Boulder WeatherMonday 07/06 90%RainRain. Lows overnight in the low 50s.Tuesday 07/07 60%Chance of a ThunderstormCloudy in the morning with scattered thunderstorms developing later in the day. High 66F. Winds ENE at 5 to 10 mph. Chance of rain 60%.Wednesday 07/08 60%Chance of a ThunderstormScattered showers and thunderstorms. High near 65F. Winds NNE at 10 to 15 mph. Chance of rain 60%.