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
Sep 1 13.9° 25° 7° (1973) 36° (1988) 0.05" NA
Sep 2 13.9° 25° 9° (1975) 39° (1988) 0.05" NA
Sep 3 13.9° 25° 9° (1980) 36° (2003) 0.05" NA
Sep 4 13.3° 25° 9° (2002) 36° (1973) 0.05" NA
Sep 5 13.3° 25° 9° (2001) 33° (1975) 0.05" NA
Sep 6 13.3° 25° 8° (1992) 33° (1981) 0.05" NA
Sep 7 13.3° 25° 8° (1976) 38° (1981) 0.05" NA
Sep 8 13.3° 24.4° 8° (1973) 33° (1997) 0.06" NA
Sep 9 13.3° 24.4° 8° (1985) 33° (1980) 0.06" NA
Sep 10 13.3° 24.4° 9° (1999) 36° (1973) 0.06" NA
Sep 11 13.3° 24.4° 8° (1986) 32° (1975) 0.06" NA
Sep 12 12.8° 23.9° 10° (1978) 33° (1975) 0.06" NA
Sep 13 12.8° 23.9° 9° (1992) 33° (1999) 0.06" NA
Sep 14 12.8° 23.9° 7° (1986) 33° (1974) 0.06" NA
Sep 15 12.8° 23.9° 6° (1996) 36° (1981) 0.06" NA
Sep 16 12.8° 23.3° 7° (1978) 32° (1994) 0.06" NA
Sep 17 12.2° 23.3° 8° (1983) 33° (1991) 0.06" NA
Sep 18 12.2° 23.3° 7° (1988) 32° (1991) 0.07" NA
Sep 19 12.2° 23.3° 6° (1983) 33° (1974) 0.07" NA
Sep 20 12.2° 22.8° 8° (1989) 34° (1974) 0.07" NA
Sep 21 12.2° 22.8° 7° (1993) 33° (1974) 0.07" NA
Sep 22 12.2° 22.8° 7° (1981) 33° (1974) 0.07" NA
Sep 23 11.7° 22.2° 6° (2000) 34° (1974) 0.07" NA
Sep 24 11.7° 22.2° 6° (1984) 35° (1974) 0.07" NA
Sep 25 11.7° 22.2° 7° (2000) 34° (1991) 0.07" NA
Sep 26 11.7° 21.7° 8° (2000) 30° (1993) 0.07" NA
Sep 27 11.1° 21.7° 6° (1999) 34° (2003) 0.07" NA
Sep 28 11.1° 21.1° 6° (1983) 31° (1989) 0.07" NA
Sep 29 11.1° 21.1° 5° (1982) 31° (1987) 0.07" NA
Sep 30 11.1° 21.1° 6° (1983) 30° (1975) 0.08" NA
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