This is a python script that generates weather exactly* the same as is described in the 1e Wilderness Survival Guide Appendix. The only thing that isn’t added is the effect of humidity on any given day by the precipitation on the next day. Also contained in the repo are pre-generated files for all combinations of region and biome for 5 years. You shouldn’t need to even download the program if all you want is weather. The year starts in on the first day of Spring and is 12*28 = 336 days long.
The output is in .csv because it’s what I’m most used to.
the program generates day-by-day. this is the day in question. starting at 0
the day of the week. the program uses Thyatian weekdays from Mystara. 7 day weeks.
the month. the program uses Thyatian month names from Mystara and starts generating in Spring. 12 months in a year.
the day within the month. 28 days in each month.
the high for that day. this occurs typically just after noon. degrees F.
the low for that day. this occurs typically just before dawn. degrees F.
a description of the precipitation for the day. this is the total for the day and can happen at whatever time the DM wants.
this is the %humidity
the windspeed in mph. This is the max that any gust will be throughout the day. the windspeed at any time is typically less than half this value.
the direction the wind is coming from. Prevailing Direction is the direction wind typically comes from for the given area.
this is the effective high temperature considering humidity and windchill
this is the effective low temperature considering humidity and windchill
if there is any special weather it is indicated here
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