| NWS Forecast for: Rock Springs and Green River Issued by: National Weather Service Riverton, WY Last Update: 247 PM MDT Thu Sep 17 2026 |  |
| This Afternoon: Partly cloudy with numerous showers and scattered thunderstorms. Highs in the lower 70s. Chance of rain 60 percent. Tonight: Partly cloudy. Numerous showers and scattered thunderstorms in the evening. Patchy fog after midnight. Lows in the upper 40s. Chance of rain 60 percent. Friday: Partly cloudy. Patchy fog in the morning. A chance of showers with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Highs around 70. South winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 80 percent. Friday Night: Mostly cloudy with showers with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Patchy fog after midnight. Lows in the lower 40s. Southwest winds around 10 mph with gusts up to 20 mph in the evening. Chance of rain 80 percent. Saturday: Partly cloudy. A slight chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of rain 80 percent. Saturday Night: Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Lows in the upper 30s. Chance of rain 30 percent. Sunday: Mostly sunny. Highs in the mid 60s. Sunday Night: Mostly clear. Lows in the upper 30s. Monday: Partly cloudy in the morning, then clearing. Highs around 70. Monday Night: Partly cloudy. Lows in the lower 40s. Tuesday: Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 30 percent. Tuesday Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows around 40. Chance of rain 20 percent. Wednesday: Mostly sunny. Highs in the lower 70s. | |
| Zone Forecast: Rock Springs and Green River | |
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