Air Quality Concerns; Fire Weather; Extreme Heat; Severe Thunderstorms and Flash Flooding

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Dangerous heat and fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and flash flooding possible for the Southeast through today. Strong to severe thunderstorms for the Southern Plains with severe wind gusts and large hail possible. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Custer, Custer County Airport (KCUT)

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

Fair

53°F

12°C

Humidity	86%
Wind Speed	NW 3 mph
Barometer	30.20 in (1017.1 mb)
Dewpoint	49°F (9°C)
Visibility	10.00 mi
Last update	4 Aug 6:53 am MDT

More Information:

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

Extended Forecast for

Keystone SD

Today
High: 83 °F
Severe
Thunderstorms
Tonight
Low: 62 °F
Severe
Thunderstorms
then Partly
Cloudy
Tuesday
High: 87 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 65 °F
Mostly Clear
Thursday
High: 92 °F
Sunny
Thursday Night
Low: 63 °F
Partly Cloudy
Friday
High: 83 °F
Mostly Sunny
then Slight
Chance
T-storms

Detailed Forecast

Today

Isolated showers and thunderstorms before 9am, then scattered showers and thunderstorms after 3pm. Some of the storms could be severe. Mostly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Tonight

Isolated showers and thunderstorms before 9pm. Some of the storms could be severe. Partly cloudy, with a low around 62. East wind around 5 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

Tuesday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. South wind around 5 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 61. North wind around 5 mph, with gusts as high as 15 mph.

Wednesday

Sunny, with a high near 85. Northwest wind around 5 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 65. Southeast wind around 5 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 92. Southwest wind around 5 mph, with gusts as high as 20 mph.

Thursday Night

Partly cloudy, with a low around 63. Northwest wind around 5 mph, with gusts as high as 15 mph.

Friday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.