2011 Climate Information

 The year of 2011 started out wet across all of the region with much above normal snowfall  with  subsequent melting and widespread flooding. The wet conditions and flooding continued into summer.  The area started to dry out around August with the dry conditions remaining through the fall and through December.  Drought conditions developed and worsened across much of northeast South Dakota from the late summer and through the fall. The yearly precipitation data shows this as Watertown, Wheaton, and Sisseton all finished out the year with below normal precipitation.  Locations from the James Valley and west to the Missouri River finished out the year with above normal precipitation.  Pierre was nearly 6 inches above normal for the year. The biggest story of the year was the historic flooding on the Missouri River across South Dakota and especially in the Pierre area.  The other story was the late July heat wave experienced across the region. The high humidity and hot temperatures brought some record heat index readings to the region of 115 to 125 degrees.  The fall across northeast South Dakota and west central Minnesota was one of the top driest falls on record.  The winter has also begun dry across much of the region with brown conditions along with much above normal temperatures for December.

2011 CLIMATE  

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature/Date

100/ July 19th

97 /Jul 19th, Jun 30th

96 / July 1st, 20th

96 / Jul 19th

Coldest Temperature/Date

-29 / Feb 2nd

-24 / Jan 21st

-23 / Jan 21st

-29 / Feb 8th  

Average Yearly High/Departure from Normal

54.1 / -0.5

53.3 / -1.2

52.5 / -2.5

52.4 / -1.2

Average Yearly Low/Departure from Normal

31.6 / +0.1

33.2 / +0.2

32.6 / -0.9

31.9 / -0.6

Yearly Average/Departure from Normal

42.8 / -0.2

43.2 / -0.5

42.6 / -1.7

42.2 / -0.8

Precipitation/Wind Data

       

Yearly Precipitation / Departure from Normal

23.31 / +1.59

21.41 / -0.92

24.73 / -0.60

20.03 / -1.82

Highest Wind Gust MPH / Date

59 / Mar 11th

59 / May 31st

N/A

56/ Mar 11th

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature/Date

102 / Aug 1st

105 / July 19th

102 /Aug 23rd

102 / Jul 19th

Coldest Temperature/Date

-17 / Feb  25th

-20 / Jan 19th

-27 / Feb 2nd

-24 / Feb 2nd

Average Yearly High/Departure from Normal

56.9 / -2.3

59.8 / -1.9

54.8 / -2.0

55.3 / -1.3

Average Yearly Low/Departure from Normal

34.0 /  -1.6

34.0 / -1.3

31.9 / -1.2

32.7 / -0.9

Yearly Average/Departure from Normal

45.5 / -1.9

46.9 / -1.6

43.3 / -1.6

44.0 / -1.1

Precipitation/Wind Data

       

Yearly Precipitation / Departure from Normal

25.90 / +5.97

21.34 / +1.86

19.08 / +1.21

21.76 / +3.37

Highest Wind Gust MPH / Date

66 / Sep 20th

N/A

59 / Sep 20th  

N/A

 



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