| NWS Forecast for: Custer Co Plains Issued by: National Weather Service Rapid City, SD Last Update: 1013 PM MDT Wed Aug 19 2026 |  |
| Overnight: Clear. Lows around 60. Southwest winds 5 to 10 mph. Thursday: Sunny. Highs in the lower 90s. Northwest winds 5 to 10 mph, becoming northeast 10 to 15 mph in the afternoon. Thursday Night: Mostly clear. Lows in the lower 60s. Northeast winds 10 to 15 mph, becoming northwest around 5 mph after midnight. Friday: Partly cloudy in the morning, then clearing. Highs in the lower 90s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Friday Night: Mostly clear. Lows in the lower 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Saturday: Mostly sunny. Highs in the upper 80s. Saturday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 40 percent. Sunday: Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Sunday Night: Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. Monday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Monday Night: A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the lower 60s. Chance of rain 20 percent. Tuesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent. Tuesday Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20 percent. Wednesday: Mostly sunny. Highs in the lower 90s. | |
| Zone Forecast: Custer Co Plains | |
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