The featured chart presents an analysis of average summer (Jun, Jul, Aug) dew point for Des Moines based on available hourly observations. A simple linear regression fit is shown for the dataset and indicates an upward trend. The color of the bars indicate if the given year is above or below the simple long term average. A majority of the recent 30 years are shown to be above average. Preliminary data for this year (not shown) has this summer coming in slightly above average as well. The near term forecast has a drop in humidity for mid-week.

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Tags:   dewpoint   summer