We have been (late) Jan, (early, mid and late) Feb and (early) March.
Feb is an excellent time to go crowd wise. Among the very best! Always missed Presidents day, so a day shopping may be an idea! Been there when there was a cheerleader invasion, but this did not increase crowds/ride waiting at all. Crowds are very low during Feb even when cheerleaders are in town!I hear they can be a little noisey at night in the value Disney hotels..
Some people think it a little cooler than they expected. Some mornings and late evenings may be a little cool, but shorts n Tess all day long. Some days were very, very warm.
Our next trip will be mid Feb! Have a great time