I would second that.
I left my .22 in the truck overnight a couple of days and went to the range (indoor), wouldn't strike hard enough.
Took the bolt out and warmed it up in my hands for a while and worked it.
Still was quite fussy for a while, intermittent ftf, had to baby it a bit until it warmed up.
Might want to disassemble the bolt, clean and check it anyways, and oil with some very light oil.