Warm temperatures will prevail through Thursday of the work week, but a sharp cooling trend will begin Friday and persist through the holiday weekend. Here’s the 7-day forecast from the National Weather Service:

Today: Patchy fog before 9 a.m. Otherwise, sunny, with a high near 55. Light and variable wind becoming northeast 5 to 8 mph in the morning.

Tonight: Partly cloudy, with a low around 33. East northeast wind 6 to 8 mph.

Wednesday: Increasing clouds, with a high near 48. Southeast wind around 8 mph.

Wednesday Night: A slight chance of showers after midnight. Mostly cloudy, with a low around 41. Southeast wind around 8 mph. Chance of precipitation is 20%.

Thursday: A chance of showers before noon, then a chance of drizzle after noon. Cloudy, with a high near 53. East southeast wind 6 to 8 mph becoming north in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: A slight chance of drizzle before midnight. Mostly cloudy, with a low around 27.

Friday: Mostly cloudy, with a high near 33.

Friday Night: Mostly cloudy, with a low around 19.

Saturday: Partly sunny, with a high near 29.

Saturday Night: A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.

Sunday: Partly sunny, with a high near 29.

Sunday Night: Partly cloudy, with a low around 11.

Christmas Day: Mostly sunny, with a high near 25.