With clear skies and light winds, a frost advisory is in effect for Hardin, Logan, Union, Delaware and Licking counties, and a freeze warnings extends from Marion, Morrow and Knox counties northward. Temperatures will bottom out in the mid- to upper 30s, but some colder valleys will see patchy frost, and sensitive vegetation should be covered overnight.

High pressure building southeast from Canada is bringing a dry, chilly northerly flow of air. Warmer weather will be suppressed by adip in the jet stream.
Plenty of sunshine and moderating weather will return on Thursday, with a seasonable afternoon, in the mid-70s.
A cold front will approach from the west on Friday, with a corridor of moisture leading to a few showers during the day and mostly cloudy skies. Temperatures will reach the mid- to upper 70s in a southerly flow.
As the front approaches Friday night, a band of rain and a few rumbles of thunder will cross the state.
Indications are that the rain will end early Saturday morning, before sliding off to the east, which will bode well for the Komen Columbus Race for the Cure. The remainder of the weeked will be dry, with clearing skies and pleasant weather.
Forecast
- Tonight: Clear, chilly. patchy frost. Low 35-40
- Thursday: Bright sun, seasonable. High 75
- Friday: Clouds return, showers, rumbles. High 77 (58)
- Saturday: Showers early, clouds linger. High 69 (57)
- Sunday: Mostly sunny, milder. High 75 (50)
- Monday: Sunny. High 76 (52)
- Tuesday: Mostly sunny, warm. High 79 (51)