With this application, you can plot COOP observations for a date of your choice.

Select Datasource: Select Parameter: Year Month Day Image Size
1 Day 1 Day
Show point labels

Plot

Open this plot in a new window for comparison with other plots. Once the image is loaded up in another window, you can modify this plots parameters.

Data Listing

# 2018-08-15 High Temperature
# Download From: https://mesonet.agron.iastate.edu/GIS/apps/coop/plot.phtml
# Download Date: 15 Aug 2018
# Data Contact: Daryl Herzmann akrherz@iastate.edu 515.294.5978
#-----------------------snip------------------
        ID,         StationName,      Date,  Latitude, Longitude,      high
     CLDI4,CLARINDA            ,2018-08-15,   40.7333,  -95.0333,        73
     SWEI4,SWEA CITY 4 W       ,2018-08-15,   43.3853,  -94.2500,        84
     AMOI4,Anamosa 3SSW        ,2018-08-15,   42.0763,  -91.3019,        87
     SXGI4,SIOUX CITY AIRPORT  ,2018-08-15,   42.3964,  -96.3778,        85

You should be able to 'copy & paste' this raw data listing into a simple text editor and save the data file on your machine. Most GIS systems can then import this dataset as a layer. You may have to omit the commented lines (#) if your GIS has trouble importing the data.