I really like Jim Patton's 100 point rule for climbing.
Add the humidity(%) and the temperature (degF) and IF <= 100 THEN it is a good day for climbing.
However, I believe that if you climb on a bunch 140 point days in late august, for example, then you are primed for the season. When the weather changes and you get a 100 point day, then it is time to send and everything feels easy.
It may be ugly and it may be painful, but what else are you going to do on the weekends anyway? Mow your yard? Go to an arts fair? Break out your kneepads and set up shop at the bus station's bathroom?
Doesn't sound like a valid rule to me. You're not going to see a relative humidity around here below 40 percent. So this rule means you wouldn't be climbing in weather that is "hotter" than 60 degrees, and even then, only if the humidity is unusually low. This rule probably works better out west, but doesn't sound good here.
Wes wrote: I am thinking this weekend was more like 170+.
Some prime summer sending weather. I usually could care less what the temperature is, as long as someone else is willing to climb. Though, mid 50's and sunny is my favorite