Had to abort planned Wachusett Mtn 2nd summit attempt of season (1st successful summit last Friday), as high cloud deck moved in faster than expected and thus didn't warm up as much as I thought ! Ring around sun early aft'n. Just one yellow butterfly seen today; at Thayer Pond just west of the rail trail crossing of Rt 56, also saw a male scarlet tanager or northern cardinal, and 5 pond turtles all in a line sunning themselves on a fallen tree trunk which had come to rest just above the water's surface. The turtles were not bothered by my passage on the rail trail about ten ft. above and away from them at speed, but when I turned around and stopped to get a better look, 4 of the 5 jumped off the trunk in unison, but the 1st one in line waited, and waited, until I moved to resume my ride before bailing out. Lunch at Princeton town ctr coffee/bake shop: bowl of eggplant minestrone soup, banana, and slice of banana bread. Air temp 50 F at start (waited all morning for temp to warm after early morning frosts!), only warmed to 58 F mid aft'n, dry air (dew pt 22 F), winds variable (but always seemed to be a headwind) less than 10 mph (started out NNW and ended SSW as high pressure moved by overhead).