Spearfish, South Dakota Weather Conditions

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Current Conditions

  • 64°
  • Clear
  • Wind: Calm
  • Humidity: 68%
  • Visibility: 10.0 miles
  • Dew Point: 54°
  • Pressure: 29.90 in. 0

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Next 12 Hours

10  am
1  pm
4  pm
7  pm
10  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
68°
79°
82°
77°
59°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of a Thunderstorm
  • High: 82 °
  • Low: 55 °
  • Chance of T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 64 °
  • Low: 46 °
  • Chance of T-Storms
  • Monday
  • Chance of a Thunderstorm
  • High: 66 °
  • Low: 46 °
  • Chance of T-Storms
  • Tuesday
  • Partly Cloudy
  • High: 73 °
  • Low: 59 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 75 °
  • Low: 54 °
  • Partly Cloudy

Forecast for Spearfish, South Dakota

Updated: 10:00 AM CDT on August 30, 2014

  • Saturday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 82F. Winds from the SSE at 5 to 15 mph. Chance of rain 30%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 55F. Winds from the WSW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 64F. Winds from the NW at 5 to 15 mph. Chance of rain 50%.

  • Sunday Night

    Clear with a chance of a thunderstorm and a chance of rain in the evening, then partly cloudy. Low of 46F. Winds from the WNW at 5 to 15 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 66F. Winds from the WSW at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy in the evening, then clear. Low of 46F. Winds from the West at 5 to 15 mph shifting to the SSW after midnight.

  • Tuesday

    Partly cloudy in the morning, then clear. High of 73F. Winds from the WSW at 10 to 15 mph shifting to the NW in the afternoon.

  • Tuesday Night

    Partly cloudy. Low of 59F. Winds from the ENE at 5 to 10 mph shifting to the SSE after midnight.

  • Wednesday

    Partly cloudy in the morning, then clear. High of 75F. Winds from the SSW at 5 to 10 mph shifting to the NW in the afternoon.

  • Wednesday Night

    Clear. Low of 54F. Winds from the SE at 5 to 15 mph.

  • Thursday

    Partly cloudy. High of 68F. Winds from the West at 10 to 15 mph shifting to the North in the afternoon.

  • Thursday Night

    Mostly cloudy. Low of 52F. Winds from the East at 5 to 15 mph.

  • Friday

    Partly cloudy. High of 66F. Winds from the East at 5 to 15 mph.

  • Friday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 52F. Winds from the East at 5 to 15 mph. Chance of rain 60%.

  • Saturday

    Partly cloudy with a chance of rain. High of 64F. Winds from the East at 5 to 15 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy. Low of 50F. Winds from the ESE at 5 to 15 mph.

  • Sunday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 68F. Winds less than 5 mph. Chance of rain 50%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 52F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday

    Clear with a chance of a thunderstorm. High of 68F. Winds less than 5 mph. Chance of rain 40%.

  • Tuesday Night

    Clear. Low of 52F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 8:29 AM MDT

Temperature: 62.2 °F Dew Point: 55 °F Humidity: 77% Wind: WNW at 2.3 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 8:28 AM MDT

Temperature: 70.0 °F Dew Point: 48 °F Humidity: 46% Wind: East at 2.7 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Spearfish, SD

Updated: 8:25 AM MDT

Temperature: 66.0 °F Dew Point: 58 °F Humidity: 74% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: County Road 172, Sundance, WY

Updated: 8:20 AM MDT

Temperature: 68.2 °F Dew Point: 53 °F Humidity: 59% Wind: West at 5.0 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: HADS ANNIE CREEK NEAR LEAD 6SW SD US USGS, Lead, SD

Updated: 7:30 AM MDT

Temperature: 46 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 8:21 AM MDT

Temperature: 56.0 °F Dew Point: 56 °F Humidity: 99% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion for western South Dakota and northeastern Wyoming 
National Weather Service Rapid City South Dakota 
518 am MDT Sat Aug 30 2014 


Short term...today through Sunday night 
issued at 313 am MDT Sat Aug 30 2014 


A longwave trough is crossing the western Continental U.S....with upper ridging 
over the northern plains at this time. Surface high pressure remains in control 
over central Canada to the northern plains. High pressure will slide eastward 
today with strong return flow setting up over the High Plains. 
Breezy southeast winds will set up across the western South Dakota plains through the 
day. Upper flow will become more southwesterly as the upper trough 
approaches from the west...with a surface low strengthening over 
central/eastern Montana. A strong upper wave over Idaho into the Great Basin will 
move east/NE through the day bringing chances for storms later this 
afternoon into the evening. The day will start off quiet with mostly sunny 
skies...then precipitation developing west of the County Warning Area will being moving 
into NE Wyoming and far western South Dakota this afternoon. Strong cap will limit storm 
development to mainly in the late afternoon. Some storms are expected to 
develop over the Black Hills but think the northern Black Hills will have the 
better chance of precipitation given the better environment. Surface low 
will cross the northern County Warning Area into the evening as the strong wave crosses 
the region...with a cold front pushing through tonight. With 
increasing shear this evening over NE Wyoming/northwest South Dakota...some supercell 
development is expected especially over northwest South Dakota where MLCAPE is 
1000-1500 j/kg. Strong winds and large hail will be the main 
threats. Storms will end/push east of the County Warning Area later tonight as the 
upper wave continues toward the upper Midwest. 


A quick break in precipitation is expected late tonight...but the next 
chance of showers/storms will be Sunday morning as the main trough 
axis approaches. Precipitation will cross the County Warning Area through the day Sunday 
as an upper wave rounds the base of the trough. Have increased 
probability of precipitation during the daytime hours. Have dropped temperatures over NE Wyoming as 
cold air continues to filter in from the W/NW. Temperatures over NE Wyoming 
should be limited to the 60s...while western South Dakota reaches the 70s. 
Precipitation will end late Sunday or Sunday evening as the trough axis 
pushes east of the County Warning Area. 


&& 


Long term...Monday through Friday 
issued at 313 am MDT Sat Aug 30 2014 


Shortwave in cyclonic flow passes across the northern plains 
Monday. With steep middle level lapse rates...scattered rain showers/thunderstorms and rain 
expected. Upper trough digs into the Pacific northwest 
Tue/Wed...with Flat Ridge across the northern plains. This will 
bring dry weather and above average temperatures for middle week. 


&& 


Aviation...(for the 12z tafs through 12z Sunday morning) 
issued at 515 am MDT Sat Aug 30 2014 


For the 12z tafs through 12z Sunday morning 
issued at 313 am MDT Sat Aug 30 2014 


Patchy fog across portions of northwest into south central South 
Dakota will result in local LIFR visibility through middle morning. Otherwise 
VFR conditions expected through 18z. Scattered rain showers/thunderstorms and rain will 
develop across northeast Wyoming early this afternoon...with 
activity spreading east through this evening. IFR visibility with 
thunderstorms...along with potential for hail and strong winds. 


&& 


Unr watches/warnings/advisories... 
South Dakota...none. 
Wyoming...none. 
&& 


$$ 


Short term...13 
long term...7 
aviation...7a 



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