A very cold and dry airmass will settle over southern California tonight. As a result, light winds and clear skies will combine with this cold air to allow temperatures to fall well below freezing in the high deserts and into the lower and middle 30s across the inland empire. These cold temperatures will last for up to six hours and will likely result in frosty conditions that may damage sensitive plants or animals. In the high desert, some of the coldest areas may even see a hard freeze causing pipe damage. Be sure to cover or protect anything that can freeze and be damaged. Another cold front will move in Friday that will bring rain and snow. Click on the image to enlarge.