Danville lies along the Indiana border, south of Chicago, and deep inside of corn sweat country. Are you ready to swelter?

At 355PM, CT, Danville was reporting a temperature of 91 degrees with clear skies. Importantly, dewpoints were in the low to mid 70s across the regions, making things even more uncomfortable. Lower level forcing is driving a bit of surface development, which is initiating in the High Plains. The moisture that crops up here will then track along the southern edge of a ridge that has emerged over the north central part of the US. There is, as a result, a marginal risk of severe weather for the area tomorrow. There is weak forcing but unstable air. Things may unfold quickly.
If things proceed as current longer range models indicate, storms will arrive in Danville and linger into the overnight hours, before exiting town in the predawn of Thursday. If this is another derecho, as have been frequent of late, don’t be surprised if the onset is earlier than currently indicated. Fortunately, the ridge is going to continue to squash further south. It isn’t necessarily enjoying the benefit of cold air, but the air is dryer, and Thursday afternoon, at the very least, will be pleasant.
Tomorrow – Rain in the afternoon, with strong thunderstorms possible overnight, High 92, Low 72
Thursday – Early morning thunderstorms, with gusty winds, then much more pleasant, High 79, Low 66

TWC: Tomorrow – A mix of clouds and sun early, then becoming cloudy later in the day. A stray thunderstorm is possible High 91, Low 70
Thursday – Scattered thunderstorms in the morning, then cloudy skies late.  High 75, Low 66

AW: Tomorrow – Warm and humid with variable cloudiness; a couple of heavy thunderstorms in the afternoon; storms can bring flash flooding and damaging winds High 89, Low 70
Thursday – Periods of rain and a thunderstorm in the morning; mostly cloudy and humid; heavy downpours can reduce visibility and cause ponding on streets and highways High 74, Low 68

NWS: Tomorrow – 40 percent chance of showers and thunderstorms after 1pm. High 89, Low 72
Thursday – A 50 percent chance of showers and thunderstorms before 1pm. High 77, Low 65

WB: Tomorrow – Patchy fog in the morning. Sunny with a slight chance of showers and thunderstorms in the morning then partly sunny with a chance of showers and thunderstorms in the afternoon. High 93, Low 74
Thursday – Mostly cloudy. A chance of showers and thunderstorms in the morning. High 76, Low 66

WN: Tomorrow – Partly cloudy with a chance of storms, High 89, Low 72
Thursday – Mostly cloudy with a chance of storms, High 78, Low 65

CLI: Tomorrow – Thunderstorm, High 91, Low 71
Thursday – Thunderstorm, High 76, Low 63

Clearly, whatever happens in Danville this week is going to have a real impact. Expect better sleeping this later this week, central Illinois. Satellite with a few clouds by St. Louis before the sun goes down.