Is it a little more random than real life? Yes. It seems like a lot more effort than it was, since I simply plugged in formulas, and then copied the list of random numbers into the correct column, which then auto-generated the daily temperatures. But since I’ve got that spreadsheet, I know the weather for any given day in the campaign. Sometimes I ended with a week where it rained every day, and some weeks there was a pretty good distribution, just like real life.įor wind speed, I did the same thing I did for temperature.īecause I’m running D&D 5E, I only really need to concern myself with particularly high and low temps, blizzards, and extreme wind speeds. Then I randomly assigned the precipitation days to each month. For temperature, the formula was 1=average temp -8, 2=average temp -6, 3=average temp -4, 4=average temp -2, 5-6= average temp, 7=average temp +2, 8=average temp +4, 9=average temp +6, and 10=average temp +8.įor precipitation, I generated one number that indicated if the precipitation that month was going to the average number, some amount below the average or some amount above the average. Then, I went to and generated 3 columns of random numbers from 1-10. I set an average temperature for each week in one column, an average number of days of precipitation for each month, and an average wind speed for each week. So what I did was set up an Excel spreadsheet with one row for each day of the year. There’s more of that stuff than most people realize. Or the week that there was a blizzard followed by four days of above-freezing temps with a ton of rain that wiped out all the snow. Like a week where every second day the temperature was well below the seasonal average, and the alternate days were well above the seasonal average. And, to be honest, there were a LOT of times that the weather seemed pretty freaking random. However, one thing I did was look up the weather in the Toronto are for two years, noting down temperature, precipitation, and wind speed. I’ve played around with a lot of weather generation systems over the years, and it’s hard to find one that works well.

Rpg random weather calculator