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Heap Lake, SD Weather Forecast

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Heap Lake, SD Weather Forecast

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Heap Lake SD weather - Overcast - 75°F
Overcast
75°F
Updated 9:08 pm
Feels Like 72°F
Humidity 60%
Wind SE 10 mph
Barometer  30.05 in
Dew Point 60°F
Heap Lake SD weather - Overcast - 24°C
Overcast
24°C
Updated 9:08 pm
Feels Like 22°C
Humidity 60%
Wind SE 16 km/h
Barometer  101.8 kPa
Dew Point 16°C
WX Settings

Heap Lake Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Heap Lake, SD Weather - Tonight Chance Of T-Storm Heap Lake, SD Weather - Friday Partly Sunny Heap Lake, SD Weather - Friday Night Chance Of T-Storm Heap Lake, SD Weather - Saturday Partly Sunny Heap Lake, SD Weather - Saturday Night Chance Of T-Storm Heap Lake, SD Weather - Sunday Partly Cloudy Heap Lake, SD Weather - Monday Partly Cloudy Heap Lake, SD Weather - Monday Night Mostly Cloudy Heap Lake, SD Weather - Tuesday Mostly Cloudy Heap Lake, SD Weather - Tuesday Night Chance Of T-Storm Heap Lake, SD Weather - Wednesday Partly Sunny Heap Lake, SD Weather - Wednesday Night Chance Of T-Storm
Chance of T-Storm Partly Sunny Chance of T-Storm Partly Sunny Chance of T-Storm Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Chance of T-Storm Partly Sunny Chance of T-Storm
Lo: 61°FLo: 16°C Hi: 91°FHi: 33°C
 Lo: 69°FLo: 21°C Hi: 91°FHi: 33°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C		 Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C		 Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C		 Hi: 89°FHi: 32°C
Lo: 65°FLo: 18°C		 Lo: 61°FLo: 16°C Hi: 90°FHi: 32°C
 Lo: 65°FLo: 18°C
POP: 20% POP: 40% POP: 20% POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 806 PM CDT Thu Aug 27 2026 Heap Lake, SD Weather - WeatherWorld.com

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Heap Lake Forecast Discussion

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Issued: 630 PM CDT Thu Aug 27 2026

Key Messages

  • Chances for rain return Friday, with the best chances coming Friday evening. A Marginal Risk (level 1 out of 5) for severe weather is in place. Hail of one inch in diameter and wind gusts of 60 to 70 miles per hour will be the main severe hazards.
  • Another Marginal Risk for severe weather is in place for storms developing Saturday evening. Hail of one inch in diameter and wind gusts of 60 miles per hour are the main severe threats.
  • Near normal temperatures are expected through the wee...