Arco, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -35° (1985) 52° (1962) 0.82" NA
February 10° 36° -31° (1996) 59° (1991) 1.05" NA
March 21° 46° -19° (1960) 71° (1966) 0.86" NA
April 29° 58° 5° (1978) 86° (1987) 0.75" NA
May 37° 67° 11° (1972) 94° (2003) 1.32" NA
June 43° 77° 21° (1954) 97° (1988) 0.9" NA
July 48° 85° 29° (1986) 102° (1960) 0.83" NA
August 47° 83° 25° (1992) 100° (1961) 0.78" NA
September 38° 74° 15° (1985) 96° (1950) 0.7" NA
October 29° 61° 4° (2002) 83° (1988) 0.63" NA
November 18° 42° -21° (1977) 69° (1953) 0.8" NA
December 30° -45° (1983) 59° (1976) 0.81" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 43° 79° 30° (1965) 92° (1950) 0.03" NA
Sep 2 42° 78° 24° (1977) 91° (1988) 0.03" NA
Sep 3 42° 78° 27° (1975) 92° (1988) 0.03" NA
Sep 4 42° 78° 27° (1969) 94° (1950) 0.03" NA
Sep 5 41° 77° 29° (1956) 96° (1950) 0.03" NA
Sep 6 41° 77° 26° (1996) 94° (1955) 0.03" NA
Sep 7 41° 77° 27° (1992) 91° (1955) 0.03" NA
Sep 8 40° 76° 31° (1948) 90° (1955) 0.03" NA
Sep 9 40° 76° 25° (1959) 89° (1979) 0.03" NA
Sep 10 40° 75° 24° (1977) 89° (1959) 0.03" NA
Sep 11 39° 75° 31° (1983) 91° (1990) 0.02" NA
Sep 12 39° 75° 27° (1949) 91° (1990) 0.02" NA
Sep 13 39° 74° 22° (1949) 89° (1953) 0.02" NA
Sep 14 38° 74° 23° (1992) 91° (1990) 0.02" NA
Sep 15 38° 74° 23° (1970) 90° (1990) 0.02" NA
Sep 16 38° 73° 25° (1970) 89° (1990) 0.02" NA
Sep 17 37° 73° 25° (1965) 88° (1981) 0.02" NA
Sep 18 37° 73° 19° (1971) 87° (1962) 0.02" NA
Sep 19 37° 72° 20° (1965) 87° (1952) 0.02" NA
Sep 20 36° 72° 23° (1950) 86° (1984) 0.02" NA
Sep 21 36° 72° 21° (1986) 85° (1966) 0.02" NA
Sep 22 36° 71° 20° (1956) 87° (1987) 0.02" NA
Sep 23 36° 71° 22° (1977) 90° (1990) 0.02" NA
Sep 24 35° 71° 17° (1972) 88° (1987) 0.02" NA
Sep 25 35° 70° 19° (1953) 87° (1987) 0.02" NA
Sep 26 35° 70° 21° (1971) 88° (1952) 0.02" NA
Sep 27 35° 70° 19° (1971) 85° (1960) 0.02" NA
Sep 28 34° 69° 16° (1971) 83° (2003) 0.02" NA
Sep 29 34° 69° 15° (1985) 85° (1963) 0.02" NA
Sep 30 34° 69° 16° (1950) 84° (1957) 0.02" NA
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