If a wise old sow is leading the pack, I've seen them use the rain to raid spots they may normally shy from. Same way the wise ones use the moonless nights to their advantage. They get smart after a few of their relatives get shot and may tend to shy away from those places they deem dangerous. It can be a conflict for them, the places they get shot at may be the best feed. The adolescents are more likely to push the envelope, take chances and cut corners. The very young stick with the old timers and the old timers have survived for a reason, they tend not to be so impulsive.

Also depends on how they have been feeding, A rule of thumb is a Hog needs forty times it's body weight measured in calories a day. A hundred pounder eats 4000 calories a day. They have a lot of eating to do in 8-9 hours of darkness, depending on what they are eating. And how much they have been forced to move.

I like hunting in the rain, noise discipline isn't as critical, the rain makes a lot of background noise. And the rain can beat your scent down some, depending on the wind. They may also come out to feed earlier and head back to cover later in the morning.

Though I have to say, it works both directions, I tend to ambush them between their daytime lair and where they are feeding. I tend to hear them coming before I see them and have a little time to get set up and a likely direction. They are often on me and gone before I have a chance to react, in the rain. I don't take low percentage shots, if I can't get a good sight picture I don't shoot.

Feeders aren't allowed here, though small bait piles are. They stop and root for a few minutes but don't stop to seriously feed.