According to ColorFabb nGen has a temperature resistance of 85° C. I have been using it a lot for the last few months making parts that are exposed to temps up to 130° F for periods of 1-4 hours and have not seen any distortion yet. I have not test it for longer periods at a time though.
I have recently tried the new ColorFabb HT recently which they state resists temps up to 100° C. I haven’t tested the heat resistance yet, but the layer adhesion is very good and it makes very strong parts. The down side is it likes to warp similar to ABS, but I raised the bed temp and that has helped quite a bit. Also colors are limited.
Maker Geeks has just released a “dishwasher safe” PLA which I have not tested yet. They claim it is temp resistant to 125° C, but parts must be annealed after printing to achieve maximum temperature resistance. This means you have to bake the parts in an oven at 100° C (212° F) for 5-10 minutes. They do offer many more colors though.