There were some muddy areas on the trail/road but only in the first mile.
The sunshine lasted until about Trestle #8 when a blanket of gray gloom covered the sky. With the sky out of commission, I turned my attention to stuff along the trail like colorful lichen,
wet rock,
and the junk car (almost like one of Don's hikes off Palmer Mill Road

By the time Trestle #4 took me across a pretty energetic Swale Creek,
the sun was starting to crawl out from behind the gray gloom,
and I could once again see my feet.
About 6.5 mi in, you come to a wide spot shown on some maps as "Swale" - possibly a siding, maintenance area, or watering stop on the old Lyle to Goldendale railroad.
I'd come down to "Swale" from Harms Rd on a previous hike, so this was my turn-around point. Thus, after a short lunch, I headed back - in pretty much full sunshine! Even had to take off a layer!

Just before reaching the TH, I looked back and saw that the moon was still up.
The warm and sunny second half of the hike redeemed the gray and gloomy first half, making for a really nice day on the trail. No flowers yet - lots of Stellar jays and squirrels, one scree of a Red-tailed hawk, and a grumpy Bald eagle in a tree. No people. 13.5 mi, 600' EG.