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Third Day of 75+ Dew Points

22 Jul 2025 05:30 AM
The elevated humidity was quite noticeable on Monday with dew point temperatures reaching at least 75°F for a third day in a row for Des Moines. The featured chart looks into the longest such streak each year based on IEM computations from available hourly observations for Des Moines. The average longest such streak each year is just over three days, but even five days puts the total in the top twenty listing. July and August are certainly the favored time of year as the proverbial "corn sweat" (plant transpiration) helps to buoy humidity levels this time of year. Tuesday will likely push this year's streak to four days with slightly less humid conditions on Wednesday expected.

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Bad: 0

Tags:   dewpoint   streak  

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Above 50 in December

17 Dec 2014 05:39 AM
The stretch of warm weather this past weekend was rather remarkable for December. For the Des Moines Airport, the temperature stayed at or above 50 degrees for just over 2 straight days. The featured chart displays the longest consecutive stretches of time in December that the temperature was at or above 50 degrees. According to this analysis based on IEM archives, this was the longest such streak for Des Moines in December. What makes it even more remarkable is that this followed the longest streak below 32 degrees in November, which was just last month! You can generate plots like this for other sites in the country and for a threshold and month of your choice.

Voting:
Good: 12
Bad: 7
Abstain: 4

Tags:   streak   month