Portland, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -18.9° (1950) 18.9° (2005) 5.07" 1.6"
February 10° -19.4° (1950) 21.7° (1988) 4.18" 1.6"
March 13° -7.2° (1989) 28.3° (1947) 3.71" 0.1"
April 16° -1.7° (1955) 32.2° (1998) 2.64" 0"
May 19° -1.7° (1954) 37.8° (1983) 2.38" 0"
June 12° 23° 3.9° (1966) 38.9° (2006) 1.59" 0"
July 14° 26° 6.1° (1955) 41.7° (1965) 0.72" 0"
August 14° 27° 6.7° (1980) 41.7° (1981) 0.93" 0"
September 12° 24° 1.1° (1965) 40.6° (1988) 1.65" 0"
October 17° -3.3° (1971) 33.3° (1987) 2.88" 0"
November 11° -10.6° (1985) 22.8° (1975) 5.61" 0.6"
December -14.4° (1964) 18.3° (1993) 5.71" 1.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 2.8° 8.3° -7° (1985) 17° (1958) 0.2" NA
Dec 2 2.8° 8.3° -5° (1985) 17° (1958) 0.2" NA
Dec 3 2.8° 8.3° -2° (1988) 17° (1979) 0.2" NA
Dec 4 2.2° 8.3° -5° (1972) 18° (1945) 0.2" NA
Dec 5 2.2° 8.3° -7° (1972) 15° (1970) 0.19" NA
Dec 6 2.2° 8.3° -6° (1972) 16° (1988) 0.19" NA
Dec 7 2.2° 7.8° -8° (1972) 14° (1970) 0.19" NA
Dec 8 2.2° 7.8° -13° (1972) 15° (1975) 0.19" NA
Dec 9 2.2° 7.8° -9° (1972) 16° (1987) 0.19" NA
Dec 10 2.2° 7.8° -9° (1972) 18° (1993) 0.19" NA
Dec 11 1.7° 7.8° -9° (1972) 16° (1955) 0.19" NA
Dec 12 1.7° 7.8° -10° (1972) 17° (1995) 0.19" NA
Dec 13 1.7° 7.2° -8° (1972) 16° (1977) 0.19" NA
Dec 14 1.7° 7.2° -5° (1972) 16° (2006) 0.19" NA
Dec 15 1.7° 7.2° -5° (1972) 15° (1959) 0.18" NA
Dec 16 1.7° 7.2° -14° (1964) 16° (1974) 0.18" NA
Dec 17 1.7° 7.2° -14° (1964) 14° (1999) 0.18" NA
Dec 18 1.7° 7.2° -12° (1964) 14° (1972) 0.18" NA
Dec 19 1.1° 7.2° -10° (1964) 15° (1972) 0.18" NA
Dec 20 1.1° 7.2° -11° (1967) 15° (1974) 0.18" NA
Dec 21 1.1° 7.2° -11° (1990) 17° (1940) 0.18" NA
Dec 22 1.1° 7.2° -11° (1990) 16° (1940) 0.18" NA
Dec 23 1.1° 7.2° -12° (1998) 18° (1950) 0.18" NA
Dec 24 1.1° 7.2° -9° (1990) 16° (1980) 0.18" NA
Dec 25 1.1° 7.2° -7° (1990) 18° (1980) 0.18" NA
Dec 26 1.1° 6.7° -6° (1983) 17° (1980) 0.18" NA
Dec 27 1.1° 6.7° -5° (1971) 16° (1980) 0.17" NA
Dec 28 1.1° 6.7° -7° (1990) 14° (1945) 0.17" NA
Dec 29 1.1° 6.7° -10° (1990) 14° (1950) 0.17" NA
Dec 30 1.1° 6.7° -13° (1968) 16° (1980) 0.17" NA
Dec 31 1.1° 6.7° -13° (1968) 14° (1996) 0.17" NA
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