Bandit Signs and RAIN?

[E J]

It's Friday... time for the bandits to come out! I was planning on putting out my first campaign of bandit signs, but I see thunderstorms on the forecast tonight and tomorrow. Does this ruin the signs or reduce their effectiveness since people will be distracted by the weather while driving? I very much want to put them out and start getting calls, but these are my first bandit signs and I can't really afford for them to go to waste due to weather. What have you guys experienced with this?