Heavy rain & even thunder possible Monday-Tuesday + A sharp cool down for Wednesday

After a nice and sunny Sunday, clouds are increasing from the southwest and will overspread the area later tonight. Temperatures right now are in the low 30's, and I expect temperatures throughout the night to keep rising. Temperatures by daybreak Monday will be in the upper 30's. Of course with the southerly flow, a few isolated showers will be possible for mainly areas west of the Wabash tomorrow. Highs tomorrow will be mild with highs into the low 50's in Evansville. The main rain event though, doesn't arrive until Monday evening and Tuesday morning.

The coverage in rainfall will be increasing at around midnight Tuesday, and will continue through morning. Rainfall amounts with this system will be rather significant, with amounts between 1/2" and 1". A few thunderstorms will also need to be mentioned with a deep low to our north. Temperatures will also be another big story throughout the day Tuesday. Temps will drop into the upper 30's by afternoon, after a early high in the 50's. Winds on Tuesday will add a nip into the air with breezy WNW winds at around 20 MPH. Tuesday night skies will clear out as high pressure settles in, which will drop temps to around 20 by Wednesday morning. Highs on Wednesday will be in the mid 30's with lots of sun.

On Thursday a few snow showers will be possible especially northeast of Evansville. Doesn't look like a big deal at this point. The more significant cloud cover will be located east of the city. In general I'm expecting partly cloudy skies with high temps on Thursday around 40 degrees. Clouds on Friday will increase ahead of the next system that will affect the area. Rain showers will breakout late Friday mainly south. High temperatures look to be in the upper 40's. 

Next weekend's outlook looks wet early, then mild late. I've added a chance a rain for early Saturday, which is the same system that might bring rain to the region Friday. High temps around 50 degrees. The ECMWF and GFS models at this point both agree that Sunday will be very mild. Both agree that temps will soar into the low 60's under partly sunny skies.

Rain to arrive Wednesday, Arctic blast by late week

Gradual clearing for Monday as we start out the work week. Clouds will remain locked in for the morning (maybe a few drops or flakes) and maybe early afternoon hours with gradual clearing from northwest to southeast. The sunshine will warm things up in the afternoon to highs in general around 50. Your location will be warmer/cooler depending on how much sun you'll see. After a chilly start around 30 Tuesday, things will warm up nicely into the low or possibly mid 50's by afternoon under mostly sunny skies. Clouds will arrive later in the evening ahead of our storm system that will bring rain to the region on Wednesday.

The light to moderate rain will arrive in the early morning hours on Wednesday and will begin to overspread the southern half of the area by mid-morning. I think showers will be possible through the afternoon, with southeastern areas having it the longest. Rainfall amounts in the Evansville metro I think will be around 1/3 of an inch, with heftier amounts south of the Ohio River. Clouds might break up in the evening, especially areas in southern Illinois. The area of low pressure will pass southeast of here, which is where most of the rain will be. After the rain stops, the Arctic air comes on in!

Thursday will be a true winter day. Highs on Thursday will only be around freezing, with gusty northwest winds & low clouds much of the day. Not to mention, light snow will be possible. Doesn't look like a big deal at this time. Thursday evening skies will clear out for Evansville and points to the SW as a cold night will be shaping up. Low temps Friday morning will be in the low 20's. Highs on Friday will once again be in the low 30's with sun for Evansville and points southwest & more clouds northeast.

The weekend looks dry at this point (other than a few flakes), with highs on Saturday in the low to mid 30's, and warmer on Sunday with high temps around 40 degrees.