Can I Treat Weeds with Roundup® For Lawns Products When It's About to Rain?

There's no need to let a few clouds ruin your weed elimination fun.

It all depends on how you define “about”

Roundup® For Lawns is rainproof in as little as three hours, so there’s no need to let a few clouds ruin your weed killing fun. Make sure the temperature is between 45 and 90 degrees Fahrenheit* for best results.

*Do not apply to bermudagrass when daytime temperatures exceed 85 degrees Fahrenheit.