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
Dec 1 13° 39° -19° (1985) 64° (1999) 0.02" NA
Dec 2 12° 39° -29° (1985) 70° (1995) 0.02" NA
Dec 3 12° 39° -20° (1985) 72° (1941) 0.02" NA
Dec 4 12° 38° -14° (1992) 66° (1939) 0.02" NA
Dec 5 12° 38° -35° (1972) 78° (1939) 0.02" NA
Dec 6 11° 38° -37° (1972) 73° (1939) 0.02" NA
Dec 7 11° 38° -34° (1972) 62° (1981) 0.02" NA
Dec 8 11° 37° -39° (1972) 62° (1930) 0.02" NA
Dec 9 10° 37° -37° (1972) 65° (1939) 0.02" NA
Dec 10 10° 37° -33° (1972) 73° (1946) 0.01" NA
Dec 11 10° 37° -28° (1932) 68° (1981) 0.01" NA
Dec 12 10° 37° -27° (1932) 66° (2004) 0.01" NA
Dec 13 36° -22° (1922) 64° (1924) 0.01" NA
Dec 14 36° -20° (1926) 65° (1924) 0.01" NA
Dec 15 36° -20° (1926) 67° (1946) 0.01" NA
Dec 16 36° -25° (1964) 64° (2006) 0.01" NA
Dec 17 36° -31° (1964) 63° (1939) 0.01" NA
Dec 18 35° -34° (1983) 64° (1980) 0.01" NA
Dec 19 35° -29° (1924) 59° (1988) 0.01" NA
Dec 20 35° -26° (1990) 62° (2004) 0.01" NA
Dec 21 35° -39° (1990) 59° (1957) 0.01" NA
Dec 22 35° -44° (1989) 61° (1957) 0.02" NA
Dec 23 35° -30° (1983) 63° (1955) 0.02" NA
Dec 24 34° -42° (1983) 57° (1922) 0.02" NA
Dec 25 34° -36° (1983) 58° (1999) 0.02" NA
Dec 26 34° -32° (1983) 58° (1950) 0.02" NA
Dec 27 34° -21° (1996) 61° (1928) 0.02" NA
Dec 28 34° -21° (1983) 59° (1956) 0.02" NA
Dec 29 34° -30° (1990) 60° (1965) 0.02" NA
Dec 30 34° -35° (1978) 64° (1956) 0.02" NA
Dec 31 34° -36° (1978) 54° (1956) 0.02" NA
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