Weather and movement rates

[Zane Smith]

I can't seem to find any rules concerning the effect of weather conditions would have on overland movement rates. Surely, if you're out on the trail and it's been raining for a few hours, the ground is going to be muddy and slow movement, right? Anyone have the rules for this?

[Ryze Kuja]

Check out these pages: Weather Effects

Movement, scroll to: Table: Terrain and Overland Movement

Exploration & Movement

Survival Skill

There is no real definitive answer because there are a lot of variables, so this is going to come down to a GM's call based on the terrain and variables present.

You could consider that rain = poor visibility, so that's x2 movement per square. You could also consider Muddy as difficult terrain so that's x2, but then overland movement rules like "Trackless" or "Road/Trail" come into effect depending on how long its been raining and how defined the trail is, so that also increases time, but its dependent upon the type of Terrain they're in as well.

Heavy rain/wind is going to affect Perception and Survival checks to follow poorly defined trails too, because its entirely possible to get lost or lose a trail with a bad Survival roll.