<page_title> Lewiston, Idaho </page_title> <section_title> Climate </section_title> <table> <cell> 12.25 (311) <col_header> Climate data for Lewiston, Idaho (1981−2010 normals) </col_header> <col_header> Year </col_header> <row_header> Average precipitation inches (mm) </row_header> </cell> <cell> 9.3 <col_header> Climate data for Lewiston, Idaho (1981−2010 normals) </col_header> <col_header> Year </col_header> <row_header> Average snowy days (≥ 0.1 in) </row_header> </cell> </table>
Precipitation averages 12.25 inches (311 mm) annually, an average snowfall of 9.3 inches.