I try very hard to go up at least once a week, and this tends to be possible (with an IMCR or IR) even in the worst weather, from a hard runway airport.
The last few months have been among the worst I remember though, and while I have managed to get up, I haven't done any long trips since before xmas.
It's harder for owner pilots because one cannot just leave the plane sitting there for weeks, due to engine corrossion issues.
Average 150hrs/year.