1928   23.4  1996       1.5  1932   22.5  1961
      1.3  1924   22.7  1961       1.7  1919   21.8  1960
      1.3  1916   22.3  1909       2.2  1888   21.7  1967
      1.7  1998   22.0  1885       2.2  1890   21.0  1927
      1.8  1894   21.8  1975       2.2  1974   20.7  2008
      2.1  1934   20.9  1935       2.2  1959   20.5  1893
      2.1  1993   20.8  2009       2.3  1918   20.4  1963
      2.2  1960   20.3  1963       2.3  1891
      2.4  1921                    2.4  1896
      2.5  1900                    2.4  1992
      2.9  1937                    2.5  1990
      2.9  1923                    2.5  1998



               MARCH                          APRIL
        least       most            least            most
        T  1927   34.1  1993       0.0  2008       13.5  1901
        T  1903   21.3  1960       0.0  1998       12.1  1902
      0.1  1946   20.1  1906       0.0  1969        8.1  1987
      0.2  2009   20.0  1967       0.0  1941        7.2  1985
      0.2  1985   19.1  1962       0.0  1884        7.1  1918
      0.4  1939   18.3  1942         T (26 times    7.0  1889
      0.4  1904   17.8  1924         last in 2010)  6.3  2005
      0.5  2010   17.0  1896                        5.9  1961
      0.5  1925   16.8  1971                        5.9  1911
      0.5  1918   16.7  1902                        5.7  1916
      0.6  1990   16.1  1971                        5.4  1886
      0.7  1910                                     5.2  1951
      0.8  1938
      0.9  1977
      1.1  2000
      1.1  1935                               MAY
      1.3  1945                       least          most         
      1.4  2006                       0.0            3.1  1966
      1.4  1961                                      1.8  1963
      1.4  1921                                      0.9  1923
      1.5  1919                                      0.5  1925
      1.8  1888                                      0.1  1908
      2.0  1979/1913/1886

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