Boise, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° 37° -17° (1950) 63° (1953) 1.39" 4.9"
February 29° 45° -15° (1989) 71° (1992) 1.14" 3.3"
March 34° 54° 6° (1971) 81° (1978) 1.41" 1.5"
April 39° 62° 19° (1968) 92° (1987) 1.27" 0.3"
May 47° 71° 22° (1982) 99° (2003) 1.27" 0.1"
June 54° 80° 31° (1995) 109° (1940) 0.74" 0"
July 60° 89° 35° (1986) 111° (1960) 0.39" 0"
August 60° 88° 34° (1992) 110° (1961) 0.3" 0"
September 51° 77° 23° (1970) 102° (1945) 0.76" 0"
October 41° 64° 11° (1971) 94° (1997) 0.76" 0.1"
November 32° 48° -3° (1985) 78° (1999) 1.38" 2.9"
December 24° 37° -25° (1990) 65° (1964) 1.38" 6.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 43° 66° 27° (1954) 88° (1985) 0.04" NA
May 2 43° 66° 23° (1988) 91° (1947) 0.04" NA
May 3 43° 67° 28° (1969) 90° (1966) 0.04" NA
May 4 44° 67° 26° (1982) 93° (1966) 0.04" NA
May 5 44° 67° 22° (1982) 94° (1966) 0.04" NA
May 6 44° 68° 27° (1968) 95° (1947) 0.05" NA
May 7 44° 68° 26° (1981) 93° (1992) 0.05" NA
May 8 45° 68° 28° (2002) 94° (1987) 0.05" NA
May 9 45° 69° 29° (1999) 87° (1987) 0.04" NA
May 10 45° 69° 27° (1999) 92° (1940) 0.04" NA
May 11 45° 69° 27° (1943) 93° (1941) 0.04" NA
May 12 46° 70° 24° (1985) 94° (1993) 0.04" NA
May 13 46° 70° 26° (1974) 94° (1959) 0.04" NA
May 14 46° 70° 28° (1986) 91° (1987) 0.04" NA
May 15 46° 70° 28° (1990) 93° (2006) 0.04" NA
May 16 47° 71° 28° (1974) 94° (2006) 0.04" NA
May 17 47° 71° 30° (1942) 92° (2006) 0.04" NA
May 18 47° 71° 30° (1971) 93° (1954) 0.04" NA
May 19 47° 72° 28° (1989) 90° (2006) 0.04" NA
May 20 48° 72° 33° (1971) 94° (1958) 0.04" NA
May 21 48° 72° 33° (1974) 90° (1980) 0.04" NA
May 22 48° 73° 28° (1960) 93° (1988) 0.04" NA
May 23 48° 73° 32° (1966) 95° (2001) 0.04" NA
May 24 49° 73° 33° (1975) 97° (2003) 0.04" NA
May 25 49° 73° 30° (1975) 96° (1961) 0.04" NA
May 26 49° 74° 33° (1973) 98° (1966) 0.04" NA
May 27 49° 74° 32° (1991) 94° (1983) 0.04" NA
May 28 50° 74° 34° (1982) 99° (2003) 0.04" NA
May 29 50° 75° 32° (1976) 95° (2003) 0.04" NA
May 30 50° 75° 33° (1979) 98° (1986) 0.04" NA
May 31 50° 75° 32° (1978) 97° (1986) 0.04" NA
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