Keystone, South Dakota Weather
Keystone, South Dakota — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Keystone, Pennington County.
Full aviation weather for Keystone is published on the Custer County Airport (KCUT) page, 24 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 5 airfields within reach of Keystone have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Keystone: Rapid City Regional Airport (KRAP) 33 km · Ellsworth Air Force Base (KRCA) 37 km · Sturgis Municipal Airport (K49B) 58 km · Hot Springs Municipal Airport (KHSR) 59 km
Conditions reported at KCUT describe the airfield itself. Weather 24 km away can differ, particularly in terrain or near the coast. For conditions at Keystone specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Keystone.
About Keystone, South Dakota
Keystone lies cradled in a valley where the Black Hills begin their dramatic ascent, a place where granite shoulders rise abruptly from rolling grasslands. It lies 15.8 miles south-west of Rapid City, SD (from Rapid City, SD: bearing 216°T), and is situated 9.3 miles south-south-west of Colonial Pine Hills. The air here, especially in the early morning, carries a crisp, pine-scented coolness that hints at the elevation and the vastness of the surrounding wilderness. Jagged, weathered peaks, remnants of ancient volcanic activity, loom overhead, their stony faces catching the sun in a thousand different hues as the day progresses. Below, the land is a patchwork of sturdy ponderosa pines, their rough bark a testament to resilience, interspersed with meadows where wildflowers, in season, paint vibrant strokes across the landscape. The Cheyenne River, a ribbon of cool water, winds its way through this rugged terrain, its steady murmur a constant, grounding presence. The story of Keystone is deeply entwined with the earth from which it springs, its very name a nod to a perceived strength and centrality in the region's early days. This was a place where prospectors once searched for the glittering promise of gold, and though the fever has long since cooled, the echoes of that hopeful pursuit can still be felt in the weathered facades of older buildings and the enduring spirit of its people. Today, Keystone’s economy thrives on a different kind of extraction, drawing visitors who come to marvel at the monumental sculptures carved into the nearby mountains, a breathtaking testament to human ambition and artistic vision. The scent of roasting meats from local eateries often drifts on the breeze, mingling with the ever-present perfume of pine, a comforting blend that speaks of simple pleasures and a connection to the land that defines this unique corner of Pennington County.
Live animated radar for Keystone and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Keystone, Pennington County, South Dakota |
| Coordinates | 43.895544°N, 103.418246°W |
| Timezone | Mountain Time (America/Denver) |
| ZIP Code(s) | 57751 |
| Area Code | 605 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Keystone, South Dakota Weather Page
This page provides live weather conditions and forecasts for Keystone, South Dakota, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Keystone includes coordinates 43.895544°N, 103.418246°W, situated in Pennington County. ZIP code 57751. Telephone area code: 605. Timezone: Mountain Time (America/Denver).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
