This week has been in the low 90s, with afternoon clouds and/or rain showers knocking it down to upper 80s. Not too bad, especially once the constant 15mph breeze kicks in on my ride. A high dew point (70F) makes it pretty rough, but I just ride on.

It was worse earlier this month and in late June with 96+ temps in the afternoon.

And to answer the question, temps are not preventing any rides, but a thunderstorm may do so.