A low-level, high pressure area far north of the state has weakened, resulting in light and variable trade winds this weekend, the National Weather Service said.

The atmosphere is somewhat moist and unstable, and scattered showers are expected over island interiors in the afternoons for the next few days, forecasters said.

A shear line will approach Kaua'i Tuesday while at the same time trade winds will return. Showers from remnants of this shear line should affect mainly windward and mountain areas by the middle of next week.

Here's a closer look at the weekend weather:

Today: Isolated showers. The rain could be heavy at times. Partly cloudy, with a high near 84. East wind around 15 mph. Chance of precipitation is 20 percent.

Tonight: Isolated showers before midnight. Partly cloudy, with a low around 70. East wind between 5 and 10 mph. Chance of precipitation is 20 percent.

Sunday: Isolated showers after noon. Partly cloudy, with a high near 83. South wind around 5 mph. Chance of precipitation is 20 percent.

Sunday night: Isolated showers before midnight. Widespread haze. Partly cloudy, with a low around 71. East wind between 3 and 5 mph. Chance of precipitation is 20 percent.

Monday: Isolated showers after noon. Widespread haze. Partly cloudy, with a high near 84. East wind 8 to 11 mph becoming south. Chance of precipitation is 20 percent.

Monday night: Scattered showers. Mostly cloudy, with a low around 70. East wind around 10 mph. Chance of precipitation is 30 percent.