The Lee County Fair kicks off Thursday with gates opening at noon, and continues through the weekend. If you plan to head out opening day, you'll want to keep a poncho or umbrella handy. Thursday looks to be a bit of a soggy day at times, however, the forecast gets better into the week.
A passing cold front will sink south through northern Illinois Thursday morning, this will act as lift in the atmosphere to help fire up scattered showers and a few storms. With instability and shear lacking, we are not expecting a severe weather threat. Also, in the upper levels of the atmosphere there is not a lot of forcing, so its hard to pinpoint timing of the rain. With the cold front nearby expect mainly scattered showers and storms through Thursday afternoon. Winds will turn to the northwest, and this will bring temperatures into the upper 70's and low 80's for highs.
Friday will be a bit drier day, but that boundary is still stalled nearby and could fire up a few showers. Saturday and Sunday look great with temperatures in the low to mid 80's and a little more sunshine. Can't rule out an isolated shower on Saturday behind a departing low pressure system, but don't expect a big impact to your day.