Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

82°F

28°C

Humidity	21%
Wind Speed	N 12 mph
Barometer	29.84 in
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	30 Jun 5:15 pm MDT

More Information:

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

Extended Forecast for

3 Miles WSW Lead SD

Tonight
Low: 51 °F
Partly Cloudy
then
Scattered
T-storms
Wednesday
High: 74 °F
Chance
T-storms
Wednesday Night
Low: 52 °F
Increasing
Clouds
Thursday
High: 78 °F
Chance
Showers then
T-storms
Likely
Thursday Night
Low: 51 °F
Partly Cloudy
Friday
High: 79 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 51 °F
Chance
T-storms
Independence Day
High: 76 °F
Mostly Sunny
then Chance
T-storms
Saturday Night
Low: 51 °F
Slight Chance
T-storms then
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms, mainly between midnight and 3am. Increasing clouds, with a low around 51. Light and variable wind. Winds could gust as high as 17 mph. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms before 9am, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Light and variable wind. Winds could gust as high as 15 mph. Chance of precipitation is 40%.

Wednesday Night

Increasing clouds, with a low around 52. Calm wind becoming south around 6 mph after midnight. Winds could gust as high as 18 mph.

Thursday

Showers and thunderstorms likely, mainly after noon. Mostly sunny, with a high near 78. South wind around 6 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

Thursday Night

Partly cloudy, with a low around 51. Southeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 17 mph.

Friday

A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 17 mph.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 51.

Independence Day

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.

Saturday Night

A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 51.

Sunday

A slight chance of showers and thunderstorms after noon. Sunny, with a high near 81.

Sunday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 56.

Monday

A chance of showers and thunderstorms. Mostly sunny, with a high near 82.