Unemployment rates across the North Bay edged upward in June, as a summer season slowdown led to employers shedding jobs across a number of industries, according to figures released late Thursday by the state Employment Development Department.

Sonoma County's jobless rate increased to 6.7 percent in June, up from 6.1 percent in May, but well below the year-ago rate of 8.9 percent.

The largest workforce reduction over the month came in the government sector, which shed 1,400 jobs. Education and health services eliminated 200.

Despite the uptick in jobless rates, Sonoma County showed positive yearly growth, adding 4,400 jobs. Government added 1,200 jobs over the year, while trade, transportation and utilities added 900 jobs. Education and health services added 700, as did leisure and hospitality, while professional business services added 500.

Napa County's unemployment rate ticked up to 5.8 percent in June, from a revised 5.3 percent in May. Last year's rate was 7.7 percent.

Jobs cuts over the month, like elsewhere, occurred in the government sector and education, which each shed 200 jobs. Over the year, education and health shed 300 jobs, while professional business services lost 300.

Napa County added 2,000 jobs over the year, a 1.8 percent increase from the previous year. Gains occurred significantly in manufacturing, which includes wine production, which added 1,000 jobs over the year. Hospitality and tourism added 700, while construction added 500.

Marin County continued to post the lowest jobless rate in California, at 5.1 percent. Industry specifics for Marin, part of a three-county region that includes San Francisco and San Mateo,  are not yet available.

In Solano County, the unemployment rate was 8.2 percent in June, up from a revised 7.7 percent in May but well below last year's rate of 10.5 percent.

Government shed 200 jobs over the month, the only sector to do so. Over the year, the county added 2,700 jobs, a 1.1 percent increase, with education and health services leading the way with 900 jobs added.  Trade, transportation and utilities added 800, while construction posted 700. Leisure and hospitality added 400.

Mendocino County's rate increased to 7.4 percent in June, up from 7 percent in May, but below last year's rate of 9.5 percent.

Lake County's rate increased to 12 percent in June, up from 11.6 percent in May but still below last year's rate of 14.8 percent.

The comparable national unemployment remained effectively unchanged at 7.6 percent. The statewide average was 8.8 percent,