So many benefits in 'sucky weather' :) True!
Though you must wager a wet coat, wet palette, wet everything, still my best sky paintings have been created in enduring these things.
Sometimes you're lucky: just when it starts pouring or snowing or just when the winds go crazy your painting is done. Exhilarating job!
In this case, I could capture the great sky before the blue sky appeared again, that's also good.