A Cold Yet Drier April

 

April continued the string of below normal temperature months for much of central and northeast South Dakota as well as west central Minnesota.  Monthly temperatures for April were from over 1 to over 5 degrees below normal for locations across the area.  The average April temperature for Watertown was around 1 degree below normal compared to over 5 degrees below normal for Wheaton.  As far as precipitation, the string of above normal precipitation months came to an end as the precipitation for April was below normal for most locations across the region.  If it were not for a couple precipitation events, April would have been far below normal for precipitation.  Much below normal precipitation for April would have helped dry things out across the region after a wet and cold winter.  The monthly precipitation amounts were generally from a quarter inch to as much as an inch below normal.  Pierre and Aberdeen were the closest to normal precipitation with only a few hundredths of an inch below normal.  Also, the cooler than normal April temperatures did not allow for much drying to occur across the region.

The month of April began with deep snow cover across the area from a late March storm along with cold temperatures.   A couple snow events occurred in April with monthly snowfall amounts ranging from 2 to 6 inches across most of the area.  Kennebec received nearly 11 inches of snowfall for the month of April.  The late March snow along with the additional April snow only added to the wet situation and ongoing flooding problems on the rivers and streams across much of the region.  In late April, a shower and thunderstorm event brought some large hail along with decent rainfall amounts  to mainly northeast  South Dakota and west central Minnesota.  Rainfall amounts ranged from a half inch to an inch and a quarter across this area.

 The coldest temperatures for the month occurred in the first few days with lows in the upper single digits to the mid teens.  Record or near record warmth occurred towards the end of the month as temperatures rose into the mid 80s to around 90 degrees on April 23rd.  On this day, Aberdeen, Pierre, and Mobridge broke their record highs while Wheaton tied its record high with a hot 91 degrees.  After this very warm day, much colder air pushed in and snow fell the very next day across the region with some locations receiving several inches. 

APRIL

       

Temperature Data

Aberdeen

Sisseton

Wheaton

Watertown

Warmest Temperature/Date

90 / 23rd

88 / 23rd

91 / 23rd

87 / 23rd

Coldest Temperature/Date

15 / 2nd

13 / 3rd

18 / 3rd

13 / 2nd

Average High/Departure from Normal

53.5 / -3.9

51.7 / -4.6

50.8 / -7.1

52.7 / -1.8

Average Low/Departure from Normal

32.1 / -1.3

30.9 / -2.7

30.6 / -3.6

30.7 / -0.7

Month Average/Departure from Normal

42.8 / -2.6

41.3 / -3.7

40.7 / -5.4

41.7 / -1.3

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.76 / -0.07

1.58 / -0.46

1.06 / -0.89

0.96 / -1.00

Monthly Snowfall / Departure from Normal

Trace / -2.7

Trace / -3.0

4.5 / +1.7

2.0 / +0.2

Most Precipitation in One Day/Date

1.26 / 29th

1.30 / 29th

0.54 / 29th

0.47 / 29th

Most Snow in One Day/Date

Trace / 24th

Trace / 24th

4.5 / 1st

1.0 / 4th

         

Temperature Data

Pierre

Kennebec

Mobridge

Timber Lake

Warmest Temperature/Date

88 / 23rd

90 / 23rd

89 / 23rd

85 / 23rd

Coldest Temperature/Date

14 / 1st

8 / 1st

15 / 2nd

10 / 1st

Average High/Departure from Normal

56.1 / -3.6

58.7 / -3.7

53.7 / -3.2

54.6 / -2.7

Average Low/Departure from Normal

32.7 / -2.0

32.1 / -1.9

31.7 / -1.4

30.5 / -2.3

Month Average/Departure from Normal

44.4 / -2.8

45.4 / -2.8

42.7 / -2.3

42.5 / -2.6

Precipitation Data

       

Monthly Precipitation / Departure from Normal

1.96 / -0.06

1.54 / -0.52

1.36 / -0.28

1.25 / -0.71

Monthly Snowfall / Departure from Normal

2.2 / -1.2

10.5 / +7.3

5.1 / +1.5

6.4 / +1.2

Most Precipitation in One Day/Date

0.61 / 4th

0.40 / 16th

0.35 / 26th

0.46 / 26th

Most Snow in One Day/Date

2.2 / 4th

4.5 / 4th

3.1 / 4th

6.2 / 4th

         



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