I understand this only too well.
The way I look at it is this, no life gets to be rain free from a set point onwards, and the first signs of of a raincloud or even a sudden shower are not signs that the unexpected sunny period is over and it's back to thunder from here on.
I can either turn my face up to the sun and enjoy the warmth in between hiccups, or I can fail to enjoy it by looking forward to the next batch of drizzle that I'm sure i can see lurking in the horizon called my overactive imagination..
I had a hard time with that at first, cos part of me was convinced that if I enjoyed it that would be a sign for "the Gods i don't believe in" to turn on the tap as punishment for thinking i was allowed to have and actually enjoy good times.
But got there in the end.
And big fat hug, you have had way more than your fair share of rain already and probably like me regard it as "normal", so its not surprising you find all this sunshine scarily unusual and rather unnerving. But you'll cope better than most with any future problems because you've had practise, basking a little now won't eliminate your "shit storm" skills, cos it is like riding a bike. So it is OK and safe to enjoy what you have.
May all your future rainclouds be little ones. And remember you have had the years needed to build an "coping" umbrella, closing it up and putting by the door when you don't need it won't make it disappear or break.