2009 Climate Summary

 

The year of 2009 across central and north central South Dakota as well as west central Minnesota was dominated by northwest flow which brought cool to bitter cold air masses across the region from the Canada and the Arctic. Therefore, all locations across the area averaged from around 1 degree to 3.5 degrees below normal for 2009. The lowest temperature for the year occurred on January 15th with the lows across the region in the 20s to 30s below zero. Aberdeen recorded a low temperature of 42 degrees below zero on this date.  It is also interesting to note in the 2009 the absence of 100 degree temperatures across the area.  In fact, the highest temperatures for the year were in the mid to upper 90s for all locations.

The year of 2009 was not only cooler than normal but also wetter than normal across central and northeast South Dakota as well as west central Minnesota.  The yearly total precipitation amounts were anywhere from a half inch to over 4 inches above normal.  As a result, flooding was an issue especially across northeast South Dakota and west central Minnesota.  

 

 

CLIMATE SUMMARY 2009

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature/Date

96 / May 19th

96 / May 19th

94 / Aug 13th

94 / May 19th

Coldest Temperature/Date

-42 / Jan 15th

-31 / Jan 15th

-30 / Jan 15th

-34 / Jan 15th

Average Yearly High/Departure from Normal

52.3 / -2.8

51.3 / -3.1

50.2 / -4.8

50.9 / -2.0

Average Yearly Low/Departure from Normal

30.2 / -2.2

31.1 / -2.2

30.6 / -2.1

30.9 / -0.2

Yearly Average/Departure from Normal

41.3 / -2.5

41.2 / -2.7

40.4 / -3.5

40.9 / -1.1

Precipitation/Wind Data

       

Yearly Precipitation / Departure from Normal

24.27 / +4.05

26.18 / +4.10

24.32 / +1.52

24.67 / +2.73

Highest Wind Gust MPH / Date

55 / Jun 27th

59 / May 20th

N/A

54 / May 13th

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature/Date

97 / Aug 12th

98 / May 19th

93 / Jul 23rd

98 / Aug 12th

Coldest Temperature/Date

-24 / Jan 15th

-30 / Jan 15th

-33 / Jan 15th

-28 / Jan 15th

Average Yearly High/Departure from Normal

56.6 / -2.8

58.9 / -2.3

53.0 / -3.7

54.1 / -2.1

Average Yearly Low/Departure from Normal

33.6 /  -1.9

33.5 /  -0.1

31.2 / -1.8

31.1 / -2.2

Yearly Average/Departure from Normal

45.1 / -2.4

46.2 / -1.2

42.1 / -2.9

42.6 / -2.2

Precipitation/Wind Data

       

Yearly Precipitation / Departure from Normal

20.90 / +1.02

21.21 / +2.79

19.05 / +2.40

19.00 / +0.39

Highest Wind Gust MPH / Date

61 / Aug 3rd

N/A

55 / Jan 12th

N/A

 



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