The main reason for the lack of rain or clouds for that matter is in response to the upper level high covering the Central Plains. Lately this upper level high (ridge) has been giving off subsidence - where air gradually sinks over a broad area. This subtle sinking motion prevents cloud droplets from forming and hinders your chance of rain. Many people confuse this process because they think that rain gravitates to the ground. Thus, you need sinking motion in the atmosphere to promote rain...but honestly it's exactly the opposite.
(GFS model shows rain by next week Tuesday)
(European model shows rain for next week Wednesday)
There is hope for the future. Several weather models indicate that the upper level high will break down sometime next week and allow a cold front to slip through the state. This change in the flow will actually promote lift in the atmosphere and give us an opportunity for rain. It's difficult to pinpoint exactly when this change will occur but it will be something to watch for in the next few days.
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