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
Jun 1 44° 73° 30° (1950) 92° (1934) 0.09" NA
Jun 2 44° 73° 30° (1964) 88° (1956) 0.09" NA
Jun 3 45° 73° 29° (1950) 93° (2006) 0.09" NA
Jun 4 45° 74° 30° (1951) 91° (1988) 0.09" NA
Jun 5 45° 74° 29° (1998) 99° (1988) 0.09" NA
Jun 6 46° 75° 28° (1998) 101° (1988) 0.09" NA
Jun 7 46° 75° 33° (1998) 97° (1988) 0.09" NA
Jun 8 46° 75° 31° (1979) 99° (1988) 0.09" NA
Jun 9 47° 76° 32° (1979) 96° (1988) 0.09" NA
Jun 10 47° 76° 34° (1928) 95° (1961) 0.09" NA
Jun 11 47° 76° 32° (1938) 100° (1921) 0.09" NA
Jun 12 48° 77° 32° (1966) 95° (1936) 0.09" NA
Jun 13 48° 77° 29° (1969) 98° (1940) 0.09" NA
Jun 14 48° 77° 29° (1969) 97° (1959) 0.09" NA
Jun 15 48° 78° 30° (1969) 100° (1931) 0.09" NA
Jun 16 49° 78° 33° (1966) 101° (1931) 0.09" NA
Jun 17 49° 78° 30° (1956) 98° (1933) 0.08" NA
Jun 18 49° 79° 34° (1985) 99° (1988) 0.08" NA
Jun 19 49° 79° 35° (1979) 95° (1940) 0.08" NA
Jun 20 50° 79° 35° (1929) 100° (1989) 0.08" NA
Jun 21 50° 80° 33° (1926) 102° (1988) 0.08" NA
Jun 22 50° 80° 37° (1960) 98° (1922) 0.08" NA
Jun 23 50° 81° 37° (1987) 101° (1936) 0.08" NA
Jun 24 50° 81° 34° (1967) 103° (1936) 0.08" NA
Jun 25 51° 81° 34° (1935) 101° (1931) 0.07" NA
Jun 26 51° 82° 36° (2000) 102° (1931) 0.07" NA
Jun 27 51° 82° 37° (1985) 106° (1936) 0.07" NA
Jun 28 51° 82° 32° (1977) 104° (1931) 0.07" NA
Jun 29 51° 83° 35° (1969) 104° (2002) 0.07" NA
Jun 30 51° 83° 34° (1963) 105° (2002) 0.06" NA
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