East Helena, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 33° -42° (1957) 63° (1902) 0.36" 6.2"
February 17° 39° -42° (1996) 69° (1995) 0.31" 5"
March 24° 48° -30° (1955) 78° (2004) 0.59" 6.2"
April 32° 58° -10° (1936) 86° (1992) 0.98" 3.7"
May 41° 67° 17° (1954) 95° (1919) 1.87" 0.9"
June 49° 76° 30° (1999) 102° (1900) 2.06" 0"
July 54° 86° 36° (1971) 105° (2002) 1.19" 0"
August 52° 85° 28° (1992) 105° (1969) 1.2" 0.3"
September 43° 73° 6° (1926) 99° (1967) 1.1" 1.3"
October 33° 59° -8° (1991) 87° (2001) 0.68" 2.5"
November 22° 43° -39° (1959) 75° (1999) 0.49" 4.7"
December 12° 32° -40° (1880) 64° (1980) 0.4" 7.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 36° 63° 20° (1954) 82° (2000) 0.04" 0.1"
May 2 37° 63° 17° (1954) 86° (1947) 0.04" 0"
May 3 37° 63° 23° (1967) 84° (1966) 0.04" 0.1"
May 4 37° 64° 22° (1996) 87° (1966) 0.04" 0"
May 5 37° 64° 20° (1996) 86° (1966) 0.04" 0.1"
May 6 38° 64° 23° (1996) 90° (1966) 0.04" 0"
May 7 38° 65° 22° (1885) 86° (1992) 0.05" 0.1"
May 8 38° 65° 23° (1997) 85° (1987) 0.05" 0"
May 9 39° 65° 24° (2002) 84° (1994) 0.05" 0"
May 10 39° 66° 23° (1946) 88° (1940) 0.06" 0.1"
May 11 39° 66° 25° (1968) 87° (1993) 0.05" 0"
May 12 40° 66° 22° (1943) 92° (2001) 0.05" 0.1"
May 13 40° 66° 23° (1983) 89° (2001) 0.06" 0"
May 14 40° 67° 25° (1995) 88° (1936) 0.06" 0"
May 15 41° 67° 26° (1943) 88° (1944) 0.06" 0"
May 16 41° 67° 28° (1986) 91° (2006) 0.06" 0.1"
May 17 41° 68° 26° (1943) 90° (2006) 0.07" 0"
May 18 42° 68° 26° (1903) 91° (2006) 0.06" 0"
May 19 42° 68° 24° (1997) 90° (1954) 0.06" 0"
May 20 42° 68° 28° (1959) 90° (2002) 0.07" 0"
May 21 42° 69° 27° (1953) 89° (1980) 0.07" 0.1"
May 22 43° 69° 31° (1947) 86° (2001) 0.07" 0"
May 23 43° 69° 26° (1944) 89° (2001) 0.07" 0"
May 24 43° 69° 29° (1989) 93° (2001) 0.07" 0"
May 25 44° 70° 25° (1950) 89° (2003) 0.07" 0"
May 26 44° 70° 29° (1975) 88° (1966) 0.08" 0"
May 27 44° 70° 27° (1995) 90° (1986) 0.07" 0.1"
May 28 44° 70° 28° (1947) 95° (1919) 0.08" 0"
May 29 45° 71° 27° (1951) 91° (2003) 0.08" 0"
May 30 45° 71° 10° (1929) 92° (1986) 0.08" 0"
May 31 45° 71° 27° (1917) 88° (1956) 0.08" 0"
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