Ontario, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 35° -25° (1962) 64° (1953) 1.18" 3.4"
February 23° 44° -24° (1989) 66° (1963) 0.83" 1.2"
March 30° 56° 10° (2002) 85° (1966) 1.01" 0.3"
April 36° 65° 17° (1956) 94° (1977) 0.8" 0"
May 44° 75° 25° (1975) 103° (1986) 1.28" 0"
June 52° 84° 31° (1976) 108° (1970) 0.69" 0"
July 58° 94° 34° (1986) 114° (2002) 0.3" 0"
August 55° 92° 33° (1960) 113° (1961) 0.18" 0"
September 45° 81° 24° (1985) 104° (1967) 0.41" 0"
October 34° 66° 13° (2002) 94° (1997) 0.63" 0"
November 26° 48° -6° (1993) 78° (2006) 1.1" 0.3"
December 20° 36° -23° (1972) 66° (1955) 1.68" 5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 22° 40° 9° (1969) 59° (1995) 0.05" 0.1"
Dec 2 22° 39° 9° (1976) 62° (1995) 0.05" 0.1"
Dec 3 22° 39° 9° (1969) 60° (1977) 0.04" 0.1"
Dec 4 21° 39° -4° (1992) 57° (1975) 0.05" 0.1"
Dec 5 21° 38° -11° (1992) 60° (2007) 0.05" 0.1"
Dec 6 21° 38° -5° (1992) 63° (1987) 0.05" 0"
Dec 7 21° 38° 0° (1972) 54° (1987) 0.05" 0.1"
Dec 8 21° 37° 0° (2005) 54° (1993) 0.05" 0.1"
Dec 9 20° 37° -18° (1972) 52° (1993) 0.05" 0.1"
Dec 10 20° 37° -23° (1972) 54° (1993) 0.05" 0.1"
Dec 11 20° 37° -21° (1972) 49° (1956) 0.05" 0.1"
Dec 12 20° 36° -4° (1985) 55° (1991) 0.06" 0.2"
Dec 13 20° 36° -13° (1972) 65° (1995) 0.05" 0.1"
Dec 14 19° 36° -13° (1972) 57° (2002) 0.05" 0.2"
Dec 15 19° 36° -15° (1972) 58° (2002) 0.06" 0.2"
Dec 16 19° 35° -5° (1985) 54° (2002) 0.06" 0.1"
Dec 17 19° 35° -11° (1964) 54° (2002) 0.06" 0.2"
Dec 18 19° 35° -4° (1985) 54° (1973) 0.06" 0.2"
Dec 19 19° 35° -5° (1985) 48° (1960) 0.06" 0.2"
Dec 20 19° 35° -7° (1990) 55° (1955) 0.06" 0.2"
Dec 21 19° 35° -20° (1990) 59° (1957) 0.05" 0.2"
Dec 22 19° 35° -20° (1990) 66° (1955) 0.06" 0.2"
Dec 23 19° 35° -13° (1990) 59° (1955) 0.06" 0.2"
Dec 24 19° 35° -14° (1990) 59° (1964) 0.05" 0.2"
Dec 25 19° 34° -7° (1985) 51° (1964) 0.06" 0.2"
Dec 26 19° 34° -8° (1985) 55° (1955) 0.06" 0.3"
Dec 27 19° 34° -9° (1985) 53° (1955) 0.06" 0.2"
Dec 28 19° 34° -8° (1985) 60° (1965) 0.06" 0.2"
Dec 29 19° 34° -12° (1990) 55° (1965) 0.05" 0.2"
Dec 30 19° 34° -12° (1985) 56° (1996) 0.06" 0.3"
Dec 31 19° 34° -3° (1974) 53° (1996) 0.05" 0.2"
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