From publisher blurb:
Adding weather to your fantasy adventure game campaign can be fun, but most systems are either too simple to be satisfying or too complicated to be practical. SEVEN YEARS of FANTASY WEATHER gives you seven years of realistic weather for 2556 days. Each twelve-hour day or evening entry includes information on temperature (in Celcius and Fahrenheit) weather events - fog, thunderstorm, blizzard, etc. - amount of rainfall/snowfall, occurrence or possibility of lightning, wind speed, wind direction, phases of the moon, effect on movement rates and chance of getting lost. It's an almanac for the fantasy gamer. No more annoying die rolling or consulting an app or online program to generate a random or patternless result. With FANTASY WEATHER you can see all of it at a glance. Whether you're using Dungeons & Dragons 5e, an OSR retro-clone or any other current or past game or mechanic, this is the last word on weather for your roleplaying needs, This second volume simulates the weather patterns of Medieval Iceland and the climate described in the Sagas. Good travels! May the wind be always at your back!