It'll be another calm and clear day for Montana, as high pressure prevails. Tomorrow will usher in some changes, however, as a small disturbance and cold front bring cooler air and a chance of thunderstorms. Thunderstorm activity will be stronger in southwestern Montana for Thursday, followed by more widespread rainfall on Friday.
The holiday weekend will start out with thunderstorms, but Saturday and Sunday will be sunny, dry, and warm. Monday and Tuesday will bring on chances of isolated thunderstorms, but these will not be washout events. Overall, the holiday weekend will be a dry one!