Spearfish, South Dakota Weather Conditions

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Current Conditions

  • Clear
  • Wind: SE 6 mph
  • Humidity: 85%
  • Visibility: 10.0 miles
  • Dew Point: 0°
  • Pressure: 30.07 in. +
  • Heat Index: -8

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Next 12 Hours

9  pm
12  am
3  am
6  am
9  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Overcast
Overcast
Chance of Snow
Chance of Snow
Chance of Rain
Chance of Rain
14°
19°
23°
19°
37°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Snow
  • High: 39 °
  • Low: 25 °
  • Chance of Snow
  • Tuesday
  • Chance of Snow
  • High: 43 °
  • Low: 12 °
  • Chance of Snow
  • Wednesday
  • Partly Cloudy
  • High: 27 °
  • Low: 25 °
  • Partly Cloudy
  • Thursday
  • Clear
  • High: 50 °
  • Low: 37 °
  • Clear
  • Friday
  • Partly Cloudy
  • High: 64 °
  • Low: 36 °
  • Partly Cloudy

Forecast for Spearfish, South Dakota

Updated: 9:00 PM CST on February 01, 2015

  • Sunday

    Overcast with a chance of snow in the morning, then partly cloudy. High of 23F. Winds from the NW at 5 to 10 mph. Chance of snow 30%.

  • Sunday Night

    Partly cloudy in the evening, then overcast. Low of 14F. Winds less than 5 mph.

  • Monday

    Mostly cloudy with a chance of snow and a chance of rain. High of 39F with a windchill as low as 10F. Breezy. Winds from the West at 10 to 20 mph with gusts to 30 mph. Chance of snow 30%.

  • Monday Night

    Partly cloudy. Low of 25F. Winds from the WNW at 5 to 15 mph shifting to the South after midnight.

  • Tuesday

    Overcast with a chance of snow and a chance of rain. High of 43F. Winds from the WNW at 10 to 15 mph. Chance of snow 30%.

  • Tuesday Night

    Overcast with a chance of snow. Fog overnight. Low of 12F. Winds from the NNW at 5 to 10 mph. Chance of snow 50%.

  • Wednesday

    Partly cloudy. High of 27F. Winds from the NNW at 5 to 10 mph shifting to the West in the afternoon.

  • Wednesday Night

    Partly cloudy. Low of 25F with a windchill as low as 12F. Winds from the SW at 10 to 15 mph.

  • Thursday

    Partly cloudy. High of 50F. Winds from the SW at 5 to 15 mph.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 37F. Winds from the SW at 10 to 15 mph.

  • Friday

    Clear in the morning, then partly cloudy. High of 64F. Breezy. Winds from the SW at 10 to 20 mph.

  • Friday Night

    Partly cloudy. Low of 36F. Winds from the SSW at 5 to 15 mph.

  • Saturday

    Clear. High of 54F. Winds from the SSW at 5 to 15 mph.

  • Saturday Night

    Partly cloudy with a chance of rain. Low of 41F. Breezy. Winds from the West at 15 to 20 mph. Chance of rain 40%.

  • Sunday

    Clear. High of 61F. Breezy. Winds from the WSW at 10 to 20 mph.

  • Sunday Night

    Clear. Low of 37F. Winds from the SSW at 10 to 15 mph.

  • Monday

    Clear. High of 64F. Winds from the West at 5 to 10 mph.

  • Monday Night

    Clear. Low of 36F. Winds from the WNW at 10 to 15 mph.

  • Tuesday

    Clear. High of 59F. Winds from the NW at 10 to 15 mph.

  • Tuesday Night

    Clear. Low of 32F with a windchill as low as 25F. Winds from the WNW at 5 to 15 mph.

  • Wednesday

    Clear. High of 55F. Winds from the WNW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 34F. Winds from the West at 5 to 10 mph.

  • Thursday

    Clear with a chance of rain. High of 57F. Winds from the WNW at 10 to 15 mph. Chance of rain 20%.

  • Thursday Night

    Clear with a chance of rain. Low of 34F. Winds from the WNW at 5 to 15 mph. Chance of rain 20%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 6:42 PM MST

Temperature: 10.4 °F Dew Point: -2 °F Humidity: 56% Wind: SSW at 1.2 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Windchill: 10 °F Graphs

Location: APRSWXNET Spearfish SD US, Spearfish, SD

Updated: 5:55 PM MST

Temperature: 11 °F Dew Point: -2 °F Humidity: 56% Wind: SSE at 3 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Windchill: 11 °F Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 3:01 PM MST

Temperature: 14.9 °F Dew Point: 2 °F Humidity: 56% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 15 °F Graphs

Location: Green Acres, Spearfish, SD

Updated: 6:42 PM MST

Temperature: 9.3 °F Dew Point: - Humidity: - Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 9 °F Graphs

Location: Hat Ranch, Belle Fourche, SD

Updated: 6:40 PM MST

Temperature: 5.4 °F Dew Point: 2 °F Humidity: 86% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 5 °F Graphs

Location: NonFedAWOS BELLE FOURCHE SD US SUPERAWOS, Belle Fourche, SD

Updated: 6:15 PM MST

Temperature: 7 °F Dew Point: - Humidity: 72% Wind: East at 8 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: -6 °F Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 6:35 PM MST

Temperature: 5.9 °F Dew Point: -1 °F Humidity: 73% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 6 °F Graphs

Location: APRSWXNET Lead SD US, Lead, SD

Updated: 6:02 PM MST

Temperature: 8 °F Dew Point: 1 °F Humidity: 71% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 8 °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 
426 PM MST sun Feb 1 2015 


Short term...this evening through Monday night 
issued at 150 PM MST sun Feb 1 2015 


Fast northwest flow will prevail with a series of clipper type systems 
progressing quickly through the area. Ll baroclinic zone will 
remain across the region...wavering with each impulse and 
supporting large diurnal temperature ranges. 


Arctic high shifting southeast of the region today with cold dry air 
spreading over the eastern forecast area. Light winds/snow pack/and favorable 
high position will support sharp temperature drops this evening...before ll 
flow responds to the next system. This will support lows at most 
locations in the evening...with rising temperatures overnight. Coldest 
temperatures are expected in scentral South Dakota...where the deepest snow pack and 
most favorable conds for strong rational cooling will be in place. 
Cut guidance sig there. 


Compact but strong shortwave trough over the Pacific northwest will quickly 
advect toward the region tonight...supporting increasing chances for 
snow showers across the far north and the northern Black Hills 
Monday morning. This system will push a surge of warm air into 
the region for Monday with temperatures responding quite well...especially given a 
strong reflection to the ll momentum fields which will support good 
mixing by afternoon. Steep ll rates expected by afternoon/decent 
pressure rise signature of around 3mb/6/with strong ll momentum 
fields will support gusty northwest winds behind the surface trough. Have 
increased winds on the South Dakota plains. Snow chances look best across far 
northwest South Dakota where the best collocation of deep uvm will reside. 
Otherwise...upslope forcing will support a period of light snow 
showers over the northern Black Hills especially given flow/moisture/and 
stability profiles. However...thermal profiles are less than 
impressive per Crystal production given warm air advection. Have opted for likely 
probability of precipitation there...although not expecting more than a quick inch or two. 
Dry weather expected Monday night as the system quickly departs the area 
with brief clearing before the next impulse supports increasing 
clouds once again. 


Long term...Tuesday through Sunday 
issued at 150 PM MST sun Feb 1 2015 


Northwest flow aloft will continue over the forecast area from Tuesday 
through Saturday. An upper trough and associated jet streak will 
sweep through the northern plains on Tuesday into Tuesday 
night...bringing chances for snow to the area. Snow may linger 
into Wednesday across the far southern parts of the forecast 
area...but dry weather is then expected through the rest of the 
week as the upper ridge over the western Continental U.S. Becomes stronger. 
There is a slight chance of rain showers on Saturday...as a wave 
moves through the upper ridge. 


The temperature forecast remains tricky as a surface frontal 
boundary fluctuates across the forecast area. There will be a wide 
variation in temperatures on either side of the boundary. Cooler air 
will begin pushing into the region Tuesday as the boundary shifts 
southward...with the northeast half of the County Warning Area seeing below average 
temperatures and the southwest County Warning Area having above average temperatures. Wednesday 
will be the coldest day of the week...before westerly winds aid in 
significant warming for the end of the week into next weekend. 


&& 


Aviation...(for the 00z tafs through 00z Monday evening) 
issued at 423 PM MST sun Feb 1 2015 


VFR conditions are expected through Monday morning as high clouds 
move across this evening and then some SC will move into the 
region in the 4-6k above ground level range. MVFR ceilings will develop across far 
northeast Wyoming/Black Hills/northwest South Dakota as some showers occur. 


&& 


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


$$ 


Short term...jc 
long term...pojorlie 
aviation...helgeson 



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