Weather Matrices for Real Locations [Simulationism]

[Celebrim]

I like weather generation systems, but for the last 20 years or so rather than programming one or rolling the dice at the table I just look up the weather at some real-world location and that becomes the weather for the day in the game. I can track things down to the hour that way.

The internet changes things.

 

[el-remmen]

Back when I cared about such things, I just went the Farmer's Almanac route, and used historical weather data. Nobody's going to notice if you cheat and use November 18th's weather data from 1986 for November 18th, 2032.

I used this method for years.

 

[aco175]

Similar to what @Milieu said, just add a % in the chart to use the next month or previous month to get something more extreme. Although I do like just having 4 seasons with 3 months per chart instead of 12.

I'm a big advocate of simpler over complicated. One chart per kingdom is better than 4, which is better than 12. Depends on that you are after in terms of more realistic or how it plays at the table. I tend to just make up the weather if it is even needed in the game that night.