Fall officially arrives Thursday. Today will definitely feel fall-like with cooler temperatures and possible moisture. Some areas could get significant rainfall, first west of the Continental Divide and then pushing on through into southeast Wyoming and the Front Range of Colorado. Snow is possible at the high elevations, but most likely in northwest Wyoming. Wind also kicks up, especially Friday. By the weekend, expect cool nights and comfortable days with temperatures around normal for this time of year. The weather looks ideal for getting out Saturday to celebrate National Public Lands Day. There are volunteer opportunities to pitch in to clean up trash, paint picnic tables and improve trails. Tossing a line or taking a hike would also be appropriate ways to celebrate our public lands.