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
May 1 7.8° 17.8° 4° (1988) 29° (1998) 0.09" NA
May 2 7.8° 17.8° 4° (1997) 25° (1992) 0.09" NA
May 3 7.8° 17.8° 5° (1974) 32° (1992) 0.09" NA
May 4 7.8° 18.3° 3° (1996) 33° (1992) 0.09" NA
May 5 8.3° 18.3° 3° (1978) 31° (1992) 0.09" NA
May 6 8.3° 18.3° 2° (1978) 33° (1987) 0.09" NA
May 7 8.3° 18.3° 4° (2002) 36° (1987) 0.09" NA
May 8 8.3° 18.9° 3° (2002) 34° (1987) 0.09" NA
May 9 8.3° 18.9° 4° (1999) 31° (1987) 0.09" NA
May 10 8.9° 18.9° 3° (1999) 31° (1993) 0.08" NA
May 11 8.9° 18.9° 3° (1985) 33° (1997) 0.08" NA
May 12 8.9° 18.9° 2° (1985) 29° (1997) 0.08" NA
May 13 8.9° 19.4° 4° (1974) 31° (1975) 0.08" NA
May 14 8.9° 19.4° 3° (1986) 29° (1995) 0.08" NA
May 15 8.9° 19.4° 4° (1974) 27° (1976) 0.08" NA
May 16 9.4° 19.4° 4° (2002) 31° (1985) 0.08" NA
May 17 9.4° 19.4° 3° (1974) 31° (1993) 0.08" NA
May 18 9.4° 19.4° 3° (2003) 27° (1997) 0.08" NA
May 19 9.4° 20° 4° (1982) 29° (1978) 0.08" NA
May 20 9.4° 20° 3° (1975) 32° (1978) 0.08" NA
May 21 9.4° 20° 6° (1975) 33° (1988) 0.08" NA
May 22 10° 20° 6° (1986) 37° (2001) 0.08" NA
May 23 10° 20° 5° (1978) 33° (1983) 0.08" NA
May 24 10° 20.6° 5° (1975) 35° (1992) 0.07" NA
May 25 10° 20.6° 4° (1975) 32° (1979) 0.07" NA
May 26 10° 20.6° 6° (1977) 32° (2005) 0.07" NA
May 27 10° 20.6° 7° (1977) 36° (2005) 0.07" NA
May 28 10° 20.6° 6° (1976) 39° (1983) 0.07" NA
May 29 10.6° 20.6° 5° (2001) 31° (1983) 0.07" NA
May 30 10.6° 20.6° 7° (1999) 33° (1986) 0.07" NA
May 31 10.6° 21.1° 7° (1976) 34° (2001) 0.07" NA
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