my friends and i were out doin some gtech runs tonight. it was kind of warm out, like around 80 degrees. the weekend before we were doin gtech runs in about 50 degree weather. we noticed the times were inconsistant with last weekends. i was wondering what the et time difference would be from the temp incline? like on an average

 

temp is one variable you have to look at, and so is humidity. and humidity can have many different readings at one temp, depending on the day. for example, your times might be good on one 80* day, but be shitty on another 80* day due to the change in humidity. obviously, higher the temp the more water vapor the air can hold. but this is not always true. it depends is there is a low/high pressure system in your area. air mass will either converge or diverge, and those air masses with be airid/humid. plus some air masses will contain great amount of water vapor if it blew over a large body of water. that is why buffalo ny gets some much snow because of the water vapor it picks up from lake erie and ontario. i'm sure you get alot of humid days out there in cali due to the pacific. obviously that will be bad for your times because humid air is less dense than arid air. with i'm sure someone has an equation for your numbers. sorry for the BS i just wrote. but it is all true and it probably won't help for what you are looking for

 

I've seen cars run well over 1/2 second slower in high heat and humidity conditions at the Drag strip.