Heat Wave Continues in the Northeastern Quarter of the U.S.; Excessive Rain May Bring Flooding in the North Central U.S.

The heat wave is expected to peak in the eastern Great Lakes and New England today, and the Ohio Valley and Mid-Atlantic Friday into the weekend. Widespread daily record high temperatures are likely. Heavy to excessive rainfall will be associated with thunderstorms forecast to move across parts of the northern Plains and Upper Midwest today into Friday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Breezy

66°F

19°C

Humidity	78%
Wind Speed	E 21 G 26 mph
Barometer	30.13 in
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	20 Jun 5:35 pm MDT

More Information:

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

Extended Forecast for

6 Miles WSW Lead SD

This Afternoon
High: 67 °F
Slight Chance
T-storms
Tonight
Low: 50 °F
Chance
T-storms and
Patchy Fog
Friday
High: 65 °F
Chance
T-storms and
Patchy Fog
Friday Night
Low: 50 °F
T-storms
Likely then
Slight Chance
T-storms
Saturday
High: 74 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 53 °F
Mostly Clear
Sunday
High: 84 °F
Sunny
Sunday Night
Low: 62 °F
Mostly Clear
Monday
High: 84 °F
Sunny

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 67. East wind around 5 mph.

Tonight

A chance of showers and thunderstorms before 4am, then a slight chance of showers. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 50. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

Friday

A 50 percent chance of showers and thunderstorms, mainly after 9am. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 65. Calm wind becoming east around 6 mph in the morning.

Friday Night

Showers and thunderstorms likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 50. Light and variable wind. Chance of precipitation is 70%.

Saturday

A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon. Winds could gust as high as 16 mph.

Saturday Night

Mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.

Sunday

Sunny, with a high near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.

Sunday Night

Mostly clear, with a low around 62. South wind around 6 mph becoming southwest after midnight. Winds could gust as high as 18 mph.

Monday

Sunny, with a high near 84.

Monday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 54.

Tuesday

A slight chance of showers and thunderstorms. Sunny, with a high near 77.