Degree Day Information for Iowa

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May 10, 2004
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June 14, 2004
June 21, 2004
June 28, 2004
July 5, 2004
July 12, 2004
July 19, 2004
July 26, 2004
 Degree Day Map
Base-50 degree days. (Accumulated degree days shown; departure from average shown in parentheses.)
May 1, 2004 through May 23, 2004.

Severe weather raises issues

Severe storms struck most of Iowa the end of last week. Weather-related crop damage issues included sheet and rill erosion, flooding, hail, and even remnant damage from frost in northern Iowa on May 15. The watchword for most Iowa agriculture following dramatic weather events is to wait and see. In general, the best early indicator of crop damage is watching the young plants for recovery. As the crop is recovering, a good early activity is checking for field border and drains to clean up debris and repair washouts. So far, May has been about on average in temperatures, with rapid cropplanting and favorable early growth.

Updated July 22, 2004.

How and why
we measure
degree days
(5/17/2004)

Degree days and
crop management
(4/6/1998)

Updated each Wednesday until July 22, after which it is updated monthly.
Provided by Rich Pope, Extension Specialist
Department of Entomology, Iowa State University,
Ames, Iowa. Original weather data from
Midwest Climate Information Center. 		[Integrated Crop Management]
[Integrated Pest Management]
[To Iowa State Entomology Home Page]

This page is part of the Iowa State Entomology site. Last updated 7/22/04 by John VanDyk