Updated: 10:00 AM CDT on October 31, 2014
Partly cloudy. Fog early. High of 55F. Winds from the SSE at 10 to 15 mph.
Partly cloudy. Low of 37F. Winds from the South at 5 to 15 mph.
Partly cloudy. High of 72F. Winds from the SSE at 5 to 10 mph.
Partly cloudy. Low of 52F. Winds from the SSW at 10 to 15 mph.
Overcast in the morning, then mostly cloudy. High of 59F. Winds from the WSW at 10 to 15 mph.
Partly cloudy. Low of 34F with a windchill as low as 28F. Winds from the WNW at 5 to 10 mph.
Partly cloudy in the morning, then clear. High of 45F. Breezy. Winds from the WNW at 10 to 20 mph.
Partly cloudy in the evening, then clear. Low of 28F. Winds from the NW at 5 to 15 mph shifting to the SW after midnight.
Clear. High of 55F. Winds from the SW at 10 to 15 mph.
Partly cloudy. Low of 41F. Winds from the WSW at 10 to 15 mph.
Clear. High of 61F. Winds from the WSW at 5 to 15 mph.
Partly cloudy. Low of 43F. Winds from the SE at 5 to 10 mph.
Clear. High of 59F. Winds from the South at 10 to 15 mph.
Partly cloudy. Low of 48F. Breezy. Winds from the SW at 15 to 20 mph.
Partly cloudy. High of 61F. Winds from the WNW at 5 to 20 mph.
Partly cloudy. Low of 32F. Winds from the WNW at 10 to 15 mph.
Clear. High of 50F. Winds from the WNW at 10 to 15 mph.
Clear. Low of 28F. Winds less than 5 mph.
Partly cloudy. High of 39F. Winds less than 5 mph.
Partly cloudy. Low of 30F. Winds less than 5 mph.
Partly cloudy. High of 46F. Winds from the West at 5 to 10 mph.
Clear. Low of 30F. Winds from the West at 5 to 10 mph.
Personal Weather Stations [Add your weather station!]
Location: TMWC, Spearfish, SD
Updated: 1:07 PM MDT
|Temperature: 48.7 °F||Dew Point: 37 °F||Humidity: 64%||Wind: WNW at 2.3 mph||Pressure: 29.98 in||Hourly Precipitation: 0.00 in||Windchill: 49 °F||Graphs|
Location: Mountain Plains I, Spearfish, SD
Updated: 1:05 PM MDT
|Temperature: 50.9 °F||Dew Point: 34 °F||Humidity: 53%||Wind: Calm||Pressure: 30.06 in||Hourly Precipitation: 0.00 in||Windchill: -||Graphs|
Location: Spearfish, SD
Updated: 1:04 PM MDT
|Temperature: 50.4 °F||Dew Point: 37 °F||Humidity: 59%||Wind: ENE at 3.8 mph||Pressure: 29.49 in||Hourly Precipitation: 0.00 in||Windchill: -||Graphs|
Location: County Road 172, Sundance, WY
Updated: 12:57 PM MDT
|Temperature: 56.0 °F||Dew Point: 31 °F||Humidity: 38%||Wind: SW at 12.0 mph||Pressure: 30.02 in||Hourly Precipitation: 0.00 in||Windchill: -||Graphs|
Updated: 11:41 AM MDT
|Temperature: 43 °F||Dew Point: 31 °F||Humidity: 62%||Wind: ESE at 21 mph||Pressure: -||Hourly Precipitation: 0.00 in||Windchill: 34 °F||Graphs|
Updated: 12:30 PM MDT
|Temperature: 52 °F||Dew Point: -||Humidity: -||Wind: Calm||Pressure: -||Hourly Precipitation: 0.00 in||Windchill: -||Graphs|
Location: Dumont Trailhead, Lead, SD
Updated: 1:00 PM MDT
|Temperature: 45.4 °F||Dew Point: 31 °F||Humidity: 56%||Wind: South at 17.0 mph||Pressure: 30.06 in||Hourly Precipitation: 0.00 in||Windchill: 38 °F||Graphs|
MSN Maps of:
|Temp:||Dew Point:||Humidity||Wind||Pressure||Hr Precip||-|
Area forecast discussion for western South Dakota and northeastern Wyoming National Weather Service Rapid City South Dakota 1118 am MDT Friday Oct 31 2014 Update... issued at 955 am MDT Friday Oct 31 2014 Upper levels have ridge moving across The Rockies into the Great Plains. At the surface...Canadian high pressure is located across the eastern Dakotas with low pressure over the northern rockies. Tight pressure gradient persists between these two features. Skies are cloudy across much of the area...with deck of low stratus/fog across far western South Dakota and parts of northeast Wyoming. Temperatures are in the 20s and 30s with breezy south to southeast winds. Stratus/fog deck will continue to slowly break up...with the northern and eastern foothills seeing the latest improvement. As more sun filters through...boundary layer will begin to mix better...and south winds should pick up quite a bit by noon. A Wind Advisory is still in effect for much of northwest South Dakota this afternoon. High temperatures will remain below average across the South Dakota plains today. && Short term...today through Saturday night issued at 310 am MDT Friday Oct 31 2014 Current surface analysis shows frontal boundary south and west of the forecast area...with high pressure centered over eastern ND. Colder air has settled across the Dakotas...with east-southeast winds developing on the back side of the high. Upper level analysis shows a large scale trough over much of the eastern and central Continental U.S....a ridge over The Rockies region...and a low pressure system off the Pacific coast. Moist...upslope flow at low levels is bringing a large band of stratus into the area...with some fog developing over western South Dakota and northeast Wyoming. Temperatures are mostly in the 30s over cloud covered areas...with some 20s where skies remain clear. The generally pleasant weather of late will continue into early November as ridging pattern mostly stays in place over the region. After a gloomy start this morning in many areas...with some areas of fog...conditions will improve through the middle and late morning hours as clouds gradually dissipate. However...a tight pressure gradient in place over the western Dakotas...far eastern Montana...and northeastern Wyoming will produce gusty south to southeast winds by early afternoon. A Wind Advisory is in effect for this afternoon over most of the northwest and west central South Dakota plains...with some gusts of 45 to 50 miles per hour expected. Winds will begin to taper off toward sunset...but remain breezy into the evening hours in many areas. For Halloween activities this evening...temperatures look to be mostly in the 40s...with 30s over portions of northwestern into central South Dakota. Some warmer air will begin to build into the area from the west during the overnight and especially on Saturday as the ridge shifts east into the High Plains. Lows tonight will be in the upper 20s and 30s. Unseasonably mild temperatures will return to most areas for Saturday...with highs ranging from the upper 50s toward central South Dakota to the lower 70s over northeast Wyoming and much of the far southwestern South Dakota plains. Mostly sunny skies are expected...with some increase in clouds likely in the afternoon and evening. Winds will be from the south and southwest over northeast Wyoming and southwest South Dakota...with gusty south to southeast winds over south central South Dakota. Gusty southwest winds will develop over northeast Wyoming Saturday night ahead of an approaching cold front that will pass through on Sunday. && Long term...Sunday through Thursday issued at 310 am MDT Friday Oct 31 2014 The models remain in generally good agreement through early next week. An upper trough will be located over the western Continental U.S. On Saturday night with the upper ridge shifting off to the east. The main upper low will cross the northern rockies on Sunday and will head northeastward into Saskatchewan as a weak surface cold front swings into western South Dakota. Meanwhile the secondary low will continue to dig southward into The Four Corners region. Due to the split flow...the main forcing will remain to the north and south of the forecast area. At this time it appears that with the expected path of the northern upper low...dry air aloft will be located over much of the forecast area....so have removed the low probability of precipitation that were previously in the forecast over northeastern Wyoming and northwestern South Dakota. It does look like there may be enough instability in the frontal zone to include a chance of showers over parts of southwestern and scntrl South Dakota on Sunday night and Monday. Dry and cooler weather is then expected through the rest of the week. && Aviation...(for the 18z tafs through 18z saturday) issued at 1114 am MDT Friday Oct 31 2014 Local MVFR/IFR ceilings along east side of Black Hills will dissipate rapidly early this afternoon. VFR conditions then expected for the remainder of the afternoon through tonight. Gusty south winds will continue through this afternoon...then diminish this evening. && Unr watches/warnings/advisories... South Dakota...Wind Advisory until 6 PM MDT this evening for sdz001-002-012>014- 026-031-032-072-073. Wyoming...none. && $$ Update...15 short term...26 long term...10 aviation...7