Spearfish, South Dakota Weather Conditions

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Current Conditions

  • 48°
  • Mostly Cloudy
  • Wind: East 8 mph
  • Humidity: 100%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 30.05 in. -

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Next 12 Hours

1  pm
4  pm
7  pm
10  pm
1  am
Thunderstorm
T-storms
Thunderstorm
T-storms
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
50°
57°
46°
46°
50°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Thunderstorm
  • High: 57 °
  • Low: 45 °
  • T-Storms
  • Wednesday
  • Chance of Rain
  • High: 55 °
  • Low: 37 °
  • Chance of Rain
  • Thursday
  • Chance of Rain
  • High: 57 °
  • Low: 30 °
  • Chance of Rain
  • Friday
  • Partly Cloudy
  • High: 57 °
  • Low: 45 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 68 °
  • Low: 50 °
  • Partly Cloudy

Forecast for Spearfish, South Dakota

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

  • Tuesday

    Overcast with thunderstorms and rain showers. High of 57F. Windy. Winds from the NNW at 15 to 30 mph with gusts to 35 mph. Chance of rain 100% with rainfall amounts near 0.6 in. possible.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 45F. Breezy. Winds from the West at 10 to 25 mph with gusts to 30 mph. Chance of rain 30%.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 55F. Winds from the WNW at 10 to 15 mph. Chance of rain 20%.

  • Wednesday Night

    Mostly cloudy. Low of 37F. Winds from the West at 5 to 15 mph.

  • Thursday

    Clear in the morning, then partly cloudy. High of 57F. Breezy. Winds from the WNW at 10 to 20 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy with a chance of rain. Low of 30F with a windchill as low as 23F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Friday

    Clear in the morning, then partly cloudy. High of 57F. Winds from the West at 5 to 15 mph.

  • Friday Night

    Partly cloudy. Low of 45F. Winds from the West at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 68F. Breezy. Winds from the West at 10 to 30 mph.

  • Saturday Night

    Partly cloudy. Low of 50F. Breezy. Winds from the West at 15 to 20 mph.

  • Sunday

    Partly cloudy. High of 68F. Breezy. Winds from the NW at 15 to 20 mph.

  • Sunday Night

    Partly cloudy. Low of 48F. Winds from the West at 5 to 10 mph.

  • Monday

    Clear. High of 63F. Breezy. Winds from the WSW at 10 to 25 mph shifting to the WNW in the afternoon.

  • Monday Night

    Clear. Low of 48F. Winds from the North at 5 to 10 mph shifting to the ESE after midnight.

  • Tuesday

    Clear. High of 70F. Winds from the WSW at 5 to 15 mph.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 46F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Clear. High of 57F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 43F. Winds less than 5 mph.

  • Thursday

    Mostly cloudy with a chance of rain. High of 50F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 39F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

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

  • Friday Night

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

Severe Weather Alert Descriptions

 Record Report  Statement as of 2:40 am MDT on September 30, 2014


... Record daily maximum rainfall set at Rapid City Airport SD...

A record rainfall of 2.05 inches was set at Rapid City Airport SD
yesterday. This breaks the old record of 0.44 set in 1965.

Yesterdays rainfall was the second highest one day total for the
month of September. The highest one day total of rainfall for
September is 2.13 inches which fell on September 13 1966.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: TMWC, Spearfish, SD

Updated: 11:51 AM MDT

Temperature: 52.5 °F Dew Point: 52 °F Humidity: 100% Wind: WSW at 10.4 mph Pressure: 29.56 in Hourly Precipitation: 0.05 in Windchill: - Graphs

Location: Mountain Plains I, Spearfish, SD

Updated: 11:51 AM MDT

Temperature: 50.5 °F Dew Point: 50 °F Humidity: 98% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Spearfish, SD

Updated: 11:50 AM MDT

Temperature: 52.3 °F Dew Point: 52 °F Humidity: 98% Wind: North at 12.1 mph Pressure: 29.06 in Hourly Precipitation: 0.04 in Windchill: - Graphs

Location: County Road 172, Sundance, WY

Updated: 11:47 AM MDT

Temperature: 50.6 °F Dew Point: 50 °F Humidity: 96% Wind: WNW at 14.0 mph Pressure: 29.42 in Hourly Precipitation: 0.08 in Windchill: - Graphs

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

Updated: 10:30 AM MDT

Temperature: 46 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.11 in Windchill: 46 °F Graphs

Location: Dumont Trailhead, Lead, SD

Updated: 11:47 AM MDT

Temperature: 45.1 °F Dew Point: 44 °F Humidity: 97% Wind: NNW at 8.0 mph Pressure: 29.63 in Hourly Precipitation: 0.12 in Windchill: 41 °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 
1132 am MDT Tuesday Sep 30 2014 


Update... 
issued at 1109 am MDT Tuesday Sep 30 2014 


Made some adjustments to the flood headlines. See the hydrology 
section below. 


&& 


Short term...today through Wednesday night 
issued at 236 am MDT Tuesday Sep 30 2014 


08z surface analysis had low between kaia/kcdr/kien. Upper low 
now stacked on top of surface low per water vapor. Forcing ahead 
of system pronounced with convection firing along warm front from 
low into central South Dakota. Convection feeding strong deformation zone 
from southwest ND through the Black Hills into the NE Panhandle. 
00z NAM a bit further east with heaviest band of precipitation 
this morning and the 00z GFS farthest west. Split the difference 
and you end up with the best rains occurring in the current Flood 
Watch area. Heaviest rain should fall this morning as low level 
upslope feeds into strong synoptic lift/deformation zone. As low 
passes...rapid shift to west/northwest winds expected and well- 
defined isallobaric forcing. Cold air advection not that 
strong...but subsidence/pressure rises behind low should be 
sufficient for a period of advisory criteria winds from west 
central/southwest into south central South Dakota today. Temperatures will 
be all over the place...but likely lower than guidance over 
central portions of the County Warning Area. 


Tonight...stacked system races into southern sk/mb as it weakens. 
Cyclonic flow will support some -shra over the County Warning Area. Temperatures 
will be near guidance. 


Wednesday...secondary upper trough slices through the region with 
best forcing across southern portions of the County Warning Area and thus have 
painted better probability of precipitation toward the South Dakota/NE border. Temperatures will be 
near guidance. 


&& 


Long term...Thursday through Monday 
issued at 236 am MDT Tuesday Sep 30 2014 


Cyclonic flow will continue over the region Thursday. A strong 
upper wave is prognosticated to dive down the backside of the trough 
Thursday and Thursday night...bringing a strong cold front to the 
area. Gusty northwest winds are expected behind the front as a tight 
pressure gradient develops. Isolated showers will be possible with 
the frontal passage. High pressure will quickly build in with upper ridging 
developing across the western Continental U.S.. dry weather is expected 
through the end of this week into early next week. Temperatures will be 
cooler than average Thu/Fri...then warm back to seasonal averages 
by the weekend. 


&& 


Aviation...for the 18z tafs through 18z Wednesday 
issued at 1136 am MDT Tuesday Sep 30 2014 


Storm system near kphp moving northeastward...W/ widespread showers...isolated 
thunderstorms...and MVFR cigs/vsby...especially over western South Dakota this afternoon. Gusty 
northwest winds will increases over northestern Wyoming/southwestern into S central South Dakota this 
afternoon. Ceilings will improve this evening...while winds diminish and become 
westerly. 


&& 


Hydrology... 
issued at 1109 am MDT Tuesday Sep 30 2014 


The low pressure center currently located over Haakon County will 
continue to accelerate off toward the northeast this afternoon. 
Bands of showers will continue over much of the forecast area 
through the afternoon but will shift northeastward as well. The 
Flood Watch that was in effect for parts of northeastern Wyoming 
and western South Dakota was set to expire at noon. Although rain 
showers will continue to be found over the area...it looks like 
the threat of widespread heavy rain is ending...so have cancelled 
that Flood Watch. A Flood Advisory remains in effect for Fall 
River County and parts of Custer...western Pennington and far 
western Shannon counties until 700 PM MDT this evening. Those are 
the areas which received the most rain over the past couple of 
days. Small creeks and streams are running very high in those 
areas. Debris in those streams can quickly block culverts which 
could cause minor flooding. 


&& 


Unr watches/warnings/advisories... 
South Dakota...Wind Advisory until 6 PM MDT /7 PM CDT/ this evening for sdz026- 
027-030>032-041>044-046-047-049-072>074. 


Wyoming...none. 
&& 


$$ 


Update...10 
short term...helgeson 
long term...13 
aviation...13 
hydrology...10 



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