WEATHER IN Lewiston
Climate tables. Data for Lewiston.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -30.0 (1950) | -0.9 | 2.3 | 5.6 | 18.9 (1953) |
| february | -27.8 (1884) | -0.2 | 4.1 | 8.3 | 22.2 (1986) |
| march | -16.7 (1955) | 2.1 | 7.4 | 12.8 | 26.7 (1923) |
| april | -6.7 (1966) | 4.8 | 10.8 | 16.8 | 37.2 (1946) |
| may | -5.0 (1954) | 8.9 | 15.6 | 22.2 | 40.0 (1934) |
| june | 1.1 (1951) | 12.2 | 19.2 | 26.1 | 42.8 (1936) |
| july | 5.0 (1955) | 16.1 | 24.3 | 32.7 | 47.2 (1939) |
| august | 5.0 (1945) | 15.7 | 24.0 | 32.3 | 46.1 (1961) |
| september | -2.8 (1926) | 11.3 | 18.8 | 26.4 | 42.2 (1944) |
| october | -9.4 (2002) | 5.6 | 11.4 | 17.2 | 34.4 (1943) |
| november | -19.4 (1955) | 1.4 | 5.3 | 9.3 | 25.0 (1999) |
| december | -30.6 (1919) | -1.4 | 1.8 | 4.9 | 19.4 (1921) |
| year | -30.6 (1919) | 5.8 | 11.7 | 17.4 | 47.2 (1939) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 29 | 3 (2007) | 113 (1881) | 59 (1917) |
| february | 26 | 3 (1920) | 110 (1881) | 25 (1897) |
| march | 33 | 6 (1969) | 103 (1931) | 55 (1931) |
| april | 37 | 1 (1956) | 86 (1893) | 24 (1935) |
| may | 43 | 0.0 (1924) | 122 (1948) | 42 (1897) |
| june | 32 | 0.3 (1883) | 144 (1884) | 44 (1885) |
| july | 12 | 0.0 (1883) | 66 (1987) | 46 (1998) |
| august | 13 | 0.0 (1878) | 75 (1989) | 35 (1960) |
| september | 15 | 0.0 (1975) | 111 (1940) | 44 (1955) |
| october | 27 | 0.0 (1978) | 87 (1893) | 28 (1955) |
| november | 31 | 0.0 (1929) | 107 (1897) | 31 (1996) |
| december | 29 | 4 (1965) | 160 (1880) | 69 (1882) |
| year | 313 | 196 (2007) | 551 (1884) | 69 (1882) |
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 |