Spearfish, South Dakota Weather Conditions

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Current Conditions

  • 41°
  • Clear
  • Wind: WSW 5 mph
  • Humidity: 53%
  • Visibility: 10.0 miles
  • Dew Point: 25°
  • Pressure: 29.82 in. +
  • Heat Index: 38

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Next 12 Hours

4  am
7  am
10  am
1  pm
4  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
45°
41°
57°
61°
63°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Chance of Rain
  • High: 66 °
  • Low: 45 °
  • Chance of Rain
  • Saturday
  • Chance of a Thunderstorm
  • High: 68 °
  • Low: 48 °
  • Chance of T-Storms
  • Sunday
  • Rain Showers
  • High: 63 °
  • Low: 34 °
  • Rain Showers
  • Monday
  • Chance of Rain
  • High: 41 °
  • Low: 32 °
  • Chance of Rain
  • Tuesday
  • Chance of Snow
  • High: 43 °
  • Low: 32 °
  • Chance of Snow

Forecast for Spearfish, South Dakota

Updated: 4:00 AM CDT on April 25, 2014

  • Friday

    Partly cloudy. High of 66F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy with a chance of rain. Low of 45F. Winds from the SE at 10 to 15 mph. Chance of rain 20%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 68F. Breezy. Winds from the SE at 10 to 20 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and rain showers in the evening, then overcast with rain showers. Low of 48F. Breezy. Winds from the East at 10 to 20 mph. Chance of rain 70% with rainfall amounts near 0.7 in. possible.

  • Sunday

    Partly cloudy with rain showers. High of 63F. Winds from the North at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Sunday Night

    Overcast with a chance of rain in the evening, then partly cloudy with a chance of rain. Low of 34F. Windy. Winds from the NW at 20 to 30 mph. Chance of rain 70% with rainfall amounts near 0.9 in. possible.

  • Monday

    Overcast with a chance of rain in the morning, then partly cloudy with a chance of rain. High of 41F. Windy. Winds from the NW at 30 to 35 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Monday Night

    Overcast with a chance of rain. Low of 32F. Breezy. Winds from the NW at 20 to 25 mph. Chance of rain 70% with rainfall amounts near 0.8 in. possible.

  • Tuesday

    Partly cloudy with a chance of snow and a chance of rain, then a chance of rain in the afternoon. High of 43F. Breezy. Winds from the NW at 15 to 20 mph. Chance of precipitation 70% .

  • Tuesday Night

    Mostly cloudy with a chance of snow. Fog overnight. Low of 32F with a windchill as low as 23F. Breezy. Winds from the NW at 10 to 20 mph. Chance of snow 70% with accumulations up to 1 in. possible.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 48F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 50%.

  • Wednesday Night

    Partly cloudy with a chance of rain. Low of 30F with a windchill as low as 23F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 50%.

  • Thursday

    Clear with a chance of rain. High of 55F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 40%.

  • Thursday Night

    Clear. Low of 30F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Friday

    Clear. High of 63F. Winds from the WSW at 5 to 15 mph.

  • Friday Night

    Clear. Low of 37F. Winds less than 5 mph.

  • Saturday

    Clear. High of 64F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 37F. Winds less than 5 mph.

  • Sunday

    Mostly cloudy. High of 66F. Winds less than 5 mph.

  • Sunday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 39F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Partly cloudy. High of 68F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 39F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 3:01 AM MDT

Temperature: 42.4 °F Dew Point: 24 °F Humidity: 48% Wind: SSW at 3.5 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 2:57 AM MDT

Temperature: 45.3 °F Dew Point: 22 °F Humidity: 40% Wind: South at 5.4 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Spearfish, SD

Updated: 3:00 AM MDT

Temperature: 40.3 °F Dew Point: 28 °F Humidity: 62% Wind: South at 3.1 mph Pressure: 29.29 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

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

Updated: 2:30 AM MDT

Temperature: 29 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Wharf, Lead, SD

Updated: 2:54 AM MDT

Temperature: 27.6 °F Dew Point: -4 °F Humidity: 25% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: RAWS ADAMS WEATHER STATION WY US, Lead, SD

Updated: 2:09 AM MDT

Temperature: 28 °F Dew Point: 21 °F Humidity: 76% Wind: ESE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 2:52 AM MDT

Temperature: 27.7 °F Dew Point: 24 °F Humidity: 84% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: MesoWest NORTH RAPID CREEK SD US SNOTEL, Lead, SD

Updated: 2:00 AM MDT

Temperature: 33 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 33 °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 
1056 PM MDT Thursday Apr 24 2014 


Short term...this evening through Friday night 
issued at 232 PM MDT Thursday Apr 24 2014 


Deep upper trough will continue to dig into the 
western Continental U.S....with mean height rises pushing east into the 
northern plains through Friday. Two weak impulses will eject out of 
the mean upper upper low...and into the region...possibly supporting 
a few showers across the northwest half of the forecast area...especially Friday night. Warm air advection 
ongoing across the region today...and will continue through Friday 
ahead of the deep upper trough. Surface pressure falls expected through 
the period with winds shifting southeast and increasing per Lee side 
troughing...which will be enhanced by the approaching upper 
low. 


Tonight...weak elevated Theta-E advection /evidenced well at 700 mb/ will 
support an area of weak lift across the northwest zones this 
evening...possibly supporting a few sprinkles when coupled with a 
weak upper level impulse. Dry ll profiles and lack of sufficient 
moisture precludes a rain showers mention. Otherwise...expect increasing 
high clouds through the period...with lows generally in the 30s /40s 
in the Lee of the bh/. 


Friday...SW flow with increasing elevated moisture will support 
scattered-broken middle and high clouds...especially in the afternoon/evening. Still 
expecting enough insolation to support fairly deep mixing...pushing 
temperatures into the 70s most places. Deep mixing over the higher terrain 
of NE Wyoming and the western bh with increasing middle level moisture 
coupled with an advancing upper level impulse may be sufficient for 
a few isolated high based rain showers there late Friday afternoon. NAM Li/S 
certainly hint at this and a few hires models do generate 
convection. Have added a low pop for this. Slightly better chances 
for rain showers arrive later Friday night...mainly the northwest half...albeit 
only isolated to scattered. Have retained a rain showers mention Friday 
night...shifting the higher chances after midnight. Increasing surface 
pressure falls will help maintain a partially mixed bl through the 
night most places...with lows in the 40s expected most places. Have 
bumped lows up a couple degrees. 


&& 


Long term...Saturday through Thursday 
issued at 232 PM MDT Thursday Apr 24 2014 


Upper level trough will move over The Rockies on 
Saturday. Surface low over eastern Colorado will create breezy southeast 
winds...especially across central South Dakota...bringing in warm and moist 
air. Instability and moisture influx will allow showers and 
thunderstorms to develop Saturday afternoon and evening as the low 
approaches. Highs on Saturday will be in the lower 60s to lower 70s. 


Track of the upper low is still uncertain at this point...with the 
GFS bringing it into South Dakota Sunday night and the European model (ecmwf) keeping it 
farther south in Nebraska. Both wrap cooler air back into the County Warning Area 
behind the low...but temperatures should stay warm enough for the event to 
be mainly rain...especially on the South Dakota plains. Snow is more possible 
across northeast Wyoming and the Black Hills where lows dip below 
freezing Sunday and Monday nights. Also have some isolated 
thunderstorms in the forecast across central South Dakota where instability is 
better. 


Models are indicating that when the upper low shifts 
eastward...energy northeast of it will be taken in and circulated 
back around the low...slowing it down and actually causing the 
system to retrograde. Therefore...precipitation and cool weather may 
stick around for the first half of the week. Overall the system 
looks very moist...with precipitable waters  180-200% of normal. Many areas may 
receive more than an inch of quantitative precipitation forecast...with the Black Hills possibly 
receiving more than two inches. Added moderate precipitation wording 
in the weather grids. 


&& 


Aviation...(for the 06z tafs through 06z Friday night) 
issued at 1054 PM MDT Thursday Apr 24 2014 


Isolated showers are possible across northeast Wyoming and far 
western South Dakota Friday afternoon and evening. Local MVFR visibility 
possible with the showers...otherwise VFR conditions expected 
through Friday evening. 


&& 


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


$$ 


Short term...jc 
long term...pojorlie 
aviation...7 












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