Def: Til April's dead, change not a thread.
In other words, you may think April, nice, pretty April with its blooming forsythia and green buds popping through, is your friend. Mais non. April is still winter in Paris. It's still cold, gray and unpredictable. Sunshine one moment, hail the next, and angry clouds rolling and wind blowing through non-stop.
I was going to take my winter coat to the dry cleaners last week but I'm happy I didn't. I wore it last night and, with a weekend forecast of rain, I'll keep wearing it; I will change not a thread.