Picking Time?

[NCWC]

I have a winery in NE Ohio and I have to source my fruit.
I have an opportunity to go pick for ourselves.
The fruit is not ripe in my opinion and need advise
Pinot Gris is 18 brix 3.05 ph
Chardonnay 18-19 brix 3.03 ph
Cab Franc 18-19 brix ph 3.25
The temp here will be mostly sunny highs in the 70's lows in the 50's for the next week
If I wait a week will I pick up a brix or so? two weeks?

 

[CDrew]

To me, they do not sound ripe. But I don't know how ripe things get in that part of the country. I would not pick yet if there's a chance they will ripen more. What do the growers think?

But as they are, I'd avoid and wait unless you have no other options.

 

[NCWC]

My question is, How much do you think the brix will increase in a week?

 

[wood1954]

From what I’ve read and experienced about 1 Brix per week with good weather, taste the grapes and see if the seeds are turning brown, the grapes my be ripe and you will have to add sugar.