Potomac, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -44° (2004) 60° (2005) 1.48" NA
February 11° 37° -42° (1981) 64° (1995) 1.09" NA
March 19° 46° -30° (1965) 76° (2004) 0.79" NA
April 25° 56° -4° (2002) 86° (1987) 1.01" NA
May 32° 65° 13° (1999) 97° (1986) 1.78" NA
June 39° 73° 23° (1965) 97° (1977) 1.82" NA
July 42° 82° 24° (1971) 103° (2002) 0.97" NA
August 39° 82° 22° (1965) 102° (1969) 1.05" NA
September 32° 71° 10° (2000) 97° (1998) 1.02" NA
October 23° 58° -15° (2002) 88° (1992) 1.02" NA
November 17° 38° -21° (1993) 72° (1999) 1.45" NA
December 29° -50° (1983) 62° (1975) 1.66" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 28° 61° 15° (1966) 77° (1981) 0.05" NA
May 2 29° 62° 15° (1970) 84° (1985) 0.05" NA
May 3 29° 62° 17° (2006) 86° (1966) 0.05" NA
May 4 29° 62° 19° (1991) 86° (1966) 0.05" NA
May 5 29° 62° 17° (2006) 88° (1966) 0.05" NA
May 6 30° 63° 17° (1999) 85° (1987) 0.05" NA
May 7 30° 63° 19° (1999) 87° (1987) 0.05" NA
May 8 30° 63° 13° (1999) 86° (1987) 0.05" NA
May 9 31° 63° 15° (2002) 82° (1987) 0.05" NA
May 10 31° 64° 16° (1968) 83° (1994) 0.05" NA
May 11 31° 64° 19° (2002) 83° (1994) 0.05" NA
May 12 31° 64° 15° (1985) 88° (1993) 0.06" NA
May 13 32° 65° 16° (1985) 90° (1993) 0.06" NA
May 14 32° 65° 21° (1983) 89° (1993) 0.06" NA
May 15 32° 65° 20° (1986) 86° (1973) 0.06" NA
May 16 32° 65° 24° (1977) 89° (2006) 0.06" NA
May 17 33° 66° 21° (2003) 89° (2006) 0.06" NA
May 18 33° 66° 18° (1965) 88° (2006) 0.06" NA
May 19 33° 66° 22° (1968) 87° (2006) 0.06" NA
May 20 33° 66° 22° (2003) 87° (2006) 0.06" NA
May 21 34° 67° 23° (1971) 88° (1980) 0.06" NA
May 22 34° 67° 22° (1984) 84° (1985) 0.06" NA
May 23 34° 67° 24° (1986) 87° (1985) 0.06" NA
May 24 35° 67° 26° (2005) 88° (2001) 0.06" NA
May 25 35° 68° 24° (1967) 90° (2001) 0.06" NA
May 26 35° 68° 21° (1967) 93° (1986) 0.06" NA
May 27 35° 68° 26° (1999) 91° (1986) 0.06" NA
May 28 36° 68° 27° (1977) 93° (1986) 0.06" NA
May 29 36° 69° 25° (1973) 97° (1986) 0.07" NA
May 30 36° 69° 22° (1977) 95° (1986) 0.07" NA
May 31 36° 69° 22° (1968) 93° (1986) 0.07" NA
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