We had a very mild weather till the end of January (much milder than usual). Then there was a quite sharp change from temperatures around zero C to extreme cold. Because of that this spring was a bit delayed, with last bits of snow melting away only a few days ago (in shadowed places some ice crust still can be found).

I think there's definitely "something" (maybe not a global warming per se), that screws with the weather. Seasons "schedule" is not what it used to be more often than not.