Spring and Fall yield some of the best photography because of the dramatic changes in temperature. When it gets down to below freezing at night and then warms up in the afternoon to the mid fifties the change can create some great atmospheric effects including steam. With the addition of some clouds the results can be spectacular.
A couple of things to think about when working with steam, the biggy being never to point your lens directly into the steam. If that steam hits the front element the combination of the cold metal and the hot air and then right back to cold can warp the front element or a NC filter if you have one attached. Next really look for interesting subject matter to put with the steam. Steam can be very overpowering just like snow can be because of the more solid color it provides. Adding in that extra element can help make the steam pop even more. Besides those basics just have fun because the options are endless.