Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Thunderstorm in Vicinity Rain

55°F

13°C

Humidity	100%
Wind Speed	E 9 G 15 mph
Barometer	30.15 in
Dewpoint	55°F (13°C)
Visibility	3.00 mi
Wind Chill	53°F (12°C)
Last update	16 Jul 12:35 am MDT

More Information:

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

Extended Forecast for

Lead SD

Overnight
Low: 50 °F
Showers and
Areas Fog
Wednesday
High: 53 °F
Showers and
Areas Fog
Wednesday Night
Low: 44 °F
Chance
Showers and
Areas Fog
Thursday
High: 73 °F
Mostly Sunny
Thursday Night
Low: 54 °F
Chance
T-storms then
Chance
Showers
Friday
High: 77 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 54 °F
Slight Chance
T-storms then
Chance
Showers
Saturday
High: 77 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 57 °F
Chance
T-storms then
Partly Cloudy

Detailed Forecast

Overnight

Showers and possibly a thunderstorm before 3am, then drizzle and possibly a thunderstorm after 3am. Areas of fog. Steady temperature around 50. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.

Wednesday

Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Areas of fog. High near 53. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.

Wednesday Night

A chance of showers and thunderstorms. Areas of fog before midnight. Otherwise, mostly cloudy, with a low around 44. East wind around 5 mph becoming south after midnight. Chance of precipitation is 30%.

Thursday

Mostly sunny, with a high near 73. South wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 54. Southeast wind around 5 mph becoming west after midnight. Winds could gust as high as 20 mph.

Friday

A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 77. West wind around 5 mph becoming northeast in the afternoon. Winds could gust as high as 15 mph.

Friday Night

A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.

Saturday

A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 77. Calm wind becoming east around 5 mph in the morning. Winds could gust as high as 20 mph.

Saturday Night

A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.

Sunday

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

Sunday Night

A slight chance of showers and thunderstorms. Mostly clear, with a low around 57.

Monday

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

Monday Night

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

Tuesday

A slight chance of showers and thunderstorms. Sunny, with a high near 82.