Fontana, California
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° -5.6° (1979) 33.9° (1971) 3.5" 0"
February 21° -2.2° (1984) 33.3° (1977) 3.42" 0"
March 22° -1.1° (1966) 36.1° (1978) 3.49" 0"
April 24° -1.1° (1955) 38.9° (1984) 0.63" 0"
May 12° 27° 1.7° (1959) 44.4° (1984) 0.19" 0"
June 14° 31° 5.6° (1962) 43.9° (1961) 0.01" 0"
July 17° 35° 8.9° (1982) 45.6° (1972) 0" 0"
August 17° 35° 8.9° (1978) 43.9° (1981) 0.11" 0"
September 17° 33° 6.7° (1955) 47.2° (1971) 0.26" 0"
October 13° 28° 0.6° (1953) 42.2° (1980) 0.27" 0"
November 23° -1.1° (1983) 35.6° (1966) 1.26" 0"
December 21° -5° (1978) 33.9° (1958) 1.63" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 17.2° 35.6° 9° (1955) 42° (1972) 0" NA
Aug 2 17.2° 35.6° 12° (1979) 41° (1955) 0" NA
Aug 3 17.2° 35.6° 11° (1953) 42° (1971) 0" NA
Aug 4 17.2° 35.6° 11° (1953) 41° (1969) 0" NA
Aug 5 17.2° 35.6° 11° (1953) 42° (1983) 0" NA
Aug 6 17.2° 35.6° 12° (1951) 42° (1983) 0" NA
Aug 7 17.2° 35.6° 13° (1965) 42° (1970) 0" NA
Aug 8 17.2° 35.6° 11° (1955) 43° (1971) 0" NA
Aug 9 17.2° 35.6° 10° (1955) 43° (1971) 0" NA
Aug 10 17.2° 35.6° 11° (1955) 42° (1965) 0" NA
Aug 11 17.2° 35° 11° (1974) 40° (1971) 0" NA
Aug 12 17.2° 35° 11° (1955) 39° (1962) 0" NA
Aug 13 17.2° 35° 11° (1951) 42° (1967) 0" NA
Aug 14 17.2° 35° 11° (1976) 41° (1967) 0" NA
Aug 15 17.2° 35° 11° (1976) 40° (1967) 0" NA
Aug 16 17.2° 35° 10° (1978) 40° (1984) 0" NA
Aug 17 17.2° 35° 11° (1978) 41° (1984) 0" NA
Aug 18 17.2° 35° 10° (1978) 40° (1967) 0" NA
Aug 19 17.2° 35° 12° (1978) 39° (1973) 0" NA
Aug 20 17.2° 35° 11° (1978) 42° (1969) 0" NA
Aug 21 17.2° 35° 12° (1965) 43° (1969) 0.01" NA
Aug 22 17.2° 35° 9° (1978) 43° (1969) 0.01" NA
Aug 23 17.2° 34.4° 11° (1978) 43° (1956) 0.01" NA
Aug 24 17.2° 34.4° 10° (1978) 41° (1956) 0.01" NA
Aug 25 17.2° 34.4° 9° (1978) 42° (1981) 0.01" NA
Aug 26 17.2° 34.4° 11° (1978) 41° (1981) 0.01" NA
Aug 27 17.2° 34.4° 12° (1953) 44° (1981) 0.01" NA
Aug 28 17.2° 34.4° 11° (1953) 42° (1967) 0.01" NA
Aug 29 17.2° 34.4° 13° (1957) 43° (1967) 0.01" NA
Aug 30 17.2° 34.4° 11° (1965) 42° (1976) 0.01" NA
Aug 31 17.2° 33.9° 12° (1979) 40° (1955) 0.01" NA
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