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
Oct 1 15° 30.6° 7° (1982) 42° (1980) 0.01" NA
Oct 2 15° 30.6° 8° (1954) 39° (1980) 0" NA
Oct 3 15° 30.6° 8° (1954) 39° (1958) 0" NA
Oct 4 15° 30.6° 8° (1954) 39° (1953) 0" NA
Oct 5 14.4° 30° 8° (1954) 41° (1964) 0" NA
Oct 6 14.4° 30° 8° (1982) 39° (1953) 0" NA
Oct 7 14.4° 30° 9° (1954) 38° (1964) 0" NA
Oct 8 14.4° 29.4° 10° (1962) 38° (1951) 0" NA
Oct 9 13.9° 29.4° 7° (1961) 40° (1971) 0" NA
Oct 10 13.9° 29.4° 8° (1960) 41° (1971) 0" NA
Oct 11 13.9° 29.4° 8° (1960) 39° (1971) 0" NA
Oct 12 13.9° 28.9° 8° (1960) 38° (1971) 0" NA
Oct 13 13.9° 28.9° 6° (1981) 39° (1978) 0" NA
Oct 14 13.3° 28.9° 4° (1981) 39° (1961) 0.01" NA
Oct 15 13.3° 28.3° 6° (1951) 39° (1958) 0.01" NA
Oct 16 13.3° 28.3° 6° (1981) 41° (1958) 0.01" NA
Oct 17 13.3° 28.3° 6° (1980) 39° (1958) 0.01" NA
Oct 18 13.3° 27.8° 6° (1980) 37° (1967) 0.01" NA
Oct 19 12.8° 27.8° 6° (1953) 36° (1964) 0.01" NA
Oct 20 12.8° 27.8° 7° (1953) 36° (1964) 0.01" NA
Oct 21 12.8° 27.8° 3° (1953) 36° (1964) 0.01" NA
Oct 22 12.8° 27.2° 1° (1953) 38° (1965) 0.01" NA
Oct 23 12.2° 27.2° 4° (1953) 39° (1968) 0.01" NA
Oct 24 12.2° 27.2° 4° (1953) 40° (1968) 0.01" NA
Oct 25 12.2° 26.7° 6° (1971) 37° (1965) 0.02" NA
Oct 26 12.2° 26.7° 6° (1951) 36° (1965) 0.02" NA
Oct 27 11.7° 26.7° 7° (1952) 37° (1965) 0.02" NA
Oct 28 11.7° 26.1° 7° (1978) 36° (1965) 0.02" NA
Oct 29 11.7° 26.1° 3° (1956) 36° (1962) 0.02" NA
Oct 30 11.7° 26.1° 3° (1971) 36° (1965) 0.02" NA
Oct 31 11.1° 25.6° 2° (1979) 36° (1966) 0.03" NA
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