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The best solution I ever came up with was finding an equivalent real-world region that had weather records online.
"Hmmm, the game date is the equivalent of December 24th? Freezing rain during the night. Wow, that sucks."
It can take some searching -- the last time I did it, I think I actually ended up using a Danish DB, of all places -- but it's really easy once you find a source, and the verisimilitude can't be beat.
(On the other hand, yeah: no magical weather effects, unless you tack those on.)

Boothbey |

I just finished creating a website to automatically implement the rather lengthy rules found for weather generation in Ultimate Wilderness. Try it out and feel free to give me some suggestions and/or report any bugs that come up:
www.FantasyWeatherGenerator.com
That is awesome and I will be making use of this!

Ryze Kuja |

I just finished creating a website to automatically implement the rather lengthy rules found for weather generation in Ultimate Wilderness. Try it out and feel free to give me some suggestions and/or report any bugs that come up:
www.FantasyWeatherGenerator.com
Wow, love this. It's awesome! Thank you so much for taking the time to create this!

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The best solution I ever came up with was finding an equivalent real-world region that had weather records online.
This was my preferred way of generating weather too, but this...
I just finished creating a website to automatically implement the rather lengthy rules found for weather generation in Ultimate Wilderness. Try it out and feel free to give me some suggestions and/or report any bugs that come up:
www.FantasyWeatherGenerator.com
...is awesome and will be using from now on. Thanks cap708!

Bellona |
2 people marked this as a favorite. |

@ Cap708: Great work, and thank you for the link!
One "quality of life" suggestion: some way to convert the final temperature (with and without wind-chill) results to the Celsius scale. (Maybe in brackets after the Fahrenheit numbers?)
(I can convert several forms of the Imperial/whatever scale to metric on the fly, but climate-based temperature conversions have always made me want to tear my hair out in frustration.)
Also: the ability to print it out (b/w printer-friendly) would be nice for those of us who don't go on-line while running games. Possibly with the side-bar notes at the beginning or after the weather results.

cap708 |

Thanks to everyone for the feedback so far. In the future (which may take a few weeks give my RL work), I plan to do the following:
1. Add an option for 31 days an output (instead of 30 for months)
2. Create a dropdown menu to select Celsius instead of Fahrenheit
3. Create a dropdown menu to add support for other flavors of D&D, in terms of their lingo and rules for various inclement weather.
Regarding supporting other editions, the core generation system need to remain from Ultimate Wilderness, obviously, or it would be like writing multiple additional programs, which is beyond my current plans. The current output already required over 3,500 lines of code, mainly because I suck at coding, but there you have it :) (in all fairness the UW rules for weather generation are extremely complex). There is also a loop in the logic regarding fog and winds that I don't think the creators caught: winds can invalidate fog, the original presence of which created heavy cloudcover, and heavy cloudcover affects temperature which can change how precipitation events manifest in the first place. Anyway, I've done my best to patch up little things and to have it all make sense. For the fog/winds loop, I closed it by keeping heavy cloudcover present (as sort of an inert precipitation event) even if fog is invalidated by wind.
Here is the URL properly linked:
I plan to post to a few older forum threads regarding weather generation, which I hope is OK to do.

Derklord |

2. Create a dropdown menu to select Celsius instead of Fahrenheit
Yes, please! I know that in typical american arrogance, Paizo only uses imperial measurements, but for the 95% of human population who live in the nations where the metric system is used, a switch (for temperature and wind speed) would be very welcome.

cap708 |

Thanks everyone for the positive feedback by email. I have found the time recently to work out more of the bugs, improve formatting slighting, include support for generating 31 days, and (most significantly) include support for the metric system!
Thanks so much for all the support and encouragement. If you have any further suggestions for improvements, do let me know.