



Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley
Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >
Hazardous Weather Conditions

Current conditions at
Spearfish / Clyde Ice (KSPF)
Lat: 44.48° N Lon: 103.78° W Elev: 3898 ft.
Fair
66°F
19°C
Humidity | 56% |
Wind Speed | SW 7 mph |
Barometer | 30.04 in |
Dewpoint | 50°F (10°C) |
Visibility | 10.00 mi |
Last update | 18 Aug 12:55 am MDT |
Detailed forecast for
Northern Black Hills
Overnight
Partly cloudy. Lows in the mid 50s. Southwest winds around 5 mph.
Monday
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Southwest winds around 5 mph, becoming north in the afternoon. Chance of rain 50 percent.
Monday Night
Clear. Lows in the mid 50s. South winds 5 to 10 mph.
Tuesday
Sunny. Highs in the lower 80s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.
Tuesday Night
Clear. Lows in the upper 50s. South winds 5 to 10 mph with gusts up to 20 mph.
Wednesday
Sunny. Highs in the mid 80s.
Wednesday Night
Clear. Lows in the lower 60s.
Thursday
Mostly sunny. Highs in the lower 80s.
Thursday Night
Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 50s. Chance of rain 50 percent.
Friday
Partly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 60 percent.
Friday Night
A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 50 percent.
Saturday
Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 40 percent.
Saturday Night
A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 30 percent.
Sunday
Mostly sunny with a slight chance of showers in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent.
Additional Forecasts and Information
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