Expect daytime highs in the 60s and 70s on Wednesday, with overnight lows in the 40s and 50s. Showers and thunderstorms are expected, with storms continuing through the Fourth of July. There is a chance for strong thunderstorms in parts of northeast Wyoming and southeast Montana. Temperatures on the Fourth will be slightly below average, with a chance of showers, thunderstorms, and breezy winds. A heatwave is on the way, as a ridge of high pressure will bring very hot temperatures next week.