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
Jan 1 6.7° 19.4° -1° (1965) 26° (1969) 0.08" NA
Jan 2 6.7° 19.4° -1° (1960) 28° (1964) 0.09" NA
Jan 3 6.7° 19.4° -2° (1982) 28° (1969) 0.09" NA
Jan 4 6.7° 19.4° -2° (1952) 28° (1969) 0.09" NA
Jan 5 7.2° 19.4° -2° (1952) 29° (1969) 0.1" NA
Jan 6 7.2° 19.4° 1° (1973) 29° (1962) 0.1" NA
Jan 7 7.2° 19.4° 1° (1973) 32° (1962) 0.1" NA
Jan 8 7.2° 19.4° -2° (1982) 31° (1962) 0.1" NA
Jan 9 7.2° 19.4° -1° (1972) 28° (1962) 0.11" NA
Jan 10 7.2° 20° 0° (1952) 27° (1967) 0.11" NA
Jan 11 7.2° 20° -1° (1952) 28° (1983) 0.11" NA
Jan 12 7.2° 20° 1° (1962) 28° (1983) 0.11" NA
Jan 13 7.2° 20° -3° (1962) 28° (1983) 0.11" NA
Jan 14 7.2° 20° -4° (1962) 29° (1974) 0.12" NA
Jan 15 7.2° 20° 0° (1962) 29° (1967) 0.12" NA
Jan 16 7.2° 20° 1° (1984) 29° (1976) 0.12" NA
Jan 17 7.2° 20° -1° (1984) 31° (1976) 0.12" NA
Jan 18 7.2° 20° 0° (1984) 34° (1971) 0.12" NA
Jan 19 7.8° 20° -1° (1979) 33° (1971) 0.12" NA
Jan 20 7.8° 20° 1° (1984) 30° (1971) 0.12" NA
Jan 21 7.8° 20° 2° (1980) 28° (1975) 0.12" NA
Jan 22 7.8° 20° -1° (1982) 27° (1968) 0.12" NA
Jan 23 7.8° 20° -1° (1982) 28° (1953) 0.12" NA
Jan 24 7.8° 20° -1° (1966) 28° (1974) 0.12" NA
Jan 25 7.8° 20° 1° (1965) 26° (1974) 0.13" NA
Jan 26 7.8° 20.6° -3° (1979) 32° (1971) 0.13" NA
Jan 27 7.8° 20.6° -4° (1979) 32° (1971) 0.13" NA
Jan 28 7.8° 20.6° -2° (1957) 31° (1971) 0.13" NA
Jan 29 7.8° 20.6° -6° (1979) 29° (1971) 0.12" NA
Jan 30 7.8° 20.6° -1° (1979) 29° (1971) 0.12" NA
Jan 31 7.8° 20.6° -1° (1979) 29° (1976) 0.12" NA
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