Should my mural be alright if I finish it during the day and there’s chances of storms later in the night?

So this Sunday I’m trying to work on my mural up in Columbus, OH. There’s no rain until 9PM and then it becomes a 40% chance. Should my mural be alright if it rains later? I’m using Montana BLACK brand spray paint. I hope my mural wouldn’t be ruined. I’m fairly new to murals as well so I’m hoping a fresh coat finished a few hours before the rain starts wouldn’t get ruined by rain.