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
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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 63.4 1902
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
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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 5/12/2009
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