Warm Through Saturday, Cooler Weather Arrives Sunday
High pressure continues to be the main weather feature across much of the state today. Expect abundant sunshine and mainly dry conditions for central and eastern portions of the state, but there could be isolated showers and thunderstorms in far western Wyoming. Temperatures will remain very warm to hot and about 15-20 degrees above average. Daytime highs will rise into the upper 70's and 80's. A cool front will then approach western and central Wyoming on Saturday. Expect not as hot and closer to average temperatures for western and central Wyoming, while temperatures still remain warmer than normal for eastern Wyoming. An upper-level weather system to our west will also funnel moisture into the area. The best chance for showers and thunderstorms will be in western parts of the state, but we cannot rule out a few hit or miss thunderstorms for the rest of the state. This weather system will slowly propagate east and interact with another cold front on Sunday. Cloudy to mostly cloudy skies with rain showers and a few thunderstorms will be likely for the end of the weekend. Heavy rain will make roads wet. Slightly reduced visibility and flash flooding could also be possible at times, especially along I-80 (Utah state line to Rawlins) in the afternoon and evening and all of I-90 overnight. Expect even cooler temperatures and near or slightly below normal temperatures statewide.