BARSTOW — It’s going to be another wet holiday weekend as the National Weather Service says more rain is expected on Friday and Saturday. Just don’t ask how much is expected.

National Weather Service meteorologist Larissa Johnson said it’s too early to tell how much precipitation this trough will bring to Southern California.

“We were wrong last week with our prediction,” she said, citing two storms that brought several inches of rain and snow to the region over the Christmas weekend. “We’re still looking at the model data coming in and at this point it’s pretty hard to determine the amount of moisture we will see with this storm. We are not expecting as much accumulations as we saw last week.”

As of Wednesday, the NWS predicted a 40 percent chance of showers Friday morning and a 20 percent chance in the evening. Saturday will see a 20 percent chance of showers in the morning and just a chance of showers in the nighttime. Johnson said it’s safe to say snow is expected in higher elevations.

Thursday is expected to be warmest day of the week, with temperatures five to eight degrees above normal, Johnson said. The NWS predicts a high of 62 degrees and a low of 40 degrees after overnight temperatures dip into the 20s, causing residents to wake to icy windshields and roads in some areas.

Friday: Partly sunny skies with a 40 percent chance of showers mainly after 10 a.m. and a high near 57 degrees, and a nighttime low around 40 degrees with a 20 percent chance of showers.

Saturday: A 20 percent chance of showers with partly sunny skies and a high near 53 degrees, and a nighttime low around 37 degrees and a chance of showers.

Sunday: Mostly sunny skies with a high near 56 degrees and a nighttime low around 38 degrees.

Monday: Mostly sunny skies with a high near 54 degrees and low near 36 degrees.