Source GM Core pg. 98
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.
Category | Temperature | Fatigue | Damage |
|---|---|---|---|
Incredible cold | -80º F or colder (-62º C or colder) | 2 hours | 4d6 to 6d6 cold every minute |
-79º F to -21º F (-61º C to -29º C) | 4 hours | 1d6 to 2d6 cold every 10 minutes | |
Severe cold | -20º F to 12º F (-28º C to -11º C) | 4 hours | 1d6 to 2d6 cold every hour |
Mild cold | 13º F to 32º F (-10º C to 0º C) | 4 hours | None |
Normal | 33º F to 94º F (1º C to 34º C) | 8 hours | None |
Mild heat | 95º F* to 104º F* (35º C to 40º C) | 4 hours | None |
Severe heat | 105º F* to 114º F (41º C to 45º C) | 4 hours | 1d6 to 2d6 fire every hour |
115º F to 139º F (46º C to 59º C) | 4 hours | 1d6 to 2d6 fire every 10 minutes | |
Incredible heat | 140º F or warmer (60º C or warmer) | 2 hours | 4d6 to 6d6 fire every minute |
Adjust temperatures down by 15º F (9º C) in areas of high humidity