<P> Annual precipitation averages 40.3 inches or 1,024 millimetres . Measurable precipitation falls on an average of 119 days each year . The wettest `` rain year '' was from July 1889 to June 1890 with 73.30 inches ( 1,861.8 mm ) and the driest from July 1976 to June 1977 with 17.56 inches ( 446.0 mm ) . The greatest monthly precipitation was 23.21 inches ( 589.5 mm ) in December 2002 . The greatest 24 - hour precipitation was 6.79 inches ( 172.5 mm ) on December 27 , 2002 . However , historic `` 100 '' year dramatic weather events such as the Christmas Week flood of 1955 and , especially , the Christmas flood of 1964 , which severely damaged the region , may not be reflected in records listed herein . Snowfall on the coast happens occasionally , averaging only 0.2 inches or 0.0051 metres as of the 1981 -- 2010 normals , but only five years during that period received measurable snowfall . </P>
<P> Annual precipitation averages 40.3 inches or 1,024 millimetres . Measurable precipitation falls on an average of 119 days each year . The wettest `` rain year '' was from July 1889 to June 1890 with 73.30 inches ( 1,861.8 mm ) and the driest from July 1976 to June 1977 with 17.56 inches ( 446.0 mm ) . The greatest monthly precipitation was 23.21 inches ( 589.5 mm ) in December 2002 . The greatest 24 - hour precipitation was 6.79 inches ( 172.5 mm ) on December 27 , 2002 . However , historic `` 100 '' year dramatic weather events such as the Christmas Week flood of 1955 and , especially , the Christmas flood of 1964 , which severely damaged the region , may not be reflected in records listed herein . Snowfall on the coast happens occasionally , averaging only 0.2 inches or 0.0051 metres as of the 1981 -- 2010 normals , but only five years during that period received measurable snowfall . </P>
how many days a year does it rain in eureka ca
how many days a year does it rain in eureka ca
119 days each year
119 days each year