Posted November 26, 2010, 12:55 AM.

Predicted lows for Friday morning are 28°F in Menifee, 30°F in Temecula, 31°F in Perris, 33°F in Riverside, 34°F in Wildomar, 36°F in Moreno Valley and Lake Elsinore, and 37°F in Fallbrook.

Thursday night was shaping up to be the second cold night in a row. Wildomar recorded 29°F Thursday morning, the coldest temperature recorded at a WeatherCurrents station this year. Murrieta (31°F) was also freezing. Lake Elsinore (32°F), Menifee (32°F were at freezing. Moreno Valley (33°F), Perris (33°F), Temecula (34°F) and French Valley (35°F) were near freezing.

Dry conditions should help limit frost formation.

Frost can form in sheltered conditions when temperatures are 37°F or less, if the dewpoint is high enough. Some plants are frost-sensitive and should be protected from frosty conditions which can harm or even kill them.