▁th under st orm s ▁and ▁high ▁hum id ity ▁to ▁Los ▁Angeles ▁in ▁the ▁summer ▁and ▁early ▁fall . ▁ ▁Winter ▁Winter s ▁are ▁m ild , ▁with ▁average ▁high ▁temper atures ▁at ▁the ▁Dow nt own / US C ▁weather ▁station ▁of ▁ ▁and ▁l ows ▁of ▁, ▁with ▁occas ional ▁heavy ▁ra inf all . ▁Tem per atures ▁across ▁the ▁coast al ▁bas in ▁rarely ▁drop ▁below ▁, ▁although ▁light ▁fro st ▁does ▁occasionally ▁form ▁during ▁cool er ▁night s , ▁at ▁least ▁in ▁areas ▁removed ▁from ▁the ▁direct ▁influence ▁of ▁the ▁coast al ▁air ▁( appro xim ately ▁ ▁in land ▁from ▁the ▁beach ). ▁The ▁last ▁severe ▁cold ▁out break ▁in ▁the ▁Los ▁Angeles ▁area ▁occurred ▁in ▁December ▁ 1 9 9 0 , ▁when ▁temper atures ▁dropped ▁below ▁free zing ▁across ▁a ▁major ▁portion ▁of ▁the ▁coast al ▁plain , ▁and ▁into ▁the ▁low ▁to ▁mid ▁ 2 0 s ▁F ▁over ▁in land ▁valle ys . ▁ ▁Tem per atures ▁stayed ▁below ▁free zing ▁for ▁up ▁to ▁eight ▁hours ▁at ▁some ▁valley ▁locations , ▁resulting ▁in ▁significant ▁damage ▁to ▁plants ▁and ▁commercial ▁agricult ure . ▁ ▁In ▁the ▁winter ▁months , ▁high ▁pressure ▁systems ▁over ▁the ▁desert s ▁often ▁bring ▁Santa ▁Ana ▁wind s , ▁resulting ▁in ▁dry , ▁and ▁dust y ▁days . ▁On ▁rare ▁occasion , ▁temper atures ▁can ▁reach ▁into ▁the ▁ ▁range ▁during ▁Santa ▁Ana ▁W inds ▁even ▁in ▁December ▁or ▁January . ▁Sun ny ▁sk ies ▁character ist ically ▁domin ate