All Time December Record Snowfalls

 All-time record snowfalls for December occurred for several locations across northeast South Dakota and west central Minnesota. The total December snowfall amounts ranged from nearly 25 inches at Aberdeen to 33 inches at Sisseton.  Watertown received 29 inches of snowfall for December while Wheaton recorded 31.1 inches of snowfall. These December snowfall amounts were only 10 inches or less off of the seasonal snowfall normals for Sisseton, Wheaton, and Watertown.  In central South Dakota, Pierre and Kennebec had one of their top ten snowiest Decembers on record.  The total snow water equivalent precipitation across the region was also way above normal ranging from just around an inch up to 2 ½ inches. December 2010 was also a very cold month for the entire area with average monthly temperatures ranging from nearly 3 degrees up to 6 degrees below normal.

 

DECEMBER 2010

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

43 / 9th

39 / 9th

36 / 10th

37 / 9th

Coldest Temperature / Date

-10/ 19th

-15 / 26th

-13 / 13th

-11 / 12th

Average High / Departure from Normal

20.8 / -4.9

18.8 / -6.8

17.2 / -8.4

19.0 / -5.0

Average Low / Departure from Normal

5.1 / -1.2

2.7 / -4.8

4.2 / -3.1

3.8 / -1.8

Monthly Average / Departure from Normal

13.0 / -3.0

10.7 / -5.9

10.7 / -5.8

11.4 / -3.4

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.77 / +1.39

2.33 / +1.87

2.37 / +1.83

2.52 / +2.13

Monthly Snowfall / Departure from Normal

24.6 / +18.8

33.0 / +27.2

31.1 / +24.8

29.0 / +24.4

Most Precipitation in 24 hours / Date

0.38 / 23-24th

0.46 / 31st

0.85 / 31st

0.57 / 30th

Most Snow in 24 hours / Date

7.1 / 31st

 9.2 / 31st

8.0 / 31st

5.0 / 31st

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature / Date

51 / 9th

54 / 9th

44 / 9th

41 / 9th

Coldest Temperature / Date

-9 / 12th

-11 /12th

-14 / 12th

-12 / 12th

Average High / Departure from Normal

26.2 / -5.5

29.5 / -3.8

21.8 / -6.4

21.4 / -6.9

Average Low / Departure from Normal

9.5 / -2.6

9.7 / -1.1

5.6 / -3.5

6.0 / -3.0

Monthly Average / Departure from Normal

17.8 / -4.1

19.6 / -2.5

13.7 / -4.9

13.7 / -5.0

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.96 / +1.48

0.80 / +0.47

0.74 / +0.36

0.94 / +0.43

Monthly Snowfall / Departure from Normal

18.2 / +13.1

14.5 / +8.9

16.0 / +11.0

7.5 / +0.9

Most Precipitation in 24 hours / Date

.97 / 31st

0.25 / 31st

0.21 / 31st

0.33 / 20th

Most Snow in 24 hours / Date

9.5 / 31st

6.0 / 31st

4.2 /23rd

2.8 / 23rd

 



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