Joe's Corner

20th century climate for
Sioux Falls South Dakota

by Joe Sheehan
National Weather Service
Sioux Falls, SD


The following data is for Sioux Falls South Dakota using official records dating back to 1893.

The idea for this project began in the late 1990s when I realized the summer’s of the 1990’s had fewer than the average number of days with temperatures of 90 degrees or above. For example, 1992 had only two days of 90 degree heat and one of those occurred in April. It turned out that the decade of the 1990s had the fewest number of days with 90 and 100 degree heat of any decade in the 20th century. The original intent of my research was to determine the number of days with 90, 100, 0 and -10 degree temperatures for each decade. However, it evolved into the following article which examines total precipitation and average temperature.

For the purposes of this article the spring months are determined to be March, April and May, summer - June, July and August, autumn - September, October and November, and Winter - December, January and February.

During the early 1900’s a couple of months data was missing. To determine the average annual temperature I determined the missing month to be normal and then added the remaining 11 months before dividing by twelve.

Average Temperature by Decade - see table below for details

 

AVERAGE DECADE TEMPERATURE

AVERAGE DECADE SUMMER TEMPERATURE

AVERAGE DECADE WINTER TEMPERATURE

1900-1909

45.5 DEGREES

69.8 DEGREES

17.7 DEGREES

1910-1919

45.1 DEGREES

70.4 DEGREES

16.4 DEGREES

1920-1929

47.0 DEGREES

70.9 DEGREES

20.1 DEGREES

1930-1939

47.9 DEGREES

73.6 DEGREES

20.2 DEGREES

1940-1949

46.2 DEGREES

70.8 DEGREES

19.7 DEGREES

1950-1959

45.4 DEGREES

71.4 DEGREES

18.1 DEGREES

1960-1969

45.2 DEGREES

70.8 DEGREES

17.3 DEGREES

1970-1979

45.0 DEGREES

71.6 DEGREES

15.2 DEGREES

1980-1989

46.3 DEGREES

71.8 DEGREES

19.4 DEGREES

1990-1999

45.9 DEGREES

70.4 DEGREES

19.9 DEGREES


 

NUMBER OF DAYS WITH:

 

90 DEGREES
OR WARMER

100 DEGREES
OR WARMER

0 DEGREES
OR COLDER

-10 DEGREES
OR COLDER

1900-1909

206 +

9 +

285 ++

127 ++

1910-1919

261

12

355

175

1920-1929

192

8

232

89

1930-1939

358

58

222

102

1940-1949

223

22

251

75

1950-1959

263

13

311

128

1960-1969

228

10

369

145

1970-1979

268

31

357

185

1980-1989

248

23

283

118

1990-1999

152

6

253

93

+ MISSING JUNE 1907 DATA
++ MISSING MARCH 1901 DATA


Total Precipitation by Decade - see table below for details

 

 

PRECIPITATION FOR DECADE

HIGHEST TEMPERATURE FOR DECADE

LOWEST TEMPERATURE FOR DECADE

1900-1909

286.63 INCHES

102 JULY 20 1901

-37 FEBRUARY 2 1905

1910-1919

254.25 INCHES

105 JUNE 25 1911

-38 JANUARY 12 1912

1920-1929

258.63 INCHES

106 JULY 19 1926

-29 JANUARY 5 1924

1930-1939

254.42 INCHES

110 JULY 17 1936

-30 FEBRUARY 16 1936

1940-1949

256.50 INCHES

108 JULY 29 1947

-27 FEBRUARY 8 1948

1950-1959

239.86 INCHES

103 AUGUST 25 1955

-26 FEBRUARY 16 1958

1960-1969

240.17 INCHES

106 JULY 10 1966

-31 FEBRUARY 28 1962

1970-1979

247.23 INCHES

108 AUGUST 26 1973

-36 JANUARY 19 1970

1980-1989

232.85 INCHES

110 JUNE 21 1988

-29 FEBRUARY 11 1988

1990-1999

261.64 INCHES

107 JULY 12 1995

-29 FEBRUARY 2 1996

Top Fives

 

WARMEST YEARS
  1. 50.6 DEGREES IN 1931
  2. 50.5 DEGREES IN 1921
  3. 50.2 DEGREES IN 1938
  4. 49.9 DEGREES IN 1987
  5. 49.5 DEGREES IN 1939
COOLEST YEARS
  1. 40.9 DEGREES IN 1917
  2. 42.2 DEGREES IN 1950,51,96
  3. 42.7 DEGREES IN 1916,72,78
  4. 43.2 DEGREES IN 1979
  5. 43.5 DEGREES IN 1903,65
WARMEST SUMMERS
  1. 77.8 DEGREES IN 1936
  2. 76.2 DEGREES IN 1988
  3. 74.5 DEGREES IN 1938,55,76
  4. 74.4 DEGREES IN 1921,37
  5. 74.2 DEGREES IN 1959
COOLEST SUMMERS
  1. 63.8 DEGREES IN 1915
  2. 66.2 DEGREES IN 1992
  3. 67.1 DEGREES IN 1903
  4. 67.3 DEGREES IN 1950,85
  5. 67.4 DEGREES IN 1951
COOLEST WINTERS
  1. 8.0 DEGREES IN 1978-79
  2. 8.9 DEGREES IN 1977-78
  3. 9.3 DEGREES IN 1916-17
  4. 9.4 DEGREES IN 1935-36,17-18
  5. 11.1 DEGREES IN 1903-04
WARMEST WINTERS
  1. 28.7 DEGREES IN 1930-31
  2. 27.5 DEGREES IN 1991-92
  3. 27.3 DEGREES IN 1986-87
  4. 26.1 DEGREES IN 1918-19
  5. 26.0 DEGREES IN 1920-21
WETTEST YEARS
  1. 36.11 INCHES IN 1993
  2. 36.02 INCHES IN 1909
  3. 35.53 INCHES IN 1905
  4. 34.57 INCHES IN 1911
  5. 34.09 INCHES IN 1929
DRIEST YEARS
  1. 11.42 INCHES IN 1976
  2. 13.82 INCHES IN 1980
  3. 15.33 INCHES IN 1958
  4. 15.79 INCHES IN 1989
  5. 16.40 INCHES IN 1967
MOST 90 DEGREE OR WARMER DAYS
  1. 61 DAYS IN 1936
  2. 55 DAYS IN 1976
  3. 46 DAYS IN 1955
  4. 43 DAYS IN 1988
  5. 41 DAYS IN 1937
LEAST 90 DEGREE OR WARMER DAYS
  1. 1 DAY IN 1915
  2. 2 DAYS IN 1903,92
  3. 5 DAYS IN 1951
  4. 6 DAYS IN 1924,44,45
  5. 8 DAYS IN 1902,79,93,96,97
MOST 100 DEGREE OR WARMER DAYS
  1. 21 DAYS IN 1936
  2. 14 DAYS IN 1988
  3. 10 DAYS IN 1934
  4. 8 DAYS IN 1974
  5. 7 DAYS IN 1930,31,41,47
 
MOST 0 DEGREE OR COLDER DAYS
  1. 54 DAYS IN 1916-17,78-79
  2. 53 DAYS IN 1917-18,55-56
  3. 52 DAYS IN 1964-65,77-78
  4. 50 DAYS IN 1903-04
  5. 49 DAYS IN 1935-36
LEAST 0 DEGREE OR COLDER DAYS
  1. 2 DAYS IN 1930-31
  2. 8 DAYS IN 1920-21
  3. 9 DAYS IN 1986-87
  4. 11 DAYS IN 1982-83,91-92,97-98
  5. 12 DAYS IN 1943-44
MOST -10 DEGREE OR COLDER DAYS
  1. 34 DAYS IN 1917-18,78-79
  2. 33 DAYS IN 1935-36
  3. 30 DAYS IN 1977-78
  4. 27 DAYS IN 1903-04,11-12,16-17
  5. 23 DAYS IN 1904-05
LEAST -10 DEGREE OR COLDER DAYS
  1. 0 DAYS IN 1930-31,44-45,82-83
  2. 1 DAY IN 1940-41,91-92
  3. 2 DAYS IN 1907-08,20-21,86-87,94-95
  4. 3 DAYS IN 1952-53,57-58,97-98
  5. 4 DAYS IN 1931-32,43-44,74-75

Take a look at more detailed data - broken down per decade:


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