SELECTED QUICK REFERENCE CLIMATIC INFO FOR SIOUX FALLS AND SOUTH DAKOTA 

TEMPERATURES...   ....SIOUX FALLS....         ....SOUTH DAKOTA....
                             JUN 21 1988
RECORD HIGHEST    110F/ 43C  JUL 17 1936    120F GANN VALLEY  JUL 5 1936 
RECORD LOWEST     -42F/-41C  FEB  9 1899    -58F  MCINTOSH   FEB 17 1936 

WARMEST YEAR      50.6  1931                50.2  1931   STATE AVG 
COLDEST YEAR      40.9  1917                41.8  1917   STATE AVG

WARMEST MONTH     84.6  JUL 1936            87.4  JUL 1936  GANN VALLEY 
(ALSO WARMEST AVG HI 98.9 AND LOW 70.2)     84.3  JUL 1936  STATE AVG

COLDEST MONTH      0.5  FEB 1936           -11.0  FEB 1936  POLLOCK 
(COLDEST AVG HI   10.9  JAN 1979)           -3.6  FEB 1936  STATE AVG 
(COLDEST AVG LOW -10.9  FEB 1936)

WARMEST SUMMER    77.8  1936                77.6  1936   STATE AVG 
COLDEST SUMMER    63.8  1915
COLDEST WINTER     8.0  1978-79              8.6 1935-36 STATE AVG 
WARMEST WINTER    28.7  1930-31
<
PRECIPITATION...  ....SIOUX FALLS....         ....SOUTH DAKOTA....
                                                                (BLACK) 
WETTEST YEAR     36.11  1993               48.42  1946  DEADWOOD(HILLS) 
                                           44.66  1909  VERMILLION
                                           28.54  1915  STATE AVG

DRIEST YEAR      10.44  1894                2.89  1936  LUDLOW
                                           10.91  1936  STATE AVG

WETTEST MONTH     9.42  MAY 1898           18.61  MAY 1946  DEADWOOD
                                           16.12  JUN 1992  CLEAR LAKE

DRIEST MONTH      ZERO  NOV 1914             .02  OCT 1952  STATE AVG

WETTEST DAY       4.59  AUG  1 1975         8.74  MAY 5 2007  GROTON 
                                                              ..OFFICIAL 
                                           14.0   JUN  9 1972  NEMO
                                               ..BLACK HILLS..UNOFFICIAL 
SNOWFALL...
                                                               (BLACK) 
GREATEST SEASONAL 94.7  1968/69            364.7  1993/94  LEAD(HILLS)
                                           109.2  1968/69  CLEAR LAKE 
SNOWFALL...(CONT)  ....SIOUX FALLS....        ....SOUTH DAKOTA.... 
GREATEST 24 HR    26.0  FEB 17/18 1962      52.0  MAR 14 1973  LEAD

GREATEST STORM    32.2 FEB 16/17/18 1962   112.4  FEB 25-MAR 1,98 LEAD

GREATEST MONTH    48.4  FEB  1962           94.0  MAR 1950  DUMONT 2ENE
                                            50.0  FEB 1962  CANTON 
EARLIEST SNOWFALL...
SIGNIFICANT..      (24 HRS)                                (BLACK HILLS) 
(2.0+ INCHES)      2.7  OCT 1 1999           4.0  SEP  1 1974  DEERFIELD 
                                             5.0 SEP 12-13 1903 CAMP CROOK
MEASURABLE..       SEP 25 1939 (0.3 IN.)
(0.1-1.9 IN.)      SEP 28 1985 (0.9 IN.)

TRACE..            SEP 18 1929

LATEST SNOWFALL...                                         (BLACK HILLS) 
SIGNIFICANT..                                8.0  JUN 18 1973  DEERFIELD 
(2.0+ INCHES)      2.0  MAY 12 1943          2.0  JUN  2 1951  NEWELL

MEASURABLE..       MAY 18 1968 (0.1 IN.)

TRACE..            MAY 31 1954
                       ......SIOUX FALLS......
TEMPERATURES...
MONTH    RECORD HIGH       RECORD LOW      WARMEST MEAN   COLDEST MEAN 
JAN     66  24TH 1981    -38  12TH 1912     31.1  2006      1.8  1979 
FEB     70  22ND 1982    -42   9TH 1899     33.4  1931      0.5  1936
            23RD 1981
            23RD 1958
MAR     88  30TH 1943    -23  11TH 1948     49.2  1910     16.8  1899 
APR     98  28TH 1910      4   3RD 1936     55.9  1925     37.8  1950 
MAY    104  30TH 1934     17   4TH 1967     70.4  1934     51.1  1907 
JUN    110  21ST 1988     32   7TH 1901     76.3  1988     61.4  1969
                               7TH 1897
JUL    110  17TH 1936     34   9TH 1895     84.6  1936     65.5  1992 
AUG    109  24TH 1936     34  20TH 1950     78.8  1947     63.7  1915
                              29TH 1893
SEP    104   6TH 1976     13  29TH 1899     69.9  1908     51.5  1965
             6TH 1922
         4,5,6TH 1913
OCT     94   5TH 1963     -5  29TH 1925     58.8  1938     36.6  1908 
NOV     81   8TH 1999    -17  30TH 1964     43.6  2001     18.7  1896
                              14TH 1959
DEC     63 1,2,3 1998    -31  29TH 1917     31.6  1918      2.1  1983

PRECIPITATION...
MONTH     WETTEST           DRIEST               SNOWIEST

JAN      2.33  1922       T  1901,1900           22.2  1929
FEB      4.05  1962       T  1923,1894           48.4  1962
MAR      4.06  1995      .01  1930               31.5  1951
APR      6.97  2001      .02  1926               18.4  1983
MAY      9.42  1898      .10  1934                3.0  1944
JUN      8.43  1984      .36  1893                 0
JUL      9.11  1900      .25  1947                 0
AUG      9.33  1932      .36  1907                 0
SEP      9.26  1986       T  1892,1891            0.9  1985
OCT      6.89  1911       T  1952,1933           10.0  1991
NOV      4.76  2001     ZERO  1914               21.9  1985
DEC      2.97  1945       T 1986,1944,1905,1896  41.1  1968

MAXIMUM SNOW DEPTH EVER MEASURED  34 INCHES DEC 31 1968 AND FEB 28 1969 
HEAVIEST ANNUAL SNOWFALL  78.2 INCHES IN 1983
LIGHTEST ANNUAL SNOWFALL   9.5 INCHES IN 1901
LATEST FIRST MEASURABLE SNOW OF SEASON  JAN 8 1945  0.4 INCH (WWII) 
ATMOSPHERIC PRESSURE...HIGHEST OF RECORD 31.08 INCHES DEC 21 1989
                        LOWEST OF RECORD 28.63 INCHES MAR 26 1950

RSR 09/29/2009



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