National Weather Service United States Department of Commerce

The National Weather Service in cooperation with the Kentucky Mesonet is happy to announce an expansion of the nightly Regional Agricultural Weather Report (AGO). The number of locations has increased from 4 to 20. Four are cooperative stations, 16 are automated mesonet locations. This product includes 24 hour maximum and minimum air temperatures, precipitation, 4 inch depth soil temperatures, and relative humidity. It also includes the current 20 inch depth soil temperture. Below is a sample of of the product:

Regional Agricultural Weather Report
National Weather Service Louisville KY
811 PM EDT Wed Apr 26 2017

...Temperature, Relative Humidity Extremes, and Precipitation
   during the last 24 hours...
...Soil Temperatures Extremes under grass at 4 inch and current
   20 inch depth during the last 24 hours...
...Observation times varies...

                                            Soil Temps
                  Obs    Air Temps         -4 IN--   20 IN     RH
                  Time    Hi  Lo   Precip  Hi   Lo  Current  Hi  Lo

Cooperative Stations

Bardstown         6 PM    82  52    0.00   70   65    60     97  27
Mammoth Cave      1 PM    84  57    0.00   64   61    60     95  43
Paducah          12 AM    81  54    0.00   62   62
Somerset 2N

KY Mesonet Stations

Benton 4N         7 PM    80  61    0.00   70   64    62     83  49
Bowling Green 5S  7 PM    81  52    0.00   74   61    62    100  33
Carrollton 2E     8 PM    83  51    0.00   67   59    58    100  31
Columbia 3N       7 PM    81  53    0.04   69   60    61     99  31
Danville 3SW      8 PM    81  52    0.00   65   61    59     95  32
Frankfort 7S      8 PM    82  54    0.00   73   60    61    100  27
Franklin 4SW      8 PM    82  57    0.00   71   60    60     89  34
Glasgow 11W       7 PM    81  57    0.00   74   59    61     94  42
Hopkinsville 6N   7 PM    82  59    0.00   74   60    61     89  35
Lexington 7S      8 PM    80  54    0.00   69   61    59     96  34
Morganfield 4E    7 PM    83  60    0.00   72   63    61     88  46
Morgantown 4SE    8 PM    82  53    0.00   72   62    64     98  38
Princeton 2SE     7 PM    82  61    0.00   79   63    62     86  46
Richmond 8E       8 PM    83  49    0.00   65   58    58     99  34
Shelbyville 9NNE  8 PM    81  54    0.00   70   60    59     94  36
Shelbyville 10W   8 PM    81  56    0.00   72   59           93  33

$$

It is available every night after 8 PM EDT, 7 PM EST. The direct link to the product is here.

National Weather Service and the Kentucky Mesonet are happy to make this data available.