Pace - unless it is freezing rain which requires specific conditions to form and is well forecast, taking off into rain is not a problem. You need to be in cloud (if that is what you want to call visible moisture) below 0 degrees to be in icing conditions.
Snow is not visible moisture it is ice.
Crab

who is saying snow is visible moisture? certainly not me! taking off in rain at the wrong temperature most certainly is a problem in or out of cloud.
Give me nice puffy snow flakes any day of the week
You will get rain out of clouds as well as in clouds. That may fall as rain as you climb through the clouds but then when the temp drops to zero that rain will start to form as ice on the airframe.
Pace