Helmville, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -43° (1979) 55° (1989) 0.95" NA
February 35° -48° (1982) 63° (1995) 0.65" NA
March 18° 44° -24° (1989) 74° (2004) 0.55" NA
April 24° 55° 1° (1982) 83° (1987) 0.85" NA
May 31° 64° 14° (1999) 93° (1986) 1.76" NA
June 37° 72° 24° (1999) 95° (1988) 1.67" NA
July 40° 80° 28° (1994) 99° (2003) 1.15" NA
August 38° 80° 21° (1992) 98° (2003) 1.24" NA
September 30° 70° 9° (2000) 93° (1998) 0.99" NA
October 22° 57° -13° (1991) 88° (1992) 0.82" NA
November 15° 39° -23° (1985) 72° (1999) 0.96" NA
December 29° -45° (1983) 58° (1980) 0.99" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 27° 60° 19° (1995) 79° (1987) 0.04" NA
May 2 27° 60° 18° (2006) 78° (2000) 0.05" NA
May 3 28° 60° 19° (2001) 81° (1998) 0.05" NA
May 4 28° 61° 18° (2002) 81° (1998) 0.05" NA
May 5 28° 61° 16° (1996) 78° (1992) 0.05" NA
May 6 28° 61° 16° (1996) 81° (1992) 0.05" NA
May 7 29° 61° 18° (2001) 84° (1992) 0.05" NA
May 8 29° 62° 14° (1999) 85° (1987) 0.05" NA
May 9 29° 62° 15° (1999) 84° (1987) 0.05" NA
May 10 29° 62° 19° (2002) 82° (1994) 0.06" NA
May 11 30° 63° 18° (2002) 80° (1993) 0.06" NA
May 12 30° 63° 19° (1992) 86° (1993) 0.06" NA
May 13 30° 63° 17° (1985) 85° (1993) 0.06" NA
May 14 30° 63° 21° (1983) 82° (1993) 0.06" NA
May 15 31° 64° 25° (1988) 79° (1987) 0.06" NA
May 16 31° 64° 20° (1986) 85° (2006) 0.06" NA
May 17 31° 64° 23° (1992) 88° (2006) 0.06" NA
May 18 31° 64° 23° (1988) 85° (2006) 0.06" NA
May 19 31° 65° 22° (2003) 87° (2006) 0.06" NA
May 20 32° 65° 20° (2001) 87° (2006) 0.06" NA
May 21 32° 65° 20° (2001) 79° (1980) 0.06" NA
May 22 32° 66° 21° (1987) 86° (1980) 0.06" NA
May 23 32° 66° 22° (1986) 85° (1988) 0.06" NA
May 24 33° 66° 25° (1996) 85° (2001) 0.06" NA
May 25 33° 66° 24° (1991) 90° (2001) 0.06" NA
May 26 33° 67° 23° (1995) 85° (2003) 0.06" NA
May 27 33° 67° 25° (1995) 89° (1986) 0.06" NA
May 28 33° 67° 26° (1977) 91° (1986) 0.06" NA
May 29 34° 67° 27° (2001) 92° (1986) 0.06" NA
May 30 34° 68° 20° (1977) 91° (1986) 0.06" NA
May 31 34° 68° 26° (1999) 93° (1986) 0.06" NA
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