Automated Data Plotter

This application dynamically generates many types of graphs derived from various IEM data sources. Feel free to use these generated graphics in whatever way you wish.

Reset App IEM Explorer (Simplified)

1 Select a Chart Type

Choose from available chart types:

2 Configure Chart Options

Select Station:

Units of Average Wind Speed

Optional. Average for inclusive period of days

Optional. Limit Period of Record to inclusive start year

Optional. Limit Period of Record to inclusive end year

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This chart presents the hourly average wind speeds by month of the year or by custom periods. The hours presented are valid in the local time zone of the reporting station. For example in Iowa, 3 PM would represent 3 PM CDT in the summer and 3 PM CST in the winter. Please complain to us if this logic causes you heartburn! The format of the date periods is two digit month followed by two digit day for both the start and end date.

CSV Data Excel Download

If you notice plotting issues with the image above, please contact us and provide the URL address currently shown by your web browser.

IEM Daily Features using this plot

The IEM Daily Features found on this website often utilize plots found on this application. Here is a listing of features referencing this plot type.

03 Jul 2025: Hourly Wind Speed Climo
13 Oct 2023: Progressively Windier
29 Nov 2021: November Hourly Wind Speeds
01 Apr 2020: April Wind Speeds
20 Aug 2018: August Winds
22 Dec 2016: Hourly Wind Speeds