| NWS Forecast for: Custer County Issued by: National Weather Service Billings, MT Last Update: 1238 PM MDT Fri May 22 2026 |  |
| Rest Of Today: Sunny, warmer. Highs in the upper 60s. Northwest winds 5 to 15 mph. Tonight: Mostly clear. Lows around 40. North winds 5 to 10 mph in the evening becoming light overnight. Saturday: Sunny. Highs in the mid 70s. Southwest winds 5 to 10 mph. Saturday Night: Partly cloudy. Lows in the mid 40s. South winds 5 to 10 mph. Sunday: Sunny. Highs in the mid 80s. West winds 5 to 15 mph. Sunday Night: Mostly clear. Lows in the lower 50s. Memorial Day: Sunny. Highs in the lower 90s. Monday Night: Mostly clear. Lows in the lower 60s. Tuesday: Sunny. Highs in the lower 90s. Tuesday Night: Mostly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of showers overnight. Lows in the lower 60s. Chance of precipitation 20 percent. Wednesday: Partly sunny. Chance of showers and slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 30 percent. Wednesday Night: Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of precipitation 30 percent. Thursday: Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 30 percent. Thursday Night: Partly cloudy. A 30 percent chance of showers and thunderstorms in the evening. Lows in the mid 50s. Friday: Mostly sunny with a 20 percent chance of rain showers. Highs in the mid 80s. | |
| Zone Forecast: Custer County | |
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