
Above is a photo taken last fall after the weather had created ripe conditions for frost. As you can see, the thermometer is at 45 degrees with the grass below covered in frost. Wouldn't you think that frost is only a concern at 32 degrees or below? This photo is firm on the fact that although it's 45 degrees (the photo was from hole 15), the concoction of grass type, height of cut, humidity, dew point, temperature, and shade can cause frost to form at much higher temperatures. In addition, after frost forms keep in mind it may take a while to thaw once the temperatures rise above the threshold at which it formed.
The photo below is that of footprints from someone walking their dog on the golf course while their was frost. This footprint turned from purple to brown in the days following.
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