When it comes to growing degree day models, it is important to remember that although
they serve as useful guides, they don’t replace scouting techniques or your own
observations on the course. It is also important to note that for the most accurate
GDD data, it’s recommended you utilize an on-site weather station. That said, models
such as this do serve as a guide to help you compare month over month and year over
If you do have your own weather station, you may see some variances. Reasons include:
- The location of your weather station and local station feeding this model may be
exposed to differences in elevation, proximity to water, shade/sun, and wind.
- Online model accumulations are reported once a day at midnight each night. Your
station will report in real time.