Weather Alert
Lake Thompson Weather Warning NWS WEATHER ALERT FOR THE LAKE THOMPSON, SD AREA - Issued: 344 AM CDT Mon Aug 17 2026 Lake Thompson Weather Warning

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Lake Thompson, SD Weather Forecast

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Lake Thompson, SD Weather Forecast

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Lake Thompson SD weather - Mostly Cloudy - 57°F
Mostly Cloudy
57°F
Updated 3:45 am
Feels Like 51°F
Humidity 100%
Wind N 0 mph
Barometer  30.12 in
Dew Point 57°F
Lake Thompson SD weather - Mostly Cloudy - 14°C
Mostly Cloudy
14°C
Updated 3:45 am
Feels Like 11°C
Humidity 100%
Wind N 0 km/h
Barometer  101.9 kPa
Dew Point 14°C
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Lake Thompson Weather Forecast

REST OF TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY
Lake Thompson, SD Weather - Rest Of Tonight Mostly Clear Lake Thompson, SD Weather - Monday Mostly Sunny Lake Thompson, SD Weather - Monday Night Chance Of T-Storm Lake Thompson, SD Weather - Tuesday Chance Of T-Storm Lake Thompson, SD Weather - Tuesday Night Chance Of T-Storm Lake Thompson, SD Weather - Wednesday Chance Of T-Storm Lake Thompson, SD Weather - Wednesday Night Partly Cloudy Lake Thompson, SD Weather - Thursday Mostly Sunny Lake Thompson, SD Weather - Thursday Night Mostly Clear Lake Thompson, SD Weather - Friday Sunny Lake Thompson, SD Weather - Friday Night Mostly Clear Lake Thompson, SD Weather - Saturday Sunny
Mostly Clear Mostly Sunny Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm Partly Cloudy Mostly Sunny Mostly Clear Sunny Mostly Clear Sunny
Lo: 60°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 79°FHi: 26°C
 Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
 Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
POP: 50% POP: 50% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 133 AM CDT Mon Aug 17 2026 Lake Thompson, SD Weather - WeatherWorld.com

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Lake Thompson Forecast Discussion

Issued: 330 AM CDT Mon Aug 17 2026

Key Messages

  • Isolated showers and non-severe storms across the Missouri River Valley drift eastward through late morning.
  • Patchy fog with visibility briefly below two miles east of I-29 lifts through the mid morning.
  • Today`s storm potential remains the focus of the forecast. While exact storm coverage remains uncertain, isolated to scattered severe storms are possible after 4pm, with greatest risk after 7pm. Main hazards produce 65 mph winds and two inch hail. Tornad...