A front pushed through the state on Monday and while some portions of southeastern Iowa received rainfall, near surface dry air won out for the majority of the state. The featured chart presents dew point temperature climatology by wind direction based on period of record observations from Des Moines. The statistics are produced by computing vapor pressures first and then back-computing the dew point from those values so to better account for the non-linearity of dew point. The observed values for Monday are plotted as well for comparison. All of the values plotted are below the mean value with a few approaching the 5th percentile.

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