I find that here the pollen ripens when it wants to. This morning all the flowers were wide open but the anthers had not opened on the ones in the shade and the ones I wanted to use I picked the bloom and stuck in the sun to open. Sometimes though there will be the ones that open readily in the shade and then there are others that it depends on the temps and won't open when it's too cool until the sun has warmed it up good. But most of the time our blooms are fully open before the anthers open.
Is it really 55 degrees in your zone 9b? Here we have cool 55s and warm 55s. It is so weird how our weather is, sometimes at 55 it will be colder than a day that was 45 degrees. I imagine it has to do with the humidity but it is still weird. Anyway I would think that it doesn't really matter when you pollinate (or at what temp) because the pistil will be ready whenever it is ready and if the pollen is already there on the pistil then it will save you time going back to pollinate it.
