Temperature

Often, temperature doesn't impose enough of a mechanical effect to worry about beyond describing the clothing the characters need to wear to be comfortable. Particularly hot and cold weather can make creatures fatigued more quickly during overland travel and can cause damage if harsh enough, as shown in the Temperature Effects table below.

Appropriate cold-weather gear can negate the damage from severe cold or reduce the damage from extreme cold to that of particularly severe cold.
Temperature Effects
CategoryTemperatureFatigueDamage
Incredible cold–80°F or colder2 hoursModerate cold every minute
Extreme cold–79°F to –20°F4 hoursMinor cold every 10 minutes
Severe cold–21°F to 12°F4 hoursMinor cold every hour
Mild cold13°F to 32°F4 hoursNone
Normal33°F to 94°F8 hoursNone
Mild heat95°F* to 104°F*4 hoursNone
Severe heat105°F* to 114°F4 hoursMinor fire every hour
Extreme heat115°F to 139°F4 hoursMinor fire every 10 minutes
Incredible heat140°F or warmer2 hoursModerate fire every minute
* Adjust temperatures down by 15° in areas of high humidity.