AFTERNOON – OVERNIGHT: A cold front has moved across most of Illinois this morning and will continue to do so through over the next few hours.
Through the morning hours the front will continue southward across zone 6. As it does a few rain showers can’t be totally ruled out, but anything that does form will be short-lived and light in nature.
By 12-1 PM the front will be exiting to the south of Illinois. Overall, the afternoon looks to be mostly clear with perhaps some scattered clouds.
Through the evening we will see a mix of some clouds and sun. However, I do think sunshine will be more prevalent, especially across zone 6.
Through the overnight, skies will become clear to mostly clear, winds will slack off, and cold air will continue to work in. This will be the set-up for some very chilly overnight temperatures across the region.
Lows overnight into Tuesday will fall into the mid 20’s north to mid 30’s south. For this reason, there is a freeze warning out until 8 AM CDT Tuesday morning for a large portion of the forecast area.
TUESDAY: An area of high pressure will move across the forecast region on Tuesday. This will be in control of our weather through at least mid-afternoon.
However, by 4-5 PM the high will move off to the east, as it does some rain showers could develop later in the afternoon. I think better chances of some isolated showers would be across northern zone 6 and zone 7.
Highs on Wednesday will be in the mid 40’s north to mid 50’s south.
Through the evening into the early overnight isolated showers will remain possible across northern zone 6 and zone 7. By 1 AM Wednesday only a few light showers persist across the forecast area.
Through the overnight Tuesday into Wednesday the area of low pressure will move to the regions north. As it does, it will bring a trailing cold front across Illinois. By 3-4 Am rain and perhaps an isolated storm will be moving into western zone 7 and perhaps northwestern zone 6.
Lows overnight Tuesday will be in the 40’s across the area.
WEDNESDAY: By 7-8 AM Wednesday morning the cold front will be in place across northwest and western portions off Illinois. Along and ahead of the front, areas of rain and perhaps a t’storm will be ongoing across both zone 6 and 7.
By 10-11 AM Wednesday the cold front will continue moving to the east across Illinois. As of right now, it appears most of the rain will come to an end across the zones around this time as the front moves to the east into Indiana.
By 1-2 PM the front will be to the crossing into Indiana and only some isolated to widely scattered rain showers will linger.
Through mid-afternoon and into the evening Wednesday, only a few rain showers will remain across the forecast area. In fact, once the front passes there could even be some clearing, especially across zone 6.
Highs on Wednesday will mid 50’s north to mid 60’s south. With the front moving across the area, winds will be strong at times. Wind gusts of 35-45 mph will be possible.
Overnight Wednesday into early Thursday an upper level piece of energy will move southward across Illinois.
While I think the environment will be pretty dry from the passing of the cold front earlier in the day, a few isolated rain showers will remain possible.
Lows Wednesday night into Thursday will be in the mid 30’s to mid 40’s.
THURSDAY – FRIDAY: An upper-level trough will sink into the forecast area Wednesday night into Thursday. This trough will help keep cool, unsettled weather in the forecast for the end of the workweek.
Through the day on Thursday some pieces of upper level energy will be moving through/around the zone forecast area.
Upper level energy combined with some instability will be enough to spark some isolated rain showers across zones 6 and 7 through the daytime hours Thursday.
Highs on Thursday will be in the mid 40’s to mid 50’s. Winds will be breezy, with wind gusts up to 25 mph.
Any showers will fade out once the sun sets Thursday evening/night. However, the main story will be the cold temperatures that will once again be in place. Lows Thursday night into Friday temperatures will again fall into upper 20’s north to upper 30’s south. So there is the potential of yet another freeze in areas.
Friday we will see more of the same as the upper-level trough remains in place. Another upper-level disturbance will move across the forecast region.
This will bring rain showers chances back into the forecast by early afternoon on Friday.
Highs on Friday will remain cool with temperatures in the mid 40’s to mid 50’s. It will feel cooler than that even as strong winds will once again be in place. Wind gusts of 30-40 mph will be possible on Friday.
7 DAY FORECAST
TUESDAY: INCREASING CLOUDS FROM WEST TO EAST. 10% CHANCE OF ISOLATED RAIN SHOWER FAR WEST. HIGHS IN THE MID 40’S NORTH TO MID 50’S SOUTH. WINDS FROM THE SOUTHEAST AT 6-12 MPH, GUSTING TO 20 MPH AT TIMES.
TUESDAY NIGHT: MOSTLY CLOUDY WITH A 20% CHANCE OF RAIN WEST. LOWS IN THE LOW 30’S NORTHEAST TO UPPER 40’S SOUTHWEST.
WEDNESDAY: MOSTLY CLOUDY WITH A 50% CHANCE OF RAIN AND A FEW STORMS. HIGHS IN THE MID 50’S NORTH TO MID 60’S SOUTH. WINDS FROM THE SOUTHWEST TO WEST AT 10-20 MPH, GUSTING FROM 35-45 MPH.
WEDNESDAY NIGHT: MOSTLY CLOUDY WITH A 10-20% CHANCE OF A RAIN SHOWER. LOWS IN THE MID 30’S NORTH TO MID 40’S SOUTH.
THURSDAY: MOSTLY CLOUDY WITH 10-20% CHANCE OF SOME RAIN SHOWERS. HIGHS IN THE LOW 40’S NORTH TO MID 50’S SOUTH. NORTHWEST WINDS 5-15 MPH, GUSTING TO 25 MPH.
THURSDAY NIGHT: PARTLY TO MOSTLY CLOUDY. LOWS IN THE UPPER 20’S NORTH TO UPPER 30’S SOUTH.
FRIDAY: MIX OF SUN AND CLOUDS, 20% CHANCE OF A RAIN SHOWER. HIGH IN THE MID 40’S NORTH TO MID 50’S SOUTH. WINDS FROM THE NORTHWEST AT 5-15 MPH, GUSTS UP TO 30-40 MPH.
FRIDAY NIGHT: DECREASING CLOUDS WITH A 20-30% CHANCE OF SNOW SHOWERS IN OHIO. LOWS IN THE LOW 20’S EAST TO UPPER 30’S SOUTHWEST.
SATURDAY: MOSTLY SUNNY TO PARTLY CLOUDY, 10% CHANCE AT AN ISOLATED RAIN SHOWER. HIGHS IN THE MID 30’S EAST TO NEAR 50 SOUTHWEST.
SATURDAY NIGHT: CLEAR TO MOSTLY CLEAR WITH LOWS IN THE UPPER 20’S TO UPPER 30’S.
SUNDAY: SOME CLOUDS INCREASING TO THE SOUTHWEST, PERHAPS AN ISOLATED SHOWER THERE TOO. HIGHS IN THE UPPER 40’S NORTH TO UPPER 50’S SOUTH.
SUNDAY NIGHT: CLOUDY WITH ISOLATED TO SCATTERED RAIN. LOWS IN THE UPPER 30’S TO LOW 50’S.
MONDAY: PARTLY TO MOSTLY CLOUDY WITH 30-40% CHANCE OF SCATTERED RAIN AND STORMS. HIGHS IN THE MID 50’S TO MID 60’S.
MONDAY NIGHT: MOSTLY CLOUDY WITH A 30-40% CHANCE OF RAIN AND STORMS. LOWS IN THE LOW 40’S TO LOW 50’S.