Arco, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 30° -35° (1985) 52° (1962) 1" NA
February 12° 34° -31° (1996) 59° (1991) 0.78" NA
March 24° 46° -19° (1960) 71° (1966) 0.86" NA
April 32° 58° 5° (1978) 86° (1987) 1" NA
May 40° 67° 11° (1972) 94° (2003) 1.27" NA
June 46° 76° 21° (1954) 97° (1988) 1.28" NA
July 52° 86° 29° (1986) 102° (1960) 0.71" NA
August 50° 85° 25° (1992) 100° (1961) 0.62" NA
September 41° 75° 15° (1985) 96° (1950) 0.64" NA
October 32° 61° 4° (2002) 83° (1988) 0.63" NA
November 20° 42° -21° (1977) 69° (1953) 0.71" NA
December 30° -45° (1983) 59° (1976) 0.95" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 35° 63° 11° (1972) 80° (1981) 0.04" NA
May 2 36° 63° 22° (1972) 80° (1985) 0.05" NA
May 3 36° 64° 20° (1988) 83° (1966) 0.04" NA
May 4 36° 64° 23° (1965) 86° (1966) 0.05" NA
May 5 37° 64° 20° (1977) 84° (1966) 0.04" NA
May 6 37° 65° 20° (1961) 83° (1992) 0.03" NA
May 7 37° 65° 20° (1979) 87° (1992) 0.04" NA
May 8 37° 65° 20° (1968) 85° (1987) 0.04" NA
May 9 38° 66° 19° (1990) 83° (1954) 0.03" NA
May 10 38° 66° 23° (1983) 85° (1960) 0.04" NA
May 11 38° 66° 17° (1967) 85° (1960) 0.03" NA
May 12 39° 66° 20° (1967) 85° (2001) 0.04" NA
May 13 39° 67° 22° (1983) 85° (2001) 0.04" NA
May 14 39° 67° 23° (1974) 85° (1987) 0.04" NA
May 15 39° 67° 26° (1983) 84° (1987) 0.04" NA
May 16 40° 68° 21° (1974) 87° (1988) 0.03" NA
May 17 40° 68° 24° (1984) 85° (2006) 0.05" NA
May 18 40° 68° 24° (1960) 87° (2006) 0.03" NA
May 19 40° 68° 25° (1971) 90° (1954) 0.04" NA
May 20 41° 69° 22° (1950) 88° (1954) 0.04" NA
May 21 41° 69° 26° (1976) 84° (1958) 0.04" NA
May 22 41° 69° 23° (1953) 88° (1950) 0.04" NA
May 23 41° 69° 20° (1986) 85° (1967) 0.05" NA
May 24 42° 70° 22° (1989) 87° (2001) 0.04" NA
May 25 42° 70° 24° (1960) 86° (2003) 0.05" NA
May 26 42° 70° 22° (1975) 86° (1958) 0.04" NA
May 27 42° 70° 28° (1973) 86° (1958) 0.05" NA
May 28 43° 71° 28° (1982) 93° (2003) 0.04" NA
May 29 43° 71° 29° (1977) 94° (2003) 0.05" NA
May 30 43° 71° 27° (1973) 92° (2003) 0.05" NA
May 31 43° 72° 26° (1982) 90° (1986) 0.04" NA
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