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) 5.13" 0"
February 42° 62° 23° (1917) 85° (1948) 5.54" 0"
March 44° 67° 23° (1949) 90° (1955) 3.87" 0"
April 45° 71° 27° (1929) 95° (2004) 1.59" 0"
May 50° 76° 30° (1974) 103° (2001) 1.03" 0"
June 53° 81° 34° (1929) 113° (1961) 0.19" 0"
July 55° 83° 38° (1929) 112° (1972) 0" 0"
August 55° 83° 37° (1932) 106° (1998) 0.09" 0"
September 53° 83° 36° (1932) 109° (1955) 0.3" 0"
October 49° 77° 28° (1946) 106° (1980) 1.48" 0"
November 44° 65° 25° (1932) 89° (1929) 3.45" 0"
December 40° 57° 14° (1990) 81° (1967) 5.23" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 44° 69° 30° (1936) 87° (2000) 0.07" 0"
Apr 2 44° 69° 29° (1949) 87° (2000) 0.08" 0"
Apr 3 44° 69° 33° (1955) 88° (1961) 0.07" 0"
Apr 4 44° 69° 29° (1918) 86° (1960) 0.08" 0"
Apr 5 44° 69° 31° (1918) 86° (1957) 0.07" 0"
Apr 6 44° 69° 30° (1929) 91° (1939) 0.07" 0"
Apr 7 44° 70° 29° (1929) 89° (1989) 0.06" 0"
Apr 8 44° 70° 30° (1953) 91° (1989) 0.06" 0"
Apr 9 44° 70° 30° (1929) 90° (1989) 0.06" 0"
Apr 10 44° 70° 32° (1929) 90° (1988) 0.06" 0"
Apr 11 45° 70° 32° (1929) 88° (1988) 0.06" 0"
Apr 12 45° 71° 30° (1929) 90° (1947) 0.06" 0"
Apr 13 45° 71° 31° (1929) 90° (1947) 0.05" 0"
Apr 14 45° 71° 30° (1921) 91° (1985) 0.05" 0"
Apr 15 45° 71° 30° (1921) 90° (1947) 0.06" 0"
Apr 16 45° 71° 30° (1917) 88° (1931) 0.04" 0"
Apr 17 45° 72° 32° (1917) 88° (1954) 0.05" 0"
Apr 18 45° 72° 32° (1917) 90° (1950) 0.05" 0"
Apr 19 46° 72° 30° (1917) 91° (2009) 0.04" 0"
Apr 20 46° 72° 29° (1929) 94° (1931) 0.05" 0"
Apr 21 46° 72° 30° (1963) 95° (2009) 0.04" 0"
Apr 22 46° 72° 27° (1929) 95° (2009) 0.05" 0"
Apr 23 46° 73° 29° (1929) 90° (1946) 0.04" 0"
Apr 24 46° 73° 31° (1964) 87° (1946) 0.05" 0"
Apr 25 46° 73° 34° (1964) 91° (1965) 0.04" 0"
Apr 26 47° 73° 31° (1949) 95° (2004) 0.04" 0"
Apr 27 47° 73° 31° (1955) 95° (2004) 0.04" 0"
Apr 28 47° 74° 32° (1970) 95° (1921) 0.03" 0"
Apr 29 47° 74° 32° (1949) 95° (1981) 0.04" 0"
Apr 30 47° 74° 30° (1949) 93° (1981) 0.03" 0"
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