hot in the southwest. >> 97 phoenix. 87 in sacramento. 71 in portland. a wet 60 in fargo. 57 in chicago. upper 50s from boston to baltimore. 85 in miami. and 75 in new orleans. well, how about this here in new york it was a gym class that they will soon not forget thanks to one of the hottest singers in the world. ♪ ♪ let's go ♪ >> oh, my gosh. >> let's just looking, i have nothing to say. yes, indeed, the one and only beyonce paid a surprise visit to a harlem middle school yesterday sending students there into a frenzy. uh-huh. the kids had been practicing the moves to beyonce's new video made especially for the first lady's antiobesity campaign. peggy taught me that. >> i was going to say, are you going to make that noise more? keep it to yourself. beyonce has joined in dancing side by side with the students.