I'd say you have at least another 4-6 weeks. Like others say as the buds get bigger and pistils begin to change color look for cloudy crystals with jewelers loop.Lil update.
Amber isn't a degradation of thc. That's one of those misinterpreted forum things that spread like wildfire and everyone regurgitates it as fact.If most trichs are amber your bud has already passed it's prime. Still good and still better than pulling early but unnecessary.When they are covered - covered - in trichs that are fat and clear and then they begin to turn it's time! Amber is degradation of the THC.
You have nothing to worry about with cold temps. I've had many plants out until end of October into November in NY state. Until there is a frost you will be okay.I'm just worried it might get cold outside I currently stay in southern ct