Casper, Wyoming – Dry winds, triple-digit heat indices, and active fire weather are converging on Wyoming just as summer travel ramps up across the state.
According to the National Weather Service in Riverton, a Red Flag Warning remains in effect for Natrona County from noon to 9 p.m. Sunday, with humidity levels dropping below 15% and gusty west winds reaching 25 mph. Elevated to critical fire weather conditions are possible across southern and central Wyoming, especially near open rangelands and foothills.
Expect highs near 95°F in Riverton and 98°F in Casper on Sunday, with dry lightning and isolated thunderstorms possible in the afternoon. Wind gusts and erratic fire spread remain the biggest threats for outdoor areas. Avoid outdoor burning, secure loose debris, and postpone firework use until safer conditions return.
Heading into the workweek, scattered storms may redevelop each afternoon through Thursday, with Wednesday and Thursday seeing the greatest storm coverage. While daytime highs stay in the 89–94°F range, overnight lows will drop into the 50s, offering some relief.
🔎 Six-Day Forecast for Riverton (June 29 – July 4):
- Sunday: Sunny, hot, high near 95°F. Breezy with afternoon wind gusts up to 25 mph.
- Monday: Sunny, high near 89°F. Calm morning, light afternoon breezes.
- Tuesday (July 2): Sunny and hot, high near 94°F.
- Wednesday: Mostly sunny, high near 94°F. Slight chance of afternoon storms.
- Thursday: 30% chance of afternoon storms. High near 89°F.
- Friday (July 4th): Sunny and seasonal, highs in the upper 80s.
