| NWS Forecast for: Fallon County Issued by: National Weather Service Billings, MT Last Update: 1238 AM MDT Sun Aug 23 2026 | |
| Today: Mostly sunny. Slight chance of showers in the morning, then slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 10 to 20 mph. Chance of precipitation 20 percent. Tonight: Partly cloudy. A 20 percent chance of showers and thunderstorms late in the evening. Lows in the upper 50s. East winds 5 to 15 mph in the evening shifting to the southwest 5 to 10 mph overnight. Monday: Mostly sunny. Highs in the upper 80s. Northwest winds 10 to 20 mph. Monday Night: Mostly clear. Lows in the lower 50s. Northwest winds 5 to 15 mph. Tuesday: Sunny. Highs in the mid 80s. Northwest winds 10 to 20 mph. Tuesday Night: Mostly clear. Lows around 50. Wednesday: Sunny. Highs in the mid 80s. Wednesday Night: Mostly clear. Lows in the lower 50s. Thursday: Mostly sunny. Highs around 90. Thursday Night: Partly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of rain showers overnight. Lows in the mid 50s. Chance of precipitation 20 percent. Friday: Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs around 90. Chance of precipitation 30 percent. Friday Night: Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 50s. Saturday: Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs around 90. | |
| Zone Forecast: Fallon County | |
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