The miner said it is due to fewer workers at Herradura due to COVID-19, lower-than-expected ore grades at the dynamic leaching plant and restricted access at the Noche Buena mine.
Silver production guidance was maintained at 51-56mln ounces.
In the three months to September 30, the Mexican precious metals firm produced 13.3mln ounces of silver and 172,000 ounces of gold.
By-product lead and zinc production decreased 6.4% and 1.5% respectively compared to last year, driven primarily by lower ore grades at Fresnillo, mitigated by higher ore grades at Saucito.
Shares slipped 4% to 1,279.5p on Wednesday morning.
Published at Fresnillo cuts full-year gold production guidance