Big Arm, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° 34° -23° (1957) 57° (1971) 0.9" 7.6"
February 23° 39° -20° (1989) 67° (1995) 0.75" 3.6"
March 28° 49° -9° (1989) 77° (2004) 0.94" 4.3"
April 35° 58° 15° (2002) 82° (1980) 1.33" 0.5"
May 42° 67° 23° (1954) 90° (2002) 2.2" 0"
June 48° 73° 31° (1952) 95° (1992) 2.4" 0"
July 53° 84° 34° (1971) 104° (1960) 1.2" 0"
August 53° 84° 35° (1965) 100° (2003) 1.12" 0"
September 45° 72° 22° (1985) 98° (1967) 1.32" 0"
October 35° 57° 4° (2002) 82° (1980) 1.18" 0.2"
November 28° 42° -18° (1959) 71° (1999) 1.17" 4.9"
December 22° 33° -28° (1968) 60° (1965) 1.05" 10.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 40° 65° 25° (1954) 81° (1976) 0.04" 0"
Oct 2 39° 65° 27° (2002) 78° (1952) 0.04" 0"
Oct 3 39° 64° 26° (1999) 79° (1958) 0.04" 0"
Oct 4 39° 64° 27° (1964) 80° (1970) 0.04" 0"
Oct 5 38° 63° 26° (1981) 79° (1958) 0.04" 0.1"
Oct 6 38° 63° 22° (1974) 80° (2003) 0.03" 0"
Oct 7 38° 62° 24° (2000) 82° (1980) 0.04" 0"
Oct 8 38° 62° 22° (1985) 80° (1980) 0.04" 0"
Oct 9 37° 61° 17° (1985) 78° (1952) 0.03" 0"
Oct 10 37° 60° 12° (2009) 75° (1989) 0.04" 0"
Oct 11 37° 60° 11° (2009) 74° (1952) 0.04" 0"
Oct 12 36° 59° 13° (2009) 73° (1952) 0.04" 0"
Oct 13 36° 59° 21° (1969) 76° (1976) 0.04" 0"
Oct 14 36° 58° 24° (1952) 76° (1988) 0.04" 0"
Oct 15 36° 58° 22° (1969) 79° (1991) 0.04" 0"
Oct 16 35° 57° 21° (1999) 80° (1991) 0.03" 0"
Oct 17 35° 57° 22° (1969) 74° (1974) 0.04" 0"
Oct 18 35° 56° 20° (1969) 74° (1974) 0.03" 0"
Oct 19 35° 56° 20° (1976) 73° (1973) 0.04" 0"
Oct 20 34° 55° 21° (1984) 73° (1973) 0.04" 0"
Oct 21 34° 55° 19° (1984) 80° (2003) 0.03" 0"
Oct 22 34° 54° 21° (1981) 80° (2003) 0.04" 0"
Oct 23 34° 54° 21° (1957) 69° (2007) 0.04" 0"
Oct 24 33° 53° 16° (2002) 70° (2007) 0.04" 0.1"
Oct 25 33° 52° 17° (2002) 74° (1955) 0.04" 0"
Oct 26 33° 52° 18° (2002) 71° (1955) 0.04" 0"
Oct 27 33° 51° 18° (1971) 68° (1983) 0.03" 0"
Oct 28 32° 51° 9° (1971) 67° (1983) 0.04" 0"
Oct 29 32° 50° 6° (1971) 64° (2006) 0.04" 0"
Oct 30 32° 50° 5° (2002) 65° (1965) 0.04" 0"
Oct 31 32° 49° 4° (2002) 67° (1967) 0.04" 0"
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