Winnetka, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 40° 68° 19° (1950) 93° (1975) 3.83" 0"
February 41° 70° 18° (1989) 94° (1986) 4.4" 0"
March 42° 72° 26° (1966) 101° (1988) 3.6" 0"
April 45° 78° 30° (1999) 105° (1989) 0.88" 0"
May 49° 81° 33° (1950) 113° (1984) 0.32" 0"
June 53° 89° 36° (1950) 113° (1990) 0.07" 0"
July 57° 95° 42° (1952) 115° (1985) 0.01" 0"
August 58° 96° 42° (1950) 116° (1985) 0.15" 0"
September 55° 92° 38° (1954) 115° (1979) 0.24" 0"
October 49° 84° 27° (1971) 110° (1980) 0.62" 0"
November 42° 75° 23° (1958) 99° (1975) 1.29" 0"
December 38° 69° 20° (1990) 96° (1958) 2.38" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 57° 94° 46° (1953) 111° (1998) 0" NA
Sep 2 57° 94° 45° (1964) 114° (1988) 0" NA
Sep 3 57° 94° 46° (1989) 114° (1988) 0" NA
Sep 4 57° 94° 47° (1964) 114° (1988) 0" NA
Sep 5 57° 94° 45° (1954) 114° (1955) 0" NA
Sep 6 56° 94° 45° (1951) 115° (1955) 0" NA
Sep 7 56° 93° 45° (1951) 109° (1955) 0.01" NA
Sep 8 56° 93° 44° (1954) 111° (1979) 0.01" NA
Sep 9 56° 93° 46° (1952) 115° (1979) 0.01" NA
Sep 10 56° 93° 45° (1949) 111° (1979) 0.01" NA
Sep 11 56° 93° 42° (1952) 112° (1983) 0.01" NA
Sep 12 56° 92° 42° (1952) 114° (1971) 0.01" NA
Sep 13 56° 92° 42° (1954) 115° (1971) 0.01" NA
Sep 14 56° 92° 40° (1954) 107° (1971) 0.01" NA
Sep 15 55° 92° 42° (1952) 106° (1979) 0.01" NA
Sep 16 55° 92° 44° (1952) 109° (2000) 0.01" NA
Sep 17 55° 92° 42° (1954) 108° (1991) 0.01" NA
Sep 18 55° 91° 40° (1954) 108° (1984) 0.01" NA
Sep 19 55° 91° 39° (1954) 106° (1984) 0.01" NA
Sep 20 55° 91° 38° (1954) 102° (1987) 0.01" NA
Sep 21 55° 91° 41° (1954) 107° (1974) 0.01" NA
Sep 22 54° 90° 42° (1953) 109° (1975) 0.01" NA
Sep 23 54° 90° 40° (1953) 108° (2002) 0.01" NA
Sep 24 54° 90° 43° (1953) 108° (1978) 0.01" NA
Sep 25 54° 90° 44° (1953) 112° (1960) 0.01" NA
Sep 26 54° 90° 45° (1953) 108° (1963) 0.01" NA
Sep 27 54° 89° 41° (1949) 107° (1993) 0.01" NA
Sep 28 53° 89° 42° (1949) 110° (1963) 0.01" NA
Sep 29 53° 89° 42° (1971) 106° (1980) 0.01" NA
Sep 30 53° 89° 39° (1950) 111° (1980) 0.01" NA
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