WEATHER IN Portland
Climate tables. Data for Portland.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -32.2 (1971) | -9.1 | -4.4 | 0.2 | 19.4 (2007) |
| february | -39.4 (1943) | -8.2 | -3.2 | 1.7 | 17.8 (1957) |
| march | -29.4 (1950) | -3.3 | 1.2 | 5.7 | 31.1 (1998) |
| april | -13.3 (1954) | 1.9 | 7.0 | 12.1 | 33.3 (2009) |
| may | -5.0 (1956) | 7.5 | 12.7 | 17.9 | 35.6 (1937) |
| june | 0.6 (1944) | 12.8 | 17.9 | 23.1 | 36.7 (1991) |
| july | 4.4 (1962) | 16.2 | 21.3 | 26.4 | 39.4 (1911) |
| august | 0.6 (1965) | 15.4 | 20.7 | 25.9 | 39.4 (1975) |
| september | -5.0 (1941) | 11.2 | 16.4 | 21.7 | 35.6 (1937) |
| october | -9.4 (1976) | 5.0 | 10.2 | 15.3 | 31.1 (1963) |
| november | -21.1 (1875) | -0.2 | 4.4 | 9.1 | 23.3 (2003) |
| december | -29.4 (1917) | -5.3 | -0.9 | 3.5 | 21.7 (2001) |
| year | -39.4 (1943) | 2.8 | 8.0 | 13.2 | 39.4 (1911) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 89 | 7 (2004) | 312 (1935) | 90 (1977) |
| february | 90 | 1 (1987) | 235 (1900) | 97 (2010) |
| march | 104 | 2 (1915) | 286 (2010) | 88 (1951) |
| april | 112 | 7 (1999) | 252 (1973) | 132 (1973) |
| may | 93 | 12 (1965) | 394 (1850) | 121 (1916) |
| june | 105 | 14 (1908) | 276 (1917) | 111 (1922) |
| july | 87 | 16 (1965) | 275 (1915) | 108 (1939) |
| august | 91 | 5 (1865) | 387 (1991) | 197 (1991) |
| september | 96 | 8 (1948) | 275 (2008) | 190 (1954) |
| october | 133 | 7 (1947) | 428 (1996) | 298 (1996) |
| november | 108 | 14 (1939) | 343 (1983) | 128 (2009) |
| december | 114 | 5 (1865) | 246 (1969) | 89 (1990) |
| year | 1200 | 642 (1941) | 1687 (2005) | 298 (1996) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |