Boulder WeatherFriday 05/29 100%ThunderstormThunderstorms likely. High 56F. Winds NE at 5 to 10 mph. Chance of rain 100%.Saturday 05/30 0%ClearSun and a few passing clouds. High 66F. Winds E at 5 to 10 mph.Sunday 05/31 50%Chance of a ThunderstormPartly cloudy in the morning followed by scattered thunderstorms in the afternoon. High near 75F. Winds NW at 5 to 10 mph. Chance of rain 50%.