Decades ago, it was more common to hear radio weather forecasts with predictions such as "a high in the upper 70s" or "a low in the lower 60s."
However, two different program directors that I know advised their announcers to pick a temperature in the predicted range and call that the high or low temperature. Both of them would have wanted their announcers to condense the ranges in the previous paragraph to "a high of 78" and "a low of 62."
Given that weather forecasts are approximations in the first place, that's sound advice.
