Patchy frost is the forecast for Sunday morning as temperatures dip to 39 degrees. But first, we have some gusty winds and thunderstorms this afternoon.

The forecast:

Friday: Showers and possibly a thunderstorm. Some of the storms could produce gusty winds and heavy rain. Patchy fog before 9am. High near 75. South wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: A chance of showers, mainly before 7 pm. Cloudy during the early evening, then gradual clearing, with a low around 48. Northwest wind 11 to 13 mph. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Sunny, with a high near 63. North wind 6 to 9 mph.

Saturday Night: Mostly clear, with a low around 39. Calm wind.

Sunday: Sunny, with a high near 69.

Sunday Night: Mostly clear, with a low around 45.

Columbus Day: Sunny, with a high near 70.