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.

Mostly Cloudy

64°F

18°C

Humidity	73%
Wind Speed	NE 10 G 16 mph
Barometer	30.20 in
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	20 Jun 10:55 am MDT

More Information:

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

Extended Forecast for

4 Miles SSW Lead SD

Today
High: 64 °F
Isolated
T-storms
Tonight
Low: 48 °F
Chance
Showers and
Patchy Fog
Friday
High: 63 °F
Slight Chance
T-storms and
Patchy Fog
then Chance
T-storms
Friday Night
Low: 49 °F
Showers
Likely then
Chance
T-storms
Saturday
High: 73 °F
Chance
T-storms
Saturday Night
Low: 51 °F
Mostly Clear
Sunday
High: 80 °F
Sunny
Sunday Night
Low: 59 °F
Mostly Clear
Monday
High: 84 °F
Sunny

Detailed Forecast

Today

Isolated showers, with thunderstorms also possible after noon. Partly sunny, with a high near 64. East wind around 8 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.

Tonight

A 30 percent chance of showers and thunderstorms, mainly between 9pm and midnight. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 48. Southeast wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 15 mph.

Friday

A 50 percent chance of showers and thunderstorms, mainly after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 63. Southeast wind 3 to 7 mph. Winds could gust as high as 15 mph.

Friday Night

Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 49. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 70%.

Saturday

A 30 percent chance of showers and thunderstorms, mainly after noon. Sunny, with a high near 73. West wind 5 to 7 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

Saturday Night

Mostly clear, with a low around 51. North wind around 6 mph becoming light and variable in the evening. Winds could gust as high as 16 mph.

Sunday

Sunny, with a high near 80. Light and variable wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 22 mph.

Sunday Night

Mostly clear, with a low around 59. Southeast wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 21 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 78.