Scott Dorval

Tropical moisture fuels a thunderstorm threat with 40 mph gusts tonight before a cold front brings cooler, drier conditions to Idaho this weekend.

A strong low-pressure system will bring cooler temperatures and beneficial rainfall to the Treasure Valley and central Idaho mountains Thursday, providing relief to an active fire season.

Meta Description: The most significant rainfall since spring delivers fire season relief to Idaho while potentially impacting the Spirit of Boise Balloon Classic this week.

The heaviest rain of the event arrives tonight before a pleasant weekend. Hurricane Marie's moisture brings another round of showers Sunday night through the holiday.

Saturday delivers ideal balloon-flying weather for the Spirit of Boise Balloon Classic before an 80% chance of showers and thunderstorms arrives Sunday night through Labor Day.

Picture-perfect weather returns to the Treasure Valley with sunny skies and temperatures in the mid-70s to low 80s Tuesday through Thursday after last week's significant rainfall.

Stunning fall weather builds to 87 degrees Thursday in the Treasure Valley before a dramatic cold front drops temperatures to 67 degrees Sunday with mountain showers.

Thursday's 88-degree warmth will give way to a powerful cold front Saturday evening with gusty winds and a dramatic temperature drop to 65 degrees Sunday.

Saturday's 87-degree warmth will give way to a powerful cold front Saturday evening with gusty winds of 35 to 45 mph and a dramatic temperature drop to 68 degrees Sunday.

Saturday's 86-degree warmth gives way to a powerful cold front Saturday night, dropping temperatures 15-20 degrees below normal Sunday with gusty winds and mountain showers.