| NWS Forecast for: Custer SD Issued by: National Weather Service Rapid City, SD Last Update: 4:57 am MDT Jun 18, 2026 | |
| Today: A 20 percent chance of showers after noon. Mostly sunny, with a high near 68. Northwest wind 5 to 8 mph, with gusts as high as 22 mph. Tonight: Partly cloudy, with a low around 46. Northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 15 mph. Juneteenth: Mostly sunny, with a high near 71. Calm wind becoming east 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph. Friday Night: Partly cloudy, with a low around 47. East wind 3 to 8 mph. Winds could gust as high as 22 mph. Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 67. Light east wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 70%. Saturday Night: Showers and possibly a thunderstorm. Low around 49. East wind 5 to 10 mph becoming light northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Sunday: Showers and possibly a thunderstorm. High near 61. Chance of precipitation is 90%. Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 45. Monday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. Monday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 43. Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 67. Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 46. Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 72. | |
| Custer SD 43.76°N 103.6°W (Elev. 5417 ft) | |
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