Clear skies and calm winds will lead to another cool night across the state. The National Weather Service in the Quad Cities has issued a Frost Advisory from 2am until 7am Tuesday morning for Dubuque, Delaware, Jones, Jackson, Clinton and Scott counties. Temperatures tonight will drop into the lower to middle 30s in these areas, which may lead to some light frost across these areas. This will likely be the last night of frosty readings across the state until the fall.