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Keystone, SD

95°F
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Keystone

South Dakota

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Keystone, SD Weather
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Winter Center
Today Hourly

Daily

 Radar MinuteCast Monthly Air Quality Health & Activities

July 14 - August 27

Mon 7/14

96° /62°
42%
Sunshine mixing with clouds with a thunderstorm in one or two spots this afternoon; storms can bring flash flooding, hail, damaging winds, and even a tornado

RealFeel®100°

RealFeel Shade™92°

Max UV Index10 (Very High)

WindSSE 10 mph

Tue 7/15

73° /52°
40%
Mostly cloudy with a strong thunderstorm in spots in the afternoon

RealFeel®76°

RealFeel Shade™70°

Max UV Index6 (High)

WindNNE 10 mph

Wed 7/16

55° /44°
91%
Cloudy and cooler with a couple of showers and a heavy thunderstorm; thunderstorms can bring hail and damaging winds

RealFeel®56°

RealFeel Shade™52°

Max UV Index3 (Moderate)

WindENE 8 mph

Thu 7/17

72° /54°
7%
Partly sunny and warmer

RealFeel®73°

RealFeel Shade™69°

Max UV Index10 (Very High)

WindS 9 mph

Fri 7/18

77° /55°
25%
Beautiful with partial sunshine

RealFeel®85°

RealFeel Shade™74°

Max UV Index9 (Very High)

WindNNE 7 mph

Sat 7/19

79° /54°
11%
Delightful with intervals of clouds and sunshine

RealFeel®81°

RealFeel Shade™76°

Max UV Index10 (Very High)

WindSSE 8 mph

Sun 7/20

83° /58°
25%
Sun and some clouds

RealFeel®90°

RealFeel Shade™81°

Max UV Index9 (Very High)

WindS 7 mph

Mon 7/21

87° /57°
40%
A thunderstorm in spots in the morning; otherwise, partly sunny

RealFeel®92°

RealFeel Shade™85°

Max UV Index9 (Very High)

WindNE 5 mph

Tue 7/22

88° /56°
40%
Variable cloudiness with a thunderstorm around in the afternoon

RealFeel®92°

RealFeel Shade™84°

Max UV Index10 (Very High)

WindN 5 mph

Wed 7/23

87° /57°
40%
Partly sunny with a strong thunderstorm in spots

RealFeel®93°

RealFeel Shade™87°

Max UV Index9 (Very High)

WindE 4 mph

Thu 7/24

86° /58°
40%
A thunderstorm around in the morning; otherwise, mostly cloudy

RealFeel®89°

RealFeel Shade™86°

Max UV Index5 (Moderate)

WindE 6 mph

Fri 7/25

90° /57°
1%
Mostly sunny and less humid

RealFeel®91°

RealFeel Shade™87°

Max UV Index10 (Very High)

WindS 7 mph

Sat 7/26

91° /58°
40%
Clouds and sunshine with a thunderstorm in parts of the area; very warm and humid

RealFeel®96°

RealFeel Shade™91°

Max UV Index9 (Very High)

WindSSW 4 mph

Sun 7/27

81° /53°
79%
Cloudy and not as warm with a couple of showers, then a steadier rain

RealFeel®79°

RealFeel Shade™79°

Max UV Index3 (Moderate)

WindNNE 5 mph

Mon 7/28

75° /50°
10%
Sunny

RealFeel®81°

RealFeel Shade™72°

Max UV Index9 (Very High)

WindW 6 mph

Tue 7/29

77° /50°
20%
Mostly sunny

RealFeel®85°

RealFeel Shade™75°

Max UV Index9 (Very High)

WindNE 1 mph

Wed 7/30

77° /54°
20%
Partly sunny

RealFeel®85°

RealFeel Shade™75°

Max UV Index9 (Very High)

WindS 1 mph

Thu 7/31

78° /58°
20%
Sun and some clouds

RealFeel®85°

RealFeel Shade™76°

Max UV Index8 (Very High)

WindWNW 5 mph

Fri 8/1

86° /59°
25%
Intervals of clouds and sunshine

RealFeel®86°

RealFeel Shade™84°

Max UV Index6 (High)

WindNE 4 mph

Sat 8/2

81° /58°
76%
Rain ending in the morning; cloudy

RealFeel®83°

RealFeel Shade™79°

Max UV Index3 (Moderate)

WindE 2 mph

Sun 8/3

77° /58°
74%
Cloudy; a passing morning shower followed by rain in the afternoon

RealFeel®77°

RealFeel Shade™75°

Max UV Index2 (Low)

WindSE 1 mph

Mon 8/4

75° /57°
25%
Clouds giving way to some sun

RealFeel®78°

RealFeel Shade™74°

Max UV Index3 (Moderate)

WindSSW 2 mph

Tue 8/5

78° /58°
20%
Mostly sunny

RealFeel®87°

RealFeel Shade™77°

Max UV Index9 (Very High)

WindWSW 2 mph

Wed 8/6

83° /58°
20%
Clouds to start, then sunshine returns

RealFeel®90°

RealFeel Shade™82°

Max UV Index9 (Very High)

WindNW 2 mph

Thu 8/7

85° /57°
20%
Mostly sunny

RealFeel®90°

RealFeel Shade™83°

Max UV Index9 (Very High)

WindSW 2 mph

Fri 8/8

85° /58°
20%
Increasing clouds

RealFeel®88°

RealFeel Shade™84°

Max UV Index9 (Very High)

WindWNW 6 mph

Sat 8/9

84° /57°
5%
Sunny

RealFeel®89°

RealFeel Shade™82°

Max UV Index9 (Very High)

WindNW 5 mph

Sun 8/10

85° /58°
58%
A passing shower in the morning; otherwise, intervals of clouds and sunshine

RealFeel®90°

RealFeel Shade™84°

Max UV Index9 (Very High)

WindWNW 2 mph

Mon 8/11

78° /57°
75%
Rain in the morning; otherwise, considerable cloudiness

RealFeel®80°

RealFeel Shade™75°

Max UV Index3 (Moderate)

WindW 4 mph

Tue 8/12

76° /51°
20%
Mostly sunny

RealFeel®84°

RealFeel Shade™74°

Max UV Index8 (Very High)

WindN 4 mph

Wed 8/13

75° /55°
25%
Mostly cloudy

RealFeel®76°

RealFeel Shade™74°

Max UV Index3 (Moderate)

WindSSE 6 mph

Thu 8/14

77° /51°
20%
Plenty of sunshine

RealFeel®81°

RealFeel Shade™74°

Max UV Index8 (Very High)

WindWNW 6 mph

Fri 8/15

76° /56°
5%
Plenty of sunshine

RealFeel®81°

RealFeel Shade™73°

Max UV Index8 (Very High)

WindSSE 5 mph

Sat 8/16

80° /57°
10%
Mostly sunny

RealFeel®87°

RealFeel Shade™79°

Max UV Index8 (Very High)

WindS 4 mph

Sun 8/17

84° /57°
5%
Sunshine

RealFeel®89°

RealFeel Shade™82°

Max UV Index8 (Very High)

WindW 6 mph

Mon 8/18

82° /56°
66%
Mostly cloudy with rain tapering off

RealFeel®85°

RealFeel Shade™80°

Max UV Index3 (Moderate)

WindNE 4 mph

Tue 8/19

77° /55°
60%
A little rain in the morning; otherwise, mostly cloudy

RealFeel®83°

RealFeel Shade™74°

Max UV Index8 (Very High)

WindWSW 4 mph

Wed 8/20

78° /57°
20%
Plenty of sun

RealFeel®83°

RealFeel Shade™76°

Max UV Index8 (Very High)

WindS 6 mph

Thu 8/21

85° /56°
10%
Mostly sunny and less humid

RealFeel®85°

RealFeel Shade™82°

Max UV Index8 (Very High)

WindNW 12 mph

Fri 8/22

77° /55°
20%
Sunny to partly cloudy

RealFeel®84°

RealFeel Shade™75°

Max UV Index7 (High)

WindENE 4 mph

Sat 8/23

77° /54°
20%
Times of clouds and sun

RealFeel®80°

RealFeel Shade™76°

Max UV Index4 (Moderate)

WindSE 4 mph

Sun 8/24

84° /55°
20%
Partly sunny and less humid

RealFeel®84°

RealFeel Shade™81°

Max UV Index7 (High)

WindNNW 9 mph

Mon 8/25

84° /50°
1%
Mostly sunny

RealFeel®82°

RealFeel Shade™80°

Max UV Index7 (High)

WindSW 14 mph

Tue 8/26

81° /49°
0%
Mostly sunny

RealFeel®82°

RealFeel Shade™78°

Max UV Index7 (High)

WindSW 7 mph

Wed 8/27

80° /53°
1%
Partly sunny

RealFeel®81°

RealFeel Shade™77°

Max UV Index7 (High)

WindWNW 6 mph

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World North America United States South Dakota Keystone

Weather Near Keystone:

  • Rapid City, SD
  • Sheridan, WY
  • Spearfish, SD
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