Feb to late May is the windy season. It's not windy every day, but there are many days with 40 kt+ winds.
June and september are usually clear and calm, but hot.
July and August are perfect until 11 AM. After that, turbulence and storms make it unpleasant or unsafe.
Oct - Jan is typically clear and calm with 1-3 day storms hitting every 2-3 weeks. October and Nov have milder temps and gorgeous fall colors. Dec and Jan are just cold.