Spearfish, South Dakota Weather Conditions

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Current Conditions

  • 32°
  • Overcast
  • Wind: WNW 20 mph
  • Humidity: 60%
  • Visibility: 10.0 miles
  • Dew Point: 19°
  • Pressure: 29.76 in. -
  • Heat Index: 20

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Chance of Snow
Snow Showers
Snow Showers
25°
23°
23°
21°
30°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Snow Showers
  • High: 36 °
  • Low: 21 °
  • Snow Showers
  • Monday
  • Snow Showers
  • High: 28 °
  • Low: 23 °
  • Snow Showers
  • Tuesday
  • Chance of Snow
  • High: 36 °
  • Low: 23 °
  • Chance of Snow
  • Wednesday
  • Chance of Snow
  • High: 34 °
  • Low: 25 °
  • Chance of Snow
  • Thursday
  • Fog
  • High: 39 °
  • Low: 3 °
  • Fog

Forecast for Spearfish, South Dakota

Updated: 9:00 AM CST on November 23, 2014

Wind Advisory in effect until 8 PM MST this evening...
  • Sunday

    Mostly cloudy with snow showers. High of 36F with a windchill as low as 18F. Windy. Winds from the WNW at 20 to 35 mph with gusts to 45 mph. Chance of snow 50%.

  • Sunday Night

    Partly cloudy with a chance of snow. Low of 21F with a windchill as low as 9F. Windy. Winds from the WNW at 15 to 30 mph with gusts to 35 mph. Chance of snow 40% with accumulations up to 2 in. possible.

  • Monday

    Partly cloudy with snow showers, then a chance of snow in the afternoon. High of 28F with a windchill as low as 7F. Breezy. Winds from the NW at 15 to 25 mph with gusts to 30 mph. Chance of snow 50%.

  • Monday Night

    Partly cloudy with a chance of snow. Low of 23F with a windchill as low as 10F. Breezy. Winds from the WNW at 15 to 20 mph. Chance of snow 20%.

  • Tuesday

    Overcast with a chance of snow in the morning, then mostly cloudy with a chance of snow. High of 36F with a windchill as low as 16F. Winds from the West at 10 to 15 mph. Chance of snow 40%.

  • Tuesday Night

    Mostly cloudy with a chance of snow in the evening, then overcast. Low of 23F with a windchill as low as 14F. Winds from the West at 10 to 15 mph.

  • Wednesday

    Overcast with a chance of snow and rain showers in the morning, then mostly cloudy with a chance of snow and rain showers. Fog early. High of 34F. Winds from the SSW at 5 to 10 mph. Chance of snow 50%.

  • Wednesday Night

    Overcast with a chance of snow. Fog overnight. Low of 25F. Winds less than 5 mph. Chance of snow 40% with accumulations up to 1 in. possible.

  • Thursday

    Overcast in the morning, then mostly cloudy. Fog early. High of 39F with a windchill as low as 3F. Winds from the SSW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 3F. Breezy. Winds from the WSW at 10 to 20 mph.

  • Friday

    Partly cloudy. Fog early. High of 39F with a windchill as low as -13F. Winds from the WSW at 10 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 16F with a windchill as low as 5F. Winds from the WNW at 5 to 15 mph shifting to the NNE after midnight.

  • Saturday

    Mostly cloudy with a chance of snow. High of 28F with a windchill as low as 10F. Winds from the ENE at 5 to 15 mph. Chance of snow 20%.

  • Saturday Night

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

  • Sunday

    Mostly cloudy with a chance of snow. High of 19F with a windchill as low as 3F. Winds from the East at 5 to 10 mph shifting to the NNE in the afternoon. Chance of snow 20%.

  • Sunday Night

    Partly cloudy with a chance of snow. Fog overnight. Low of 3F. Winds from the West at 5 to 15 mph. Chance of snow 20%.

  • Monday

    Clear. High of 28F with a windchill as low as -8F. Winds from the West at 5 to 10 mph.

  • Monday Night

    Clear. Fog overnight. Low of 14F. Winds from the WSW at 5 to 10 mph.

  • Tuesday

    Partly cloudy. Fog early. High of 28F with a windchill as low as 9F. Winds from the West at 5 to 10 mph.

  • Tuesday Night

    Mostly cloudy. Fog overnight. Low of 12F. Winds from the WSW at 5 to 10 mph.

  • Wednesday

    Mostly cloudy with a chance of snow. Fog early. High of 28F with a windchill as low as 10F. Winds from the West at 5 to 10 mph. Chance of snow 20%.

  • Wednesday Night

    Clear. Fog overnight. Low of 12F. Winds from the West at 5 to 10 mph.

Severe Weather Alert Descriptions

 Wind Advisory  Statement as of 3:39 PM CST on November 23, 2014/


... Wind Advisory remains in effect until 8 PM MST /9 PM CST/ this
evening...

A Wind Advisory remains in effect until 8 PM MST /9 PM CST/ this
evening.

* Timing... gusty northwest winds will continue through this
afternoon... gradually subsiding this evening.

* Winds... northwest 25 to 35 mph with gusts up to 50 mph.

* Impacts... sudden wind gusts can cause drivers to lose
control... especially in lightweight or high profile vehicles.
Strong winds can cause blowing dust... reduced visibility... and
flying debris.

Precautionary/preparedness actions...

A Wind Advisory means 30 mph winds... or gusts over 45 mph... are
expected or occurring.





Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 4:48 PM MST

Temperature: 35.4 °F Dew Point: 19 °F Humidity: 50% Wind: West at 10.4 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 4:45 PM MST

Temperature: 33.3 °F Dew Point: 17 °F Humidity: 51% Wind: NW at 2.7 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: Green Acres, Spearfish, SD

Updated: 4:48 PM MST

Temperature: 33.6 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 34 °F Graphs

Location: RAWS FORT MEAD QD #2 SD US, Fort Meade, SD

Updated: 2:41 PM MST

Temperature: 38 °F Dew Point: 20 °F Humidity: 48% Wind: WNW at 29 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

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

Updated: 3:30 PM MST

Temperature: 26 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 26 °F Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 4:39 PM MST

Temperature: 23.0 °F Dew Point: 17 °F Humidity: 78% Wind: North at 12.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: 11 °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 
440 PM MST sun Nov 23 2014 


Short term...this evening through Monday night 
issued at 240 PM MST sun Nov 23 2014 


Phasing central Continental U.S. Upper troughs continue to support Stout surface 
pressure falls over the Midwest...and rapid cyclogenesis there. 
Backside ll cold air advection and isobaric adjustment continues to support 
strong northwest winds across most of the forecast area...which will be the case 
into the evening. Advecting upper level trough and associated cold 
pocket coupled with diurnal heating has supported a few snow 
showers across the region...with upslope forcing supporting more 
persistent activity in the northern Black Hills. Active northwest flow 
will support another compact shortwave into the region...which 
will ride near the ll baroclinic zone settling just SW of the forecast area. 
This will create a western shift in the middle level impulse 
track...supporting precipitation chances mainly over the western third 
Monday. Colder conditions will prevail as the forecast area will mainly 
remain on the cold side of the ll frontal zone. 


Tonight...large scale decent will overspread the region with some 
ll drying this evening. This will support a wane in any snow rain showers 
activity...especially the northern Black Hills. Winds will remain gusty 
most of the night...falling below advection criteria this evening. 
Strongest winds and best downward momentum transport has occurred 
earlier this afternoon...hence decided to cancel the hww and 
replace with an advection. The next impulse in active northwest flow will 
arrive toward dawn...supporting a weak fgen response. Have 
continued an uptick in probability of precipitation early Monday morning...with chances 
for snow increasing across NE Wyoming. 


Monday...compact SW trough will advect mainly over the western 
forecast area...supporting renewed fgen with chances for snow western half. 
Overall...chances for snow showers will be low outside of the 
northern Black Hills and portions of NE Wyoming near the Black Hills 
given that the bulk of forcing for ascent will remain well SW of the 
forecast area. However...enough upper level support will be in place for 
upslope forcing with steep ll lapse rates and 20-30 knots of flow 
in increasing moisture and Froude. This will support a decent 
setup for snow showers with some accums in the northern Black 
Hills...with generally 1 to 3 inches possible...mainly from The Bear 
Lodge mountains to around Cheyenne Crossing. Any snow accums outside 
of the Black Hills will be an inch or less. Breezy conditions can be 
expected across the entire region...strongest over NE Wyoming given 
pressure rise/fall couplet with the passing impulse. 


&& 


Long term...Tuesday through Sunday 
issued at 240 PM MST sun Nov 23 2014 


An active pattern associated with deep cyclonic flow aloft will 
continue across the northern plains into midweek. Several weak 
disturbances within northwest flow will slide through...bringing a 
good deal of cloudiness and chances for snow showers at times from 
Tuesday through Wednesday night. The best chances for snow will 
generally be across far northeast Wyoming and the northern Black Hills 
area...where some light accumulations are a good possibility. 


For the Holiday period...longer range models continue to have a very 
difficult time settling on a consistent solution from Thanksgiving 
day into the Holiday weekend. Significant run to run inconsistencies 
persist...with the latest 12z runs of the GFS and European model (ecmwf) now much 
warmer for late this week...with the Canadian model still on the 
colder side. Will continue with more of a blend of the models for 
now and keep it colder than latest 12z guidance. It still looks 
mainly dry from Thanksgiving day into the weekend...but a few 
showers do look possible Thanksgiving day and night if a frontal 
boundary happens to be in the area. 


&& 


Aviation...(for the 00z tafs through 00z Monday evening) 
issued at 436 PM MST sun Nov 23 2014 


Gusty northwest winds will continue through this evening. Isolated 
to scattered shsn/MVFR ceilings are most likely across northwest 
South Dakota...the northern Black Hills...and portions of northeast Wyoming into 
the evening hours. Localized IFR conditions are expected with 
upslope enhanced shsn over the northern Black Hills this 
afternoon. VFR conditions then expected overnight with MVFR 
ceilings/visibilities starting very late tonight over northeast Wyoming into 
western South Dakota where -sn develops lasting through Monday afternoon. 


&& 


Unr watches/warnings/advisories... 
South Dakota...Wind Advisory until 8 PM MST /9 PM CST/ this evening for sdz001- 
002-012>014-025>027-031-032-041-043-044-046-047-049-072-073. 


Wyoming...none. 
&& 


$$ 


Short term...jc 
long term...26 
aviation...helgeson 



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