After a brief cool down over most of the Midwest today, another surge of hot summer air is about to move in from the southwest. The graphic shows the WRF/NAM temperature forecast over the north central US late Monday afternoon. The broad area of deep purple over most of Iowa are temps of 100+. The GFS model is about 5 degrees cooler. Reality will most likely split the difference. The Des Moines NWS office is forecasting highs from 95-100 over most of the state.
The good news is that the heat is going to be replaced later in the week with much cooler Canadian air. A cold front will sink over the Midwest Wednesday into Thursday. By Friday highs that were well into the 90s will be replaced by highs only in the 60s northern Midwest to 70s south. The high temperatures of the next two days will tend to deepen the spreading drought.
For the Chicago metro area, there is a slight chance of rain late tonight as a warm front moves through. Highs Monday and Tuesday will be well into the 90s, near record levels. The normal high is now down to 78. A much better chance of rain Wednesday afternoon and early night as the cold front moves through. By Friday, highs over the metro area are only expected to be in the upper 60s.
You can follow my articles by clicking on the “Subscribe” link on top.
Comprehensive weather articles and discussion can be found at http://www.storm-central.com