Summerset
South Dakota
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Life In Summerset

Life in Summerset


'Banana Belt' Weather

Decades ago, a Sioux Falls TV weatherman dubbed the Rushmore Region the "Banana Belt," because on many winter days when eastern South Dakota endured below-freezing temperatures, the Black Hills basked in 45-degree warmth. The name stuck, happily.
 
The Rushmore Region of South Dakota can best be described as high, dry and moderate. The region has less snow than Denver, warmer winters than Minneapolis and more sunshine than Miami.
 
 Location and geology combine to create a region that is protected from many of the winter weather systems originating in Canada and the Northwest. In addition, warm air brought in by downsloping Chinook winds can create surprisingly warm winter days.

Elevations in the Rushmore Region range from 3,022 feet above sea level in Belle Fourche to 5,318 feet in Custer. Harney Peak in Custer State Park is 7,244 feet, the highest point east of the Rocky Mountains.

Area Temperature 

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Avg. Temperature

22.3

26.7

34.1

45.1

55.2

64.8

72.2

70.6

60

48.7

34.8

24.2

46.6

Avg. Max Temperature

33.8

38.2

45.9

57.9

68.1

77.8

86.2

85.1

74.4

62.5

46.7

35.6

59.4

Avg. Min Temperature

10.7

15.2

22.2

32.2

42.3

51.7

58.2

56.1

45.5

34.9

22.8

12.7

33.7

Days with Max Temp of 90 F or Higher

0

0

0

< 0.5

0

3

11

12

4

< 0.5

0

0

30

Days with Min Temp Below Freezing

30

27

27

15

3

< 0.5

0

0

2

10

25

30

169

 Area Precipitation

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Precipitation (inches)

0.4

0.5

1

1.9

2.7

3.1

2

1.7

1.2

1.1

0.6

0.5

16.6

Days with Precipitation 0.01 inch or More

7

7

9

10

12

12

9

8

6

5

6

6

97

Monthly Snowfall (inches)

5.3

6.5

8.8

6.3

0.8

0.1

< 0.05

< 0.05

0.1

1.7

5.3

4.9

39.8

 Other Area Weather Indicators 

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Average Wind Speed

10.7

11.1

12.6

13.1

12.2

10.9

10.1

10.2

11

11.2

10.8

10.5

11.2

Clear Days

8

6

6

6

7

9

13

14

13

12

8

8

111

Partly Cloudy Days

8

8

9

10

11

11

13

12

9

8

8

8

115

Cloudy Days

15

14

15

15

13

10

5

5

8

11

14

14

139

Percent of Possible Sunshine

57

60

63

62

60

65

73

74

70

66

55

55

63

Avg. Relative Humidity

58

68

67.5

63

60.5

63

61.5

56.5

52.5

53

58

64.5

68.5

http://www.climate-zone.com/climate/united-states/south-dakota/rapid-city/

 

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