August 2011 Climate Information

August 2011 temperatures across central and northeast South Dakota as well as west central Minnesota were generally near to slightly above normal. Average temperatures were from just a few tenths below to a couple degrees above normal for August. Wheaton was the coolest location at 1.5 degrees below average. The warmest temperatures for the month were in central and north central South Dakota with highs in the lower 100s. 

The precipitation for August was above and below for several areas across the region. Aberdeen and Watertown dried out some through August with both locations around an inch and a half below normal.  As a result, the drought monitor was now showing an abnormally dry area extending across much of northeast South Dakota.  Sisseton was over an inch above normal for August as the northern part of Roberts County, especially in the New Effington area, received quite a bit of rainfall in August.  This heavy rain caused flash flooding in the New Effington area two separate times. The Missouri River continued to fall throughout the month across central and north central South Dakota as dam releases were lowered.  

 AUGUST 2011

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

97 / 1st

91 / 23rd

89 / 24th

94 / 1st

Coldest Temperature / Date

47 / 17th

51 / 25th

54 / 30th

49 / 25th

Average High / Departure from Normal

82.9 / +1.1

80.9 / +0.1

80.4 / -3.1

80.9 / +1.0

Average Low / Departure from Normal

58.7 / +2.5

58.8 / +1.4

59.3 / +0.2

58.1 / +0.9

Monthly Average / Departure from Normal

70.8 / +1.8

69.9 / +0.8

69.9 / -1.5

69.4 / +0.9

Precipitation Data

       

Monthly Precipitation / Departure from Normal

0.87 / -1.56

3.60 / +1.16

2.52 / -0.01

1.18 / -1.60

Most Precipitation in 24 hours / Date

0.24 / 19th

2.80 / 14-15th

0.65 / 17th

1.00 / 2nd

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature / Date

102 / 1st

103 / 1st,2nd

102 / 1st, 23rd

97 / 23rd

Coldest Temperature / Date

52 / 17th

49 / 17th

48 / 17th

51 / 10th

Average High / Departure from Normal

86.6 / -0.7

88.1 / -1.5

86.5 / +1.7

87.2 / +3.1

Average Low / Departure from Normal

60.1 / 0.0

60.2 / +0.3

58.4 / +0.5

57.9 / +0.2

Monthly Average / Departure from Normal

73.4 / -0.3

74.1 / -0.6

72.4 / +1.0

72.6 / +1.7

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.93 / +0.13

3.73 / +1.71

1.97 / -0.06

2.64 /  +0.75

Most Precipitation in 24 hours / Date

0.90 / 5-6th

1.90 / 11th

0.41 / 11-12th

1.07 / 6th

 



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