Weather

This is untested.

How to deal with weather?  I don't want a complicated table, and I don't want to roll too often--like less than three times per day of travel, and averaging close to once per day.

This table is what I'm thinking about:

1-8	Calm (sunny day or clear night)
9-14	Partly cloudy
15-20	Cloudy
21-26	Precipitating (rain,  snow)
27-30	Turbulent (thunder, hail, fierce winds)

Method: Roll 1d6:  If it's even,  subtract the value  if it's odd, add the value. The table bottoms out at 1, and is capped at 30.  If there's a transition to a new kind of weather, roll again in 1d6 turns. Otherwise roll again in 1d6 x 8 hours, unless the value is over 20, then roll in 1d3 hours.

Why?: Weather goes for days at a time in a more or less steady state. If there is precipitation, it's preceded by clouds. Precipitation can last a while, but sometimes it only happens briefly (roll in 1d6 turns), then it's gone.

But how do you deal with someone who divines the weather?
Roll 2d10, subtracting the even faces, adding the odd.  Have the weather tend towards that value when the game calendar is about a day from the divined time by fudging the rolls if they're not close to on track.

Variations:
• Rainforests or rainy season: roll 1d8+20 during rainy periods (midday)
• Deserts or droughts:  roll 1d20-11

Concerns:
This doesn't cover amount of precipitation, or temperature.