| NWS Forecast for: Upper Green River Basin Issued by: National Weather Service Riverton, WY Last Update: 1232 PM MDT Thu Jun 18 2026 |  |
| This Afternoon: Mostly sunny and breezy. Highs in the mid 70s. West winds 15 to 20 mph with gusts up to 30 mph. Tonight: Partly cloudy and breezy. Lows in the lower 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph in the evening. Juneteenth: Mostly sunny. Highs in the lower 80s. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. Friday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. Northwest winds 10 to 15 mph with gusts up to 25 mph in the evening. Saturday: Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph, becoming west 15 to 25 mph with gusts up to 40 mph in the afternoon. Chance of rain 30 percent. Saturday Night: Partly cloudy in the evening, then clearing. Breezy with lows around 40. Sunday: Mostly sunny. A slight chance of. Breezy with highs in the mid 70s. Sunday Night: Mostly clear. Lows around 40. Monday: Mostly sunny. Highs around 80. Monday Night: Clear. Lows around 40. Tuesday: Sunny. Highs in the lower 80s. Tuesday Night: Clear. Lows in the lower 40s. Wednesday: Sunny. Highs in the mid 80s. | |
| Zone Forecast: Upper Green River Basin | |
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