Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73°NLon: 103.62°WElev: 5600ft.

Fair

48°F

9°C

Humidity	48%
Wind Speed	SW 6 mph
Barometer	29.80 in (1004.4 mb)
Dewpoint	29°F (-2°C)
Visibility	10.00 mi
Wind Chill	45°F (7°C)
Last update	13 Apr 6:53 am MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

6 Miles NNW Keystone SD

Red Flag Warning April 13, 07:21am until April 13, 09:00pm

Click here for hazard details and duration

Red Flag Warning

Red Flag Warning April 13, 07:21am until April 13, 09:00pm
NOW until 9:00pm Mon
Red Flag Warning
Today
High: 67 °F
Sunny then
Slight Chance
Showers
Tonight
Low: 37 °F
Partly Cloudy
Tuesday
High: 61 °F
Partly Sunny
then Chance
Showers
Tuesday Night
Low: 37 °F
Slight Chance
Showers then
Mostly Clear
Wednesday
High: 67 °F
Sunny then
Slight Chance
Showers
Wednesday Night
Low: 44 °F
Mostly Clear
Thursday
High: 70 °F
Mostly Sunny
then Chance
Showers
Thursday Night
Low: 27 °F
Rain/Snow

Detailed Forecast

Today

A slight chance of showers between noon and 4pm. Mostly sunny, with a high near 67. Southwest wind 5 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

Tonight

Partly cloudy, with a low around 37. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 29 mph.

Tuesday

A 30 percent chance of showers after noon. Partly sunny, with a high near 61. Calm wind becoming southeast around 6 mph in the afternoon. Winds could gust as high as 16 mph.

Tuesday Night

A 20 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Light and variable wind.

Wednesday

A 20 percent chance of showers after noon. Sunny, with a high near 67. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 44. Southwest wind 3 to 7 mph. Winds could gust as high as 22 mph.

Thursday

A 40 percent chance of showers after noon. Mostly sunny, with a high near 70. Southwest wind 7 to 11 mph, with gusts as high as 33 mph.

Thursday Night

Rain showers before 9pm, then rain and snow showers between 9pm and 3am, then snow showers likely after 3am. Mostly cloudy, with a low around 27. West wind around 11 mph becoming north in the evening. Winds could gust as high as 29 mph.

Friday

Snow showers likely. Mostly cloudy, with a high near 40.

Friday Night

A chance of snow showers before midnight. Mostly cloudy, with a low around 22.

Saturday

A slight chance of snow showers. Mostly sunny, with a high near 48.

Saturday Night

Partly cloudy, with a low around 27.

Sunday

Sunny, with a high near 64.