From the latest forecast someone posted on Facebook this looks to be pretty close.
As I do every year, here's what I predict for this year:
Windy and Warm... kinda like last year, but..
Highs during the day during pre-fest: low 60's to mid 70's.
Lows during the night during pre-fest: mid 40's to low 30's with a chance of frozen water jugs.
Highs during the day the week of festival: mid to upper 70's to low 80's.
Lows during the night the week of festival: mid 40's to low 50's (but it'll feel colder).
Windy conditions during the week, with possible gusts in the 20-40 mph range.
Chance of showers: 30% to 40% early in the week to 10% to 20% late in the week, but mostly dry.
Note: This a a "prediction" not a "forecast".