After an extended stretch of cool weather, warmer air is set to return this weekend with highs in the 70s for much of the state. How common are 70+ temperatures? The featured chart displays hourly frequencies of having such warm temperatures by week of the year for Des Moines. The calendar says April now and frequencies are on the increase each week. For the first week of April, the frequencies peak out at about 25% late afternoon. So such warm temperatures are not common yet, but nothing out of the ordinary.

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