I can't think of a good reason to worry. 100°F seems like a big change from 70°F, but it isn't. Temp/Pressure ratios are actually calculated in Kelvin, which is like centigrade but with a starting low measurement of -273°C. Centigrade or kelvin units are almost twice as big as F so we are talking about less than 20 units of change or an increase of 20/273; almost nothing. I am more concerned about leaving pressure in your tank from the water that is in the compressed air. Humidity is far lower than where I am now, but here, I can expel lots of water from a long sealed tank. A relative gave me an old compressor. When I emptied it, I found more than a quart of water that had been rusting the tank for years. I threw it away.