WEATHER IN Boise
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -28 (1888) | 25.5 | 32.2 | 38.8 | 63 (1953) |
| february | -15 (1989) | 29.0 | 37.5 | 46.0 | 70 (1986) |
| march | 5 (1906) | 34.9 | 45.2 | 55.5 | 82 (1877) |
| april | 11 (1936) | 39.6 | 50.9 | 62.3 | 92 (1946) |
| may | 22 (1982) | 47.5 | 59.9 | 72.3 | 100 (1897) |
| june | 30 (1901) | 54.1 | 67.8 | 81.4 | 109 (1940) |
| july | 35 (1986) | 61.9 | 77.3 | 92.7 | 111 (1898) |
| august | 32 (1892) | 60.8 | 75.8 | 90.7 | 110 (1961) |
| september | 23 (1970) | 52.6 | 66.3 | 80.0 | 102 (1945) |
| october | 11 (1971) | 41.5 | 53.2 | 64.8 | 94 (1997) |
| november | -10 (1896) | 31.7 | 40.3 | 48.8 | 78 (1999) |
| december | -25 (1990) | 25.4 | 32.1 | 38.8 | 70 (1939) |
| year | -28 (1888) | 41.2 | 52.4 | 63.5 | 111 (1898) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 1.41 | 0.12 (1949) | 5.29 (1875) | 1.40 (1896) |
| february | 1.00 | 0.04 (1889) | 3.70 (1986) | 1.26 (1907) |
| march | 1.33 | 0.00 (1895) | 5.39 (1904) | 2.46 (1904) |
| april | 1.23 | 0.09 (1885) | 3.34 (1912) | 1.27 (1969) |
| may | 1.45 | 0.00 (1865) | 4.90 (1896) | 1.77 (1990) |
| june | 0.75 | 0.00 (1893) | 3.41 (1884) | 1.91 (1958) |
| july | 0.21 | 0.00 (1864) | 2.01 (1913) | 1.22 (1912) |
| august | 0.17 | 0.00 (1868) | 2.37 (1968) | 1.61 (1979) |
| september | 0.43 | 0.00 (1864) | 2.93 (1986) | 1.73 (1976) |
| october | 0.81 | 0.00 (1869) | 4.06 (1883) | 1.47 (1912) |
| november | 1.18 | 0.00 (1890) | 4.43 (1874) | 0.92 (1898) |
| december | 1.54 | 0.01 (1877) | 5.67 (1884) | 1.14 (1884) |
| year | 11.73 | 6.64 (1966) | 22.95 (1896) | 2.46 (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 |