With a calm that precedes what many seek as a respite from sweltering summers, the National Weather Service has forecasted a calm and sunny spell for the Ohio Valley region. The brief chilly interlude makes room for a gradual warming trend, with clear skies promised to dominate the early half of the week, per a statement released by the National Weather Service office. NWS reports a high-pressure system extensively laying claim to the valley today and hanging tight through Monday.