National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Brookings, Brookings Municipal Airport (KBKX)

Lat: 44.3°NLon: 96.82°WElev: 1647ft.

Fair

85°F

29°C

Humidity 39%
Wind Speed S 7 mph
Barometer 29.90 in (1012.3 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 25 May 1:56 pm CDT
Extended Forecast for

Sinai SD

  • Memorial Day

    Memorial Day: Sunny, with a high near 89. South southeast wind around 10 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after midnight. Increasing clouds, with a low around 61. South southeast wind around 10 mph.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 91. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Slight Chance
    T-storms then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. East southeast wind 10 to 15 mph.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

Memorial Day
Sunny, with a high near 89. South southeast wind around 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms after midnight. Increasing clouds, with a low around 61. South southeast wind around 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 91. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 59. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 89. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 58. East southeast wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 80.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Partly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sinai SD
 44.24°N 97.04°W (Elev. 1749 ft)
Last Update:
1:53 pm CDT May 25, 2026
Forecast Valid:
2pm CDT May 25, 2026-6pm CDT May 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation