Helena, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 30° -42° (1957) 63° (1902) 0.52" 8.2"
February 16° 37° -42° (1996) 69° (1995) 0.38" 5.7"
March 24° 47° -30° (1955) 78° (2004) 0.63" 6.8"
April 31° 57° -10° (1936) 86° (1992) 0.91" 4.6"
May 40° 66° 17° (1954) 95° (1919) 1.78" 0.9"
June 48° 75° 30° (1999) 102° (1900) 1.82" 0"
July 52° 83° 36° (1971) 105° (2002) 1.34" 0"
August 51° 83° 28° (1992) 105° (1969) 1.29" 0.3"
September 41° 71° 6° (1926) 99° (1967) 1.05" 1.2"
October 31° 58° -8° (1991) 87° (2001) 0.66" 2.8"
November 20° 42° -39° (1959) 75° (1999) 0.48" 5.4"
December 11° 31° -40° (1880) 64° (1980) 0.46" 7.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 36° 65° 15° (1950) 87° (2001) 0.03" NA
Oct 2 36° 65° 19° (1950) 85° (1992) 0.03" NA
Oct 3 35° 64° 18° (1999) 85° (1963) 0.03" NA
Oct 4 35° 64° 21° (1898) 82° (1970) 0.03" NA
Oct 5 35° 64° 23° (2001) 81° (1958) 0.02" NA
Oct 6 35° 63° 19° (1974) 84° (1960) 0.02" NA
Oct 7 34° 63° 16° (1894) 80° (1889) 0.02" NA
Oct 8 34° 63° 17° (1985) 82° (1910) 0.02" NA
Oct 9 34° 62° 6° (1985) 84° (1942) 0.02" NA
Oct 10 33° 62° 15° (1987) 83° (1996) 0.02" NA
Oct 11 33° 61° 17° (1881) 83° (1995) 0.02" NA
Oct 12 33° 61° 14° (1881) 81° (1958) 0.02" NA
Oct 13 32° 60° 10° (1881) 79° (1918) 0.02" NA
Oct 14 32° 60° 12° (1899) 81° (1958) 0.02" NA
Oct 15 32° 59° 16° (1969) 83° (1991) 0.02" NA
Oct 16 31° 59° 12° (1946) 80° (1991) 0.02" NA
Oct 17 31° 58° 11° (1930) 80° (2003) 0.02" NA
Oct 18 31° 58° 7° (1905) 82° (2003) 0.02" NA
Oct 19 30° 57° 11° (1905) 80° (2003) 0.02" NA
Oct 20 30° 57° 18° (1995) 80° (1921) 0.02" NA
Oct 21 30° 56° 15° (1984) 82° (2003) 0.02" NA
Oct 22 29° 56° 10° (1957) 78° (1915) 0.02" NA
Oct 23 29° 55° 6° (1919) 74° (2007) 0.02" NA
Oct 24 28° 54° -1° (1919) 72° (1968) 0.02" NA
Oct 25 28° 54° 0° (1919) 79° (1990) 0.02" NA
Oct 26 28° 53° 6° (1919) 76° (1922) 0.02" NA
Oct 27 27° 53° 3° (1919) 76° (2001) 0.02" NA
Oct 28 27° 52° 3° (1991) 76° (1937) 0.02" NA
Oct 29 27° 51° -2° (1991) 73° (1968) 0.02" NA
Oct 30 26° 51° -8° (1991) 72° (1990) 0.02" NA
Oct 31 26° 50° -5° (1935) 68° (1967) 0.02" NA
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