I did Tom via the Horton Lake the last weekend in June (24-25). The trail was clear to the lake, though the creek was running high and had flooded the meadows where the crossing is. If the wooden bridge wasn't there, we were looking at a chest-deep ford. It may have subsided some by now, but judging from the snow on the surrounding slopes the water could stay high for at least another month.
The switchbacks above the lake were clear in the beginning, then we had to traverse across a number of fields as we reached the ridge with the metal rod. The old road was mostly under a solid, sun-cupped cover all the way to Tungstar Mine. From there, we were able to stay on snow in one of the chutes up to about 13,000 ft, bypassing the loose crap the mountain is infamous more. The final scramble to the summit was snow-free and the rock more solid.
Getting to the trailhead requires sturdy 4WD with high-clearance. We piled 7 people in a Ford F-150 4x4 because that was our only vehicle that would make it all the way. Past the cattle guard the road gets really rough, and it's particularly horrendous in the last mile or so. I do not recommend anything less than a truck attempt getting to the end of the road.
