National Weather Service - Aberdeen SD

Climate Extremes
for Aberdeen and South Dakota

Aberdeen period of record (Temperatures & Snowfall): 1893-Present
Aberdeen period of record (Precipitation): 1932-Present

	Aberdeen Record	South Dakota Record

Record High Temperature	115 - July 6 & July 9, 1936	120 at following locations (date) Gann Valley (July 5, 1936) Fort Pierre 17WSW & Usta 8 WNW (July 15, 2006)

Record Low Temperature	-46 - January 12, 1912 and February 8th, 1895	-58 (McIntosh) - February 17, 1936

Warmest Year (avg temp)	49.8 - 1931	50.2 (State Avg) - 1931

Coldest Year (avg temp)	38.6 - 1950	41.8 (State Avg) - 1917

Warmest Month (avg temp)	84.8 - July 1936	87.4 (Gann Valley) - July 1936

Coldest Month (avg temp)	-7.3 - February 1936	-11.0 (Pollock) - February 1936

Warmest Summer (avg temp)	77.2 - 1936	77.6 (State Avg) - 1936

Coolest Summer (avg temp)	62.8 - 1915	N/A

Warmest Winter (avg temp)	27.6 - 1930-31	N/A

Coldest Winter (avg temp)	2.2 - 1935-36	8.6 (State Avg) - 1935-36

Wettest Year	28.50 - 1998	48.42 (Deadwood) - 1946

Driest Year	7.88 - 1976	2.89 (Ludlow) - 1936

Wettest Month	12.23 - May 2007	18.61 (Deadwood) - May 1946

Driest Month	Trace - November 1999 (last observed)	0.02 (State Avg) - October 1952

Wettest 24-hour Period	7.75 - May 5-6, 2007	8.74 (Groton) - May 5-6, 2007 [Unofficial - 14.0 (Nemo) - June 9, 1972]

Greatest Seasonal Snowfall	109.8 - 1936-37	364.7 (Lead) - 1993-94

Greatest Monthly Snowfall	38.5 - February 1915	94.0 (Dumont 2 ENE) - March 1950

Greatest 24-hour Snowfall	N/A	52.0 (Lead) - March 14, 1973

Greatest Storm Snowfall	25.3 - November 22-26, 1993	112.4 (Lead) - Feb 25 - Mar 1, 1998

Earliest Measurable Snowfall	0.2 - September 21, 1995	N/A

Latest Measurable Snowfall	2.0 - May 12, 1943	N/A

Aberdeen Monthly Temperature Extremes and Means

	Record High	Record Low	Warmest Avg Temperature	Coldest Avg Temperature

January	60 - 1981, 44, 21	-46 - 1912	27.1 - 2006	-3.2 - 1937

February	70 - 1958	-46 - 1895	34.1 - 1954	-7.3 - 1936

March	86 - 1946	-32 - 1995	43.9 - 1910	15.1 - 1897

April	98 - 1992	-2 - 1975	53.4 - 1915	36.0 - 1950

May	110 - 1934	13 - 2005	69.0 - 1934	51.0 - 1954, 1924

June	112 - 1931	28 - 1901	79.0 - 1933	59.4 - 1951

July	115 - 1936	35 - 1915	84.8 - 1936	64.2 - 1992

August	112 - 1965	30 - 1893	78.2 - 1937	63.4 - 2004

September	107 - 1931	11 - 1939	68.3 - 1931	49.7 - 1965

October	96 - 1963	-6 - 1919	56.0 - 1947	35.5 - 1925

November	79 - 1904	-27 - 1964	40.7 - 1923	9.7 - 1896

December	69 - 1939	-39 - 1967	27.4 - 1959	-0.5 - 1983

Aberdeen Precipitation and Snowfall Extremes

	Wettest	Driest	Snowiest

January	2.23 - 1937	0.01 - 1961, 1940	26.2 - 1937

February	2.06 - 1952	Trace - 1932	38.5 - 1915

March	3.45 - 1977	0.04 - 1971	28.0 - 1893

April	7.88 - 1986	0.12 - 1981	24.4 - 1970

May	12.23 - 2007	0.28 - 1948	2.0 - 1943

June	8.88 - 1939	0.37 - 1974	0

July	7.71 - 1972	0.30 - 1975	0

August	6.62 - 1942	0.06 - 1947	0

September	5.32 - 1996	0.05 - 1979	0.6 - 1903

October	7.29 - 1998	Trace - 1964, 1952	16.0 - 1906

November	2.87 - 2000	Trace - 1999, 1980	32.8 - 1896

December	1.86 - 1935	Trace - 1986, 1943	24.1 - 1927

Other Interesting Weather Information for Aberdeen

The warmest and coldest months on record were recorded during the same year. February 1936 is the coldest month on record with an average temperature of -7.3 degrees while July 1936 is the warmest month on record with an average temperature of 84.8 degrees. The total difference between the two months is 92.1 degrees. During February 1936 the temperature stayed at or below zero for 18 straight days. The following is a list of highs and lows during that period:
Date	High	Low	Date	High	Low	Date	High	Low
Feb 3	7	-12	Feb 9	0	-22	Feb 15	-18	-32
Feb 4	-10	-19	Feb 10	-4	-21	Feb 16	-10	-40
Feb 5	-13	-32	Feb 11	-14	-23	Feb 17	-7	-26
Feb 6	-13	-26	Feb 12	-12	-21	Feb 18	-1	-14
Feb 7	-12	-21	Feb 13	-4	-17	Feb 19	-4	-27
Feb 8	-7	-21	Feb 14	-13	-30	Feb 20	5	-16
From July 4 to July 19, 1936 the temperature reached 100 degrees or higher. This 16-day stretch is the longest streak of consecutive 100 degree temperatures on record. During this period the temperature reached 110 degrees or higher 5 times with a maximum of 115 degrees. The average high temperature for the month was a sizzling 102.7 degrees. The following is a list of highs and lows during that period:
Date	High	Low	Date	High	Low	Date	High	Low
Jul 4	104	66	Jul 12	107	78	Jul 20	91	65
Jul 5	108	64	Jul 13	106	73	Jul 21	101	60
Jul 6	115	72	Jul 14	102	66	Jul 22	106	65
Jul 7	106	76	Jul 15	107	68	Jul 23	100	61
Jul 8	106	77	Jul 16	112	67	Jul 24	101	67
Jul 9	115	73	Jul 17	111	77	Jul 25	104	64
Jul 10	114	76	Jul 18	106	67	Jul 26	103	72
Jul 11	108	83	Jul 19	103	70
The maximum snow depth ever measured was 30 inches on January 10-13 & 16-18, 1997 The latest first measurable snowfall of the season was 1.2 inches on January 9, 1963 The strongest wind gust occurred during a severe thunderstorm on July 1, 1973. The wind was recorded at 58 MPH with a gust to 86 MPH The earliest 100 degree reading was 102 on May 1, 1959. The latest 100 degree reading was 103 on September 22, 1936 and 101 on September 22, 1922. The earliest below zero reading in the fall was -3 on October 26, 1919. The latest below zero reading in the spring was -2 on April 3, 1975 The most consecutive days with measurable precipitation was 10 days, which ran from July 30 - August 8, 1956 and April 29 - May 8, 1950 The longest period without measurable precipitation is 55 days, which ran from September 21 to Novemeber 17, 1952 (note: there is a reported 88-day stretch in 1900-1901, but with rainfall records before 1932 disregarded this is the longest) The highest calendar day precipitation was 7.62 inches on May 5, 2007.

National Weather Service Weather Forecast Office