Cool weather experience

Just experienced a similar weather event earlier this week in western NY, the temp went from low 30's*F to low 50's*F within about the span of about an hours time. I was changing a head gasket on my 5.9 Cummins , outside after work because of a nice little warm spell predicted in the forecast, all of a sudden the wind picked up with a nice "warm" breeze and anything metal had a bead of sweat on it like a soda can on a warm summers day. My cylinder head parts which would normally be protected by valve covers were now covered in this gooey white coating of atmospheric sweat and used, black diesel motor oil, it was strange to say the least but that's winter for ya.
Weather can be extreme around here, I've seen it go from being 70*F one day to getting 2 feet of snow the next day, this was the "October storm" of WNY in 2006 if you want to look it up.