WEATHER IN Boise
Climate tables. Data for Boise.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -33.3 (1888) | -3.6 | 0.1 | 3.8 | 17.2 (1953) |
| february | -26.1 (1989) | -1.7 | 3.1 | 7.8 | 21.1 (1986) |
| march | -15.0 (1906) | 1.6 | 7.3 | 13.1 | 27.8 (1877) |
| april | -11.7 (1936) | 4.2 | 10.5 | 16.8 | 33.3 (1946) |
| may | -5.6 (1982) | 8.6 | 15.5 | 22.4 | 37.8 (1897) |
| june | -1.1 (1901) | 12.3 | 19.9 | 27.4 | 42.8 (1940) |
| july | 1.7 (1986) | 16.6 | 25.2 | 33.7 | 43.9 (1898) |
| august | 0.0 (1892) | 16.0 | 24.3 | 32.6 | 43.3 (1961) |
| september | -5.0 (1970) | 11.4 | 19.1 | 26.7 | 38.9 (1945) |
| october | -11.7 (1971) | 5.3 | 11.8 | 18.2 | 34.4 (1997) |
| november | -23.3 (1896) | -0.2 | 4.6 | 9.3 | 25.6 (1999) |
| december | -31.7 (1990) | -3.7 | 0.1 | 3.8 | 21.1 (1939) |
| year | -33.3 (1888) | 5.1 | 11.3 | 17.5 | 43.9 (1898) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 36 | 3 (1949) | 134 (1875) | 36 (1896) |
| february | 25 | 1 (1889) | 94 (1986) | 32 (1907) |
| march | 34 | 0.0 (1895) | 137 (1904) | 63 (1904) |
| april | 31 | 2 (1885) | 85 (1912) | 32 (1969) |
| may | 37 | 0.0 (1865) | 125 (1896) | 45 (1990) |
| june | 19 | 0.0 (1893) | 87 (1884) | 49 (1958) |
| july | 5 | 0.0 (1864) | 51 (1913) | 31 (1912) |
| august | 4 | 0.0 (1868) | 60 (1968) | 41 (1979) |
| september | 11 | 0.0 (1864) | 74 (1986) | 44 (1976) |
| october | 21 | 0.0 (1869) | 103 (1883) | 37 (1912) |
| november | 30 | 0.0 (1890) | 113 (1874) | 23 (1898) |
| december | 39 | 0.3 (1877) | 144 (1884) | 29 (1884) |
| year | 298 | 169 (1966) | 583 (1896) | 63 (1904) |
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 |