HARNEY PEAK, SD 57730 Weather Forecast & Current Conditions

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CUSTER, SD
Current Weather

10:53 PM MDT JUN 8, 2026
Clear
57°F
Feels Like: 56°F
Dewpoint: 48°F
Rel. Hum.: 72%
Visibility: 10 miles
Wind: ENE at 7 mph
Pressure: 30.02 inches
Last 72 hours

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HARNEY PEAK, SD 57730
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
OVERNIGHT
Partly cloudy. Lows in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 30 mph.
TUESDAY
Partly cloudy in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 80s. South winds 10 to 15 mph, increasing to southwest 15 to 25 mph in the afternoon. Gusts up to 35 mph. Chance of rain 20 percent.
TUESDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 50s. West winds 10 to 20 mph. Gusts up to 40 mph, decreasing to 30 mph after midnight. Chance of rain 20 percent.
WEDNESDAY
Mostly sunny and breezy. Highs in the lower 70s. West winds 15 to 25 mph with gusts up to 40 mph.
WEDNESDAY NIGHT
Partly cloudy. Lows in the upper 40s. Northwest winds 10 to 20 mph with gusts up to 40 mph.
THURSDAY
Partly cloudy in the morning, then clearing. Breezy with highs in the upper 60s.
THURSDAY NIGHT
Clear. Lows in the mid 40s.
FRIDAY
Sunny. Highs in the upper 70s.
FRIDAY NIGHT
Clear. Lows in the lower 50s.
SATURDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 30 percent.
SATURDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the upper 40s. Chance of rain 60 percent.
SUNDAY
Partly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 40 percent.
SUNDAY NIGHT
A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the mid 40s. Chance of rain 20 percent.

Visible Weather Satellite
HARNEY PEAK, SD 57730
Infrared Weather Satellite
HARNEY PEAK, SD 57730
NEXRAD Weather Radar
HARNEY PEAK, SD 57730

CUSTER, SD 3 hourly weather forecast

weather forecast created  7:00 PM CDT  6/ 8/2026
Tuesday
9 JUN 2026
HARNEY PEAK, SD 57730 weather forecast Day 1, 0 hours 12 AM 58° 57° Mostly Cloudy 1%

0% Thunder
( 6% severe)
ESE   6 67% 47°
Low 57° HARNEY PEAK, SD 57730 weather forecast Day 1, 3 hours 3 AM 58° 57° Partly Cloudy SSW   6 80% 52°
High 82° HARNEY PEAK, SD 57730 weather forecast Day 1, 6 hours 6 AM 58° 57° Partly Cloudy 0%

0% Thunder
( 2% severe)
SSW   7 87% 54°

Partly Cloudy



HARNEY PEAK, SD 57730 weather forecast Day 1, 9 hours 9 AM 70° 70° Partly Cloudy SSW   10 55% 53°
HARNEY PEAK, SD 57730 weather forecast Day 1, 12 hours 12 PM 79° 78° Partly Cloudy 4%

0% Thunder
( 14% severe)
SW   17 20% 35°
HARNEY PEAK, SD 57730 weather forecast Day 1, 15 hours 3 PM 79° 78° Mostly Cloudy SW   17 15% 28°
HARNEY PEAK, SD 57730 weather forecast Day 1, 18 hours 6 PM 77° 77° Mostly Cloudy 3%

0% Thunder
( 10% severe)
WSW   18 18% 30°
HARNEY PEAK, SD 57730 weather forecast Day 1, 21 hours 9 PM 69° 69° Partly Cloudy W   14 25% 32°
Wednesday
10 JUN 2026
HARNEY PEAK, SD 57730 weather forecast Day 2, 0 hours 12 AM 61° 60° Mostly Cloudy 3%

0% Thunder
( 12% severe)
W   9 38% 35°
Low 49° HARNEY PEAK, SD 57730 weather forecast Day 2, 3 hours 3 AM 55° 53° Mostly Cloudy WNW   8 53% 38°
High 68° HARNEY PEAK, SD 57730 weather forecast Day 2, 6 hours 6 AM 51° 48° Partly Cloudy 2%

0% Thunder
( 5% severe)
WNW   9 63% 39°

Partly Cloudy



HARNEY PEAK, SD 57730 weather forecast Day 2, 9 hours 9 AM 58° 55° Partly Cloudy W   13 42% 35°
HARNEY PEAK, SD 57730 weather forecast Day 2, 12 hours 12 PM 62° 60° Clear 4%

0% Thunder
( 17% severe)
W   16 28% 29°
HARNEY PEAK, SD 57730 weather forecast Day 2, 15 hours 3 PM 66° 66° Clear W   16 19% 23°
HARNEY PEAK, SD 57730 weather forecast Day 2, 18 hours 6 PM 65° 65° Partly Cloudy 17%
RAIN
<.01 in
0% Thunder
( 14% severe)
W   14 20% 23°
HARNEY PEAK, SD 57730 weather forecast Day 2, 21 hours 9 PM 55° 52° Partly Cloudy NNW   9 38% 30°

CUSTER, SD extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
Low 45° Low 41° Low 40° Low 45° Low 45°
High 64° High 57° High 70° High 71° High 60°
HARNEY PEAK, SD 57730 weather forecast Day 3 HARNEY PEAK, SD 57730 weather forecast Day 4 HARNEY PEAK, SD 57730 weather forecast Day 5 HARNEY PEAK, SD 57730 weather forecast Day 6 HARNEY PEAK, SD 57730 weather forecast Day 7
Partly Cloudy
26% Rain
Partly Cloudy
32% Rain
Partly Cloudy
15% Rain
Partly Cloudy
15% Rain
Overcast
48% Rain
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