Decker, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 33° -40° (1997) 70° (2005) 0.51" NA
February 12° 39° -38° (1936) 80° (1940) 0.38" NA
March 21° 48° -24° (1978) 80° (1978) 0.86" NA
April 30° 58° -14° (1936) 88° (1989) 1.56" NA
May 39° 67° 7° (1999) 96° (1980) 2.68" NA
June 48° 78° 28° (1998) 106° (1936) 2.49" NA
July 53° 87° 11° (1955) 109° (2002) 1.25" NA
August 51° 87° 29° (1920) 105° (2001) 0.84" NA
September 41° 75° 4° (1984) 104° (1954) 1.38" NA
October 30° 62° -18° (1991) 92° (1992) 1.3" NA
November 18° 45° -26° (1985) 80° (1999) 0.67" NA
December 36° -44° (1989) 78° (1939) 0.5" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 54° 89° 38° (1968) 101° (1940) 0.03" NA
Aug 2 54° 89° 40° (2006) 100° (1964) 0.03" NA
Aug 3 54° 89° 32° (1980) 102° (2001) 0.03" NA
Aug 4 54° 89° 32° (1980) 105° (2001) 0.02" NA
Aug 5 54° 89° 39° (1974) 103° (1961) 0.02" NA
Aug 6 53° 89° 39° (1974) 105° (1961) 0.02" NA
Aug 7 53° 89° 38° (1946) 105° (1949) 0.02" NA
Aug 8 53° 89° 38° (1946) 105° (1995) 0.02" NA
Aug 9 53° 89° 34° (1985) 103° (1936) 0.02" NA
Aug 10 53° 89° 41° (1939) 105° (1935) 0.02" NA
Aug 11 53° 89° 33° (2004) 102° (1928) 0.02" NA
Aug 12 53° 89° 38° (2004) 104° (2003) 0.02" NA
Aug 13 52° 88° 39° (1992) 103° (1937) 0.02" NA
Aug 14 52° 88° 40° (1995) 104° (1935) 0.02" NA
Aug 15 52° 88° 35° (1974) 102° (1971) 0.03" NA
Aug 16 52° 88° 38° (1925) 101° (1971) 0.03" NA
Aug 17 52° 88° 34° (2002) 102° (1920) 0.03" NA
Aug 18 51° 87° 36° (1985) 100° (1958) 0.03" NA
Aug 19 51° 87° 39° (1950) 100° (1932) 0.03" NA
Aug 20 51° 87° 32° (1950) 99° (1999) 0.03" NA
Aug 21 50° 87° 36° (1974) 100° (1988) 0.03" NA
Aug 22 50° 86° 36° (1974) 100° (1995) 0.03" NA
Aug 23 50° 86° 35° (1966) 103° (1971) 0.03" NA
Aug 24 50° 85° 36° (1966) 100° (1969) 0.03" NA
Aug 25 49° 85° 35° (1964) 102° (1926) 0.03" NA
Aug 26 49° 85° 34° (1992) 104° (1991) 0.03" NA
Aug 27 48° 84° 34° (1987) 102° (1937) 0.03" NA
Aug 28 48° 84° 36° (1988) 101° (1924) 0.03" NA
Aug 29 48° 83° 32° (1920) 99° (1971) 0.03" NA
Aug 30 47° 83° 29° (1920) 100° (1995) 0.04" NA
Aug 31 47° 83° 31° (1993) 102° (1948) 0.04" NA
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