Very Warm September...Drought Improves East

September 2013 was a very warm month across the region with average temperatures ranging from 4 to 6 degrees above normal.  High temperatures for September were mainly in the 90s with 101 degrees at Pierre.  Low temperatures for the month were mainly in the middle 30s to the lower 40s with parts of northeast South Dakota falling into the lower 30s.  Both Aberdeen and Sisseton fell to 33 degrees on the morning of the 21st with areas of frost forming across the region.  Thus, the region has yet to have a widespread frost or freeze which typically occurs in the October. 

September was brought to above normal precipitation for much of the area as a large low pressure system moved across the region towards the end of the month.   Rainfall amounts ranged from nearly three-quarters of an inch to nearly two inches from this system which helped the drought situation east in the region.  With the lack of rainfall early in the month, much of Northeast South Dakota went from a moderate drought at the beginning of the month to severe drought by September  17th.   The drought conditions then improved with the rainfall that occurred at the end of the month.  North central South Dakota was also above normal with rainfall for September as Mobridge was nearly two inches above normal.  Pierre and Kennebec were slightly below normal for the month. 

 SEPTEMBER 2013

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature / Date

91 / 18th

93 / 6th

90 / 1st, 7th

91 / 7th

Coldest Temperature / Date

33 / 21st

33 / 21st

40 / 22nd

36 / 21st

Average High / Departure from Normal

77.4 / +5.3

77.6 / +5.4

75.8 / +4.7

77.6 / +7.0

Average Low / Departure from Normal

50.4 / +4.7

51.4 / +4.1

52.1 / +4.5

53.1 / +5.7

Monthly Average / Departure from Normal

63.9 / +5.0

64.5 / +4.8

63.9 / +4.6

65.4 / +6.4

Precipitation Data

       

Monthly Precipitation / Departure from Normal

2.44 / +0.25

2.64 / +0.10

3.67 / +0.58

3.12 / +0.48

Most Precipitation in 24 hours / Date

0.92 / 27-28th

1.56 / 27-28th

1.44 / 28th

1.79 / 27-28th

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature / Date

101 / 6th

96 / 18th,19th

97 / 6th

95 /  6th

Coldest Temperature / Date

38 / 21st

36 / 21st

41 / 21st

39 / 20th

Average High / Departure from Normal

82.2 / +5.7

84.5 / +5.3

79.1 / +5.2

78.5 / +3.5

Average Low / Departure from Normal

54.7 / +5.5

54.5 / +5.2

53.3 / +5.7

52.6 / +5.2

Monthly Average / Departure from Normal

68.4 / +5.5

69.5 / +5.2

66.2 / +5.5

65.6 / +4.4

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.16 / -0.71

1.35 / -0.42

3.37 / +1.83

2.92 / +1.48

Most Precipitation in 24 hours / Date

0.63 / 27-28th

0.90 / 28th

1.67 / 8-9th

1.60 / 8th



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