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
Aug 1 55° 83° 44° (1932) 102° (1993) 0" NA
Aug 2 55° 83° 44° (1918) 105° (1946) 0" NA
Aug 3 55° 83° 42° (1932) 105° (1998) 0" NA
Aug 4 55° 83° 46° (1918) 106° (1998) 0" NA
Aug 5 55° 83° 45° (1950) 103° (1998) 0" NA
Aug 6 55° 83° 42° (1917) 102° (1982) 0" NA
Aug 7 55° 83° 44° (1932) 102° (1984) 0" NA
Aug 8 55° 83° 40° (1932) 100° (1984) 0" NA
Aug 9 55° 83° 39° (1932) 102° (1970) 0" NA
Aug 10 55° 83° 40° (1932) 102° (1940) 0" NA
Aug 11 55° 83° 42° (1932) 98° (1996) 0" NA
Aug 12 55° 83° 42° (1932) 98° (1998) 0" NA
Aug 13 55° 82° 41° (1979) 98° (1998) 0" NA
Aug 14 55° 82° 46° (1932) 100° (1951) 0" NA
Aug 15 55° 82° 45° (1932) 100° (1950) 0" NA
Aug 16 55° 82° 43° (1918) 100° (1950) 0" NA
Aug 17 54° 82° 37° (1932) 103° (1939) 0" NA
Aug 18 54° 82° 45° (1919) 103° (1934) 0" NA
Aug 19 54° 82° 44° (1928) 102° (1950) 0" NA
Aug 20 54° 82° 45° (1918) 102° (1950) 0" NA
Aug 21 54° 82° 44° (1935) 100° (1969) 0.01" NA
Aug 22 54° 82° 44° (1955) 99° (1999) 0.01" NA
Aug 23 54° 82° 41° (1963) 104° (1931) 0.01" NA
Aug 24 54° 82° 42° (1938) 103° (1931) 0.01" NA
Aug 25 54° 82° 44° (1932) 100° (1931) 0.01" NA
Aug 26 54° 82° 41° (1947) 101° (1944) 0.01" NA
Aug 27 54° 82° 42° (1942) 105° (1944) 0.01" NA
Aug 28 54° 82° 42° (1939) 104° (1944) 0.01" NA
Aug 29 54° 82° 45° (1921) 105° (1968) 0.01" NA
Aug 30 54° 82° 38° (1932) 103° (1968) 0.01" NA
Aug 31 54° 82° 42° (1939) 102° (1955) 0.01" NA
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