Napa, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 39° 57° 19° (1937) 85° (1962) 5.35" 0"
February 42° 62° 23° (1917) 85° (1948) 5.03" 0"
March 43° 65° 23° (1949) 90° (1955) 4.09" 0"
April 45° 71° 27° (1929) 95° (2004) 1.45" 0"
May 49° 75° 30° (1974) 103° (2001) 0.78" 0"
June 53° 81° 34° (1929) 113° (1961) 0.16" 0"
July 55° 83° 38° (1929) 112° (1972) 0.05" 0"
August 55° 82° 37° (1932) 106° (1998) 0.11" 0"
September 53° 82° 36° (1932) 109° (1955) 0.41" 0"
October 49° 76° 28° (1946) 106° (1980) 1.43" 0"
November 43° 64° 25° (1932) 89° (1929) 3.72" 0"
December 39° 57° 14° (1990) 81° (1967) 3.88" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 54° 82° 43° (1975) 103° (1972) 0" NA
Jul 2 54° 82° 45° (1929) 105° (1929) 0" NA
Jul 3 54° 82° 44° (1963) 104° (1970) 0" NA
Jul 4 54° 82° 44° (1951) 106° (1931) 0" NA
Jul 5 54° 82° 44° (1955) 106° (1931) 0" NA
Jul 6 54° 82° 44° (1955) 106° (1921) 0" NA
Jul 7 54° 82° 42° (1935) 106° (1921) 0" NA
Jul 8 54° 82° 40° (1921) 101° (1939) 0" NA
Jul 9 54° 82° 43° (1921) 106° (1961) 0" NA
Jul 10 54° 82° 43° (1918) 108° (1961) 0" NA
Jul 11 54° 82° 43° (1920) 106° (1961) 0" NA
Jul 12 54° 82° 44° (1929) 101° (1983) 0" NA
Jul 13 54° 83° 38° (1929) 104° (1972) 0" NA
Jul 14 54° 83° 45° (1946) 112° (1972) 0" NA
Jul 15 54° 83° 44° (1920) 109° (1972) 0" NA
Jul 16 55° 83° 43° (1920) 103° (1995) 0" NA
Jul 17 55° 83° 42° (1920) 106° (1988) 0" NA
Jul 18 55° 83° 40° (1927) 103° (1988) 0" NA
Jul 19 55° 83° 45° (1944) 101° (1961) 0" NA
Jul 20 55° 83° 46° (1918) 107° (1917) 0" NA
Jul 21 55° 83° 44° (1929) 107° (1917) 0" NA
Jul 22 55° 83° 45° (1920) 107° (2006) 0.01" NA
Jul 23 55° 83° 41° (1932) 108° (2006) 0.01" NA
Jul 24 55° 83° 47° (1963) 103° (2006) 0.01" NA
Jul 25 55° 83° 45° (1921) 101° (1975) 0.01" NA
Jul 26 55° 83° 45° (1924) 99° (1963) 0.01" NA
Jul 27 55° 83° 44° (1917) 99° (1943) 0" NA
Jul 28 55° 83° 41° (1918) 107° (1954) 0" NA
Jul 29 55° 83° 41° (1932) 105° (1954) 0" NA
Jul 30 55° 83° 43° (1961) 103° (1977) 0" NA
Jul 31 55° 83° 41° (1924) 102° (1993) 0" NA
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