Spearfish, South Dakota Weather Conditions

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Current Conditions

  • 59°
  • Clear
  • Wind: SSW 9 mph
  • Humidity: 77%
  • Visibility: 10.0 miles
  • Dew Point: 52°
  • Pressure: 30.24 in. -

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Next 12 Hours

1  am
4  am
7  am
10  am
1  pm
Clear
Clear
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
59°
55°
59°
70°
77°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 81 °
  • Low: 55 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 82 °
  • Low: 61 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 86 °
  • Low: 63 °
  • Clear
  • Saturday
  • Clear
  • High: 84 °
  • Low: 59 °
  • Clear
  • Sunday
  • Partly Cloudy
  • High: 84 °
  • Low: 55 °
  • Partly Cloudy

Forecast for Spearfish, South Dakota

Updated: 10:00 PM CDT on July 29, 2014

  • Tuesday

    Mostly cloudy in the morning, then overcast with thunderstorms and rain showers. High of 81F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy with thunderstorms and rain showers in the evening, then clear. Low of 54F. Winds from the SSE at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 81F. Winds from the WNW at 5 to 10 mph shifting to the North in the afternoon.

  • Wednesday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Thursday

    Partly cloudy in the morning, then clear. High of 82F. Winds from the West at 5 to 10 mph shifting to the NNE in the afternoon.

  • Thursday Night

    Clear. Low of 61F. Winds from the ENE at 5 to 10 mph shifting to the SSE after midnight.

  • Friday

    Clear. High of 86F. Winds from the SSE at 5 to 10 mph shifting to the East in the afternoon.

  • Friday Night

    Clear in the evening, then mostly cloudy. Low of 63F. Winds from the SSE at 5 to 10 mph.

  • Saturday

    Clear. High of 84F. Winds from the South at 5 to 10 mph shifting to the ESE in the afternoon.

  • Saturday Night

    Clear. Low of 59F. Winds from the SSE at 10 to 15 mph.

  • Sunday

    Clear. High of 84F. Winds from the South at 5 to 15 mph.

  • Sunday Night

    Partly cloudy. Low of 55F. Winds from the South at 10 to 15 mph.

  • Monday

    Mostly cloudy with a chance of a thunderstorm. High of 79F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Low of 59F. Winds from the South at 10 to 15 mph. Chance of rain 50%.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm. High of 77F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds from the WNW at 5 to 10 mph. Chance of rain 50%.

  • Wednesday

    Clear. High of 75F. Winds from the WNW at 5 to 15 mph.

  • Wednesday Night

    Clear with a chance of rain. Low of 55F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Partly cloudy. High of 75F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Friday

    Clear. High of 77F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 55F. Winds less than 5 mph.

  • Saturday

    Clear. High of 81F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 55F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 11:00 PM MDT

Temperature: 66.2 °F Dew Point: 56 °F Humidity: 70% Wind: SSW at 9.2 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 10:58 PM MDT

Temperature: 65.3 °F Dew Point: 54 °F Humidity: 66% Wind: West at 5.8 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Spearfish, SD

Updated: 10:55 PM MDT

Temperature: 63.9 °F Dew Point: 55 °F Humidity: 73% Wind: WSW at 4.5 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: County Road 172, Sundance, WY

Updated: 10:49 PM MDT

Temperature: 59.9 °F Dew Point: 56 °F Humidity: 88% Wind: SW at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 9:30 PM MDT

Temperature: 54 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 10:58 PM MDT

Temperature: 45.7 °F Dew Point: 45 °F Humidity: 96% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 46 °F 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 
1013 PM MDT Tuesday Jul 29 2014 


Update... 
issued at 631 PM MDT Tuesday Jul 29 2014 


Latest radar/visible loops showed isolated -tsra dropping into 
central South Dakota ahead of a weak shortwave seen on water vapour over 
central ND. Region also under the tail end of 70kt jet streak. 
Forecast updated to bring low probability of precipitation for those areas. Should not 
make it too far into County Warning Area given 00z kunr sounding. 


&& 


Short term...this evening through Wednesday night 
issued at 209 PM MDT Tuesday Jul 29 2014 


Western noam ridge and Great Lakes trough will remain in place 
through the period. Long fetch southerly flow on the west side of 
the ridge will continue to support monsoon flow with middle-high 
level moisture and embedded impulses rotating around the ridge 
periphery. One such impulse is in the process of slowly exiting 
the far SW forecast area...with rain showers chances waning through evening. 
Meanwhile...compact weak vorticity lobes are evident on the western 
edge of the eastern noam trough...one currently supporting scattered 
rain showers/ts over northern ND. These features will slowly migrate south 
into the central Dakotas...supporting a weak ll pressure response 
and increased conditional instability in their vicinity. 


Tonight...middle level impulse will continue to advect south away from 
the western forecast area. Some lingering rain showers activity will be possible 
through early evening there...with dry conditions expected the 
remainder of the night. Clearing skies and light winds will support 
decent radiational cooling...with lows in the 50s and some 40s 
expected. 


Wednesday...aforementioned weak vorticity lobes will advect into central 
South Dakota with an associated cold pocket aloft. Model momentum and 
pressure fields indicate a weak ll response with ensuing convergence 
over the southeast forecast area. This coupled with diurnal heating may be enough to 
support a few rain showers/ts over the far southeast...a signal that has been 
hinted at in the hires models for the last several runs. Have decide 
to add a small pop scentral in the afternoon. A few model solutions 
indicate the potential for convection late Wednesday morning...but opted 
for a mention closer to peak heating. Lingering moisture with Middle 
Ridge convergence may also support an isolated rain showers over the central 
answer southern Black Hills. However...lack of upper level support 
precludes a pop/weather mention there. Bumped temperatures up in the east given 
ongoing dry conditions...especially around the php-icr area. A few 
lingering rain showers are possible over scntrl areas into the evening if 
activity does develop Wednesday afternoon. Otherwise...dry conditions 
expected Wednesday night at this time. 


&& 


Long term...Thursday through Tuesday 
issued at 209 PM MDT Tuesday Jul 29 2014 


Upper level ridging over the western Continental U.S. Will continue through end 
of the week into the weekend. Generally dry weather is expected 
through this weekend...but models are indicating a slow transition 
to a more active pattern next week. A series of waves may push 
through the flow slowly...breaking down the ridge...and bringing 
better chances for storms. Temperatures overall will near seasonal 
averages through the end of the week...then a slight warming trend 
is possible early next week. 


&& 


Aviation...(for the 06z tafs through 06z Wednesday night) 
issued at 1011 PM MDT Tuesday Jul 29 2014 


VFR conditions will prevail through the period as middle/high clouds 
pass overhead. Isolated -tsra may develop Wednesday afternoon over 
south central South Dakota with local MVFR ceilings in the heaviest showers. 


&& 


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


$$ 


Update...helgeson 
short term...jc 
long term...13 
aviation...helgeson 








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