Lyon School, SD Weather Forecast

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Lyon School, SD Weather Forecast

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Lyon School SD weather  - Overcast - 56°F
Overcast
56°F
Updated 9:32 am
Feels Like 53°F
Humidity 100%
Wind N 0 mph
Barometer  30.3 in
Dew Point 56°F
Lyon School SD weather  - Overcast - 13°C
Overcast
13°C
Updated 9:32 am
Feels Like 12°C
Humidity 100%
Wind N 0 km/h
Barometer  102.6 kPa
Dew Point 13°C

Lyon School Weather Forecast

TODAY TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT
Lyon School, SD Weather - Today Mostly Cloudy Lyon School, SD Weather - Tonight Chance Of T-Storm Lyon School, SD Weather - Friday Chance Of T-Storm Lyon School, SD Weather - Friday Night Chance Of Showers Lyon School, SD Weather - Saturday Mostly Cloudy Lyon School, SD Weather - Saturday Night Chance Of Showers Lyon School, SD Weather - Sunday Showers Likely Lyon School, SD Weather - Sunday Night Chance Of Showers Lyon School, SD Weather - Monday Chance Of Showers Lyon School, SD Weather - Monday Night Mostly Cloudy Lyon School, SD Weather - Tuesday Mostly Cloudy Lyon School, SD Weather - Tuesday Night Chance Of Showers
Mostly Cloudy Chance of T-Storm Chance of T-Storm Chance of Showers Mostly Cloudy Chance of Showers Showers Likely Chance of Showers Chance of Showers Mostly Cloudy Mostly Cloudy Chance of Showers
Hi: 71°FHi: 22°C
Lo: 60°FLo: 16°C Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C Hi: 65°FHi: 18°C
Lo: 51°FLo: 11°C Hi: 61°FHi: 16°C
Lo: 50°FLo: 10°C Hi: 61°FHi: 16°C
Lo: 49°FLo: 9°C Hi: 69°FHi: 21°C
Lo: 51°FLo: 11°C
POP: 100% POP: 50% POP: 20% POP: 20% POP: 70% POP: 70% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 609 AM CDT Thu Sep 17 2026 Lyon School, SD Weather - WeatherWorld.com

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Issued: 638 AM CDT Thu Sep 17 2026

Key Messages

  • Pockets of drizzle will continue through mid-morning mainly east of I-29.
  • Patchy Fog will continue through late morning. Locally dense patches could lead to visibilities of 1/2 mile or less. Be prepared for rapidly changing visibility conditions.
  • Showers and thunderstorms will lift through the area starting tonight. While severe weather is not expected, locally heavy rainfall will be the main threat. Widespread accumulations of 1-2+ inches are expected along and north of I-90. Minor ...