After a while of playing this game I became... disgruntled over the weather. So I decided to collect some data to help me make some predictions. Keep in mind as you read these tips that they were all developed while playing at normal difficulty, I am not sure how other difficulties will affect things.

Here are some important things to note about canopy maintenance and the weather:

• There are 19 weather cycles that can affect the ripeness of your vines. Two cycles for every month starting in February and then the first cycle of November. I like to try to push my harvest until November as the yield increases at the end of each month so if you can make it to the end of October (assuming no rot, overexposure, and no overgrowth penalties), you will maximize your yield and gain a base value of 1.8 tons per tile with each adjacent forest tile adding 10% (yes, it stacks).
  
• Rain during the first half of February does not affect foliage growth, but cloudy and clear weather will affect ripeness.
  
• Rain will stop any ripening you would have gained from the previous month. However, I have noticed that if you trim right before a cycle change and that cycle happens to be rain, because the trim action is still executing the rain will not affect that plant for that cycle.
  
• If your harvest runs over a cycle change your final product's characteristics will be affected by that change.
  
• The weather is randomized every month so if you reload the year you will face a different weather challenge.

Below is a graph of weather patterns I've collected over 44 in-game years. As I gather more data, I will update. My goal is to get to 100 years worth of data.


The numbers 1 and 2 refer to the first and second halves of the month.

Some interesting things that I noticed as the data set grew:

• The weather almost never changes from Rain to Clear or vice versa without being separated by a cloudy cycle. The chance of this happening is 0.38%
  
• The weather prefers to change. There is about a one in 3 chance that any given weather type will repeat itself two cycles in a row. Below is a table of probabilities by season.
  
  
  
  This data was obtained by counting the number of times a weather type repeated itself (so 3 in a row would count as 2 repeats) and dividing by the total number of times that weather type occurred in the season. Nov 1st was used to determine if the weather from Oct 2nd repeated but was not included in the total count of weather occurrences (because we don't care about Nov 2nd). So if, for example, Oct 2nd and Nov 1st are both rain, then that would count as 1 repeat instance but only 1 total instance of rain. (Similarly, Jun 2nd was used to determine if Jun 1st would repeat, but was not used to affect the total count for the rainy season.)

Here is a data table if you'd like to see the probability for each weather type per weather cycle.



If you're a real big statistics nerd like me and feel like doing more math (!!!) here are a couple distribution numbers for you. They are an aggregated set of data across the 44 year study that counts the number of times that weather type occurred during the 19 time periods examined (the second half of November and all of December and January are excluded).



Happy forecasting!

Others on here have already posted guides on how to get 5 star wines from 5 star reviewers so I won't go into that. And if you get to the White Oak barrel stage you'll get two out of the three elements given to you in any event. So, the numbers below are basically just a reference sheet for what range of ripeness your grapes can be to enable you to achieve the perfect profile.

I got tired of doing the math every time I planted a new grape type or got a new crushing/barreling technique and I figured this might help some of you.



I don't have data for the special loam types yet. I will add as soon as I get around to trying to get one to grow.