Local Forecast

Sinai, SD Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Sinai, SD.

Active Alerts 1 active

Hour-by-Hour  Current Observation

Monday 5:15 PM CDTMonday 5:15 PM

°F °C
Regional Observations →
80°F

Clear

  • 89° / 66° High / Low
  • 85° Feels Like
  • 0% Chance of Rain

Wind

5 mph

NW

UV Index

7

High

Humidity

79%

Dew 73°F

Sun

5:44 AM · 9:09 PM

Rise · Set

Source: MADISON (KMDS). Slider scrubs the next 12 hours.

5-Day Outlook

Through Friday

Local Radar →

Today

89° 66°

Thunderstorms Likely

Overnight: Isolated T-storm

Detailed forecast

Today

A chance of showers and thunderstorms. Mostly cloudy. High near 88, with temperatures falling to around 81 in the afternoon. West southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.

Night

A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 65. East northeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.

Tuesday

95° 69°

Mostly Cloudy

Overnight: Thunderstorms Likely

Detailed forecast

Tuesday

Mostly sunny, with a high near 92. South southeast wind 10 to 25 mph, with gusts as high as 40 mph.

Night

A chance of showers and thunderstorms between 8pm and 1am, then showers and thunderstorms likely between 1am and 5am. Mostly cloudy, with a low around 69. South wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 60%.

Wednesday

84° 59°

Isolated T-storm

Overnight: Partly Cloudy

Detailed forecast

Wednesday

A slight chance of rain showers between 7am and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 84. Southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.

Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. West northwest wind 5 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.

Thursday

78° 55°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Thursday

A slight chance of rain showers before 1pm. Mostly sunny, with a high near 74.

Night

Mostly clear, with a low around 55.

Friday

82° 57°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Friday

Sunny, with a high near 81.

Night

Mostly clear, with a low around 55.

Sinai, SD Weather Analysis Tools