Portland, Oregon
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -11.1° (1979) 18.3° (2005) 6.24" NA
February 10° -13.3° (1989) 21.7° (1988) 5.07" NA
March 13° -4.4° (1989) 26.1° (1994) 4.51" NA
April 16° -0.6° (1975) 31.1° (2004) 3.1" NA
May 19° 2.2° (1985) 39.4° (1983) 2.49" NA
June 12° 23° 5° (1991) 38.3° (2006) 1.6" NA
July 14° 26° 8.3° (1996) 40° (2006) 0.76" NA
August 14° 26° 7.8° (1973) 41.1° (1981) 0.99" NA
September 13° 23° 5° (1982) 39.4° (1988) 1.87" NA
October 17° -0.6° (2002) 33.3° (1987) 3.39" NA
November 11° -5° (1993) 21.7° (1999) 6.39" NA
December -12.2° (1983) 19.4° (1993) 6.75" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 3.9° 8.3° -7° (1985) 15° (1999) 0.23" NA
Dec 2 3.9° 8.3° -7° (1985) 15° (1999) 0.23" NA
Dec 3 3.9° 8.3° 0° (1976) 14° (1982) 0.23" NA
Dec 4 3.9° 8.3° -3° (1994) 16° (1989) 0.23" NA
Dec 5 3.3° 8.3° -2° (1994) 13° (1979) 0.23" NA
Dec 6 3.3° 7.8° -3° (1994) 17° (1999) 0.22" NA
Dec 7 3.3° 7.8° -3° (1978) 13° (1974) 0.22" NA
Dec 8 3.3° 7.8° -2° (1980) 17° (1999) 0.22" NA
Dec 9 3.3° 7.8° -3° (1980) 17° (1993) 0.22" NA
Dec 10 3.3° 7.8° -1° (1985) 19° (1993) 0.22" NA
Dec 11 3.3° 7.8° -2° (1985) 18° (1999) 0.22" NA
Dec 12 2.8° 7.8° -2° (1985) 18° (1995) 0.22" NA
Dec 13 2.8° 7.8° -3° (1985) 13° (1998) 0.22" NA
Dec 14 2.8° 7.2° -3° (1985) 15° (2002) 0.22" NA
Dec 15 2.8° 7.2° -1° (1985) 17° (1999) 0.22" NA
Dec 16 2.8° 7.2° -2° (1978) 16° (1974) 0.22" NA
Dec 17 2.8° 7.2° -2° (1985) 14° (1994) 0.22" NA
Dec 18 2.8° 7.2° -4° (1984) 14° (1979) 0.22" NA
Dec 19 2.8° 7.2° -8° (1990) 16° (1994) 0.22" NA
Dec 20 2.8° 7.2° -11° (1990) 17° (1994) 0.21" NA
Dec 21 2.8° 7.2° -12° (1990) 16° (1980) 0.21" NA
Dec 22 2.8° 7.2° -11° (1983) 12° (1980) 0.21" NA
Dec 23 2.8° 7.2° -12° (1983) 12° (1994) 0.21" NA
Dec 24 2.8° 7.2° -12° (1983) 14° (1980) 0.21" NA
Dec 25 2.8° 7.2° -7° (1983) 17° (1980) 0.21" NA
Dec 26 2.2° 7.2° -4° (1983) 17° (1980) 0.21" NA
Dec 27 2.2° 7.2° -3° (1978) 15° (1980) 0.21" NA
Dec 28 2.2° 7.2° -7° (1990) 13° (1999) 0.21" NA
Dec 29 2.2° 7.2° -11° (1990) 13° (1975) 0.21" NA
Dec 30 2.2° 6.7° -10° (1990) 17° (1980) 0.21" NA
Dec 31 2.2° 6.7° -10° (1978) 16° (1996) 0.21" NA
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