From publisher blurb:
THE ALMANAC of FANTASY WEATHER contains a massive 1,130 pages, charting the daily (and nightly) weather events over eight years for each of ten different "Swords & Sorcery"-type climates. Here, you will find cyclone lashed coasts, burning deserts, steaming jungles, howling northern wastes and more.
Adding weather to your fantasy adventure game campaign can be useful and fun, but most systems are either too simple to be satisfying or too complicated to be practical. The first volume of THE ALMANAC of FANTASY WEATHER gives you a total of 29,220 days of weather (yes, 29,220 - that wasn't a misprint), handily bookmarked by year and climate type. Each twelve-hour day or evening entry includes information on temperature (in Fahrenheit and Celsius) weather events - fog, thunderstorm, blizzard, sandstorm, 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 truly is 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 THE ALMANAC 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 fantasy roleplaying needs. Good travels! And may the wind be always at your back!