Some of the information I've come across says that the cells in the tomato
>plant that form the pigments do not function well in extended temperatures
>above 83 degree F. They simply wont ripen. This may be false information, >or
>there are varieties breed as workarounds. Still you said temps were in the
>80s...high 80s? Are most people having this problem in higher temp zones,
>experiencing a heat wave, or just impatient?
Won't ripen above 83? Wow! Someone should have told the many, many thousands of tomatoes my grandparents grew for market in eastern Washington. It was a rare day, indeed, that the temperature was below 83. Tomatoes are more of a hot weather plant than a cool weather plant, or so it would seem.
I hope that wherever you got that information hasn't given you anything else on which you might base anything really important.
Now if you have extended hot weather and don't they don't have adequate water, you will have problems, but you'd also have problems in cooler weather without adequate water.
Sorry, just be patient. They will ripen. Didn't someone on this group say a watched tomato doesn't ripen?
Glenna