LAKE COUNTY, Calif. — A forecast of temperatures at or above the century mark has led to a heat advisory that’s set to last through the weekend.

The National Weather Service issued a heat advisory for all of Lake County that will be in effect from 11 a.m. Friday to 11 p.m. Sunday.

Temperatures during that time period are expected to range from the 90s up to as high as 105 degrees, especially in the south county, according to the local forecast. 

Overnight lows will hover in the low 60s, according to the forecast.

Temperatures are forecast to begin a marginal drop off on Tuesday, ranging in the high 80s to low 90s during the day and the low 50s at night during much of next week.

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