Chester, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 30° -57° (1950) 66° (1992) 0.37" NA
February 35° -44° (1994) 74° (1992) 0.33" NA
March 18° 45° -38° (1951) 79° (2004) 0.54" NA
April 28° 57° -19° (1975) 88° (1980) 0.82" NA
May 39° 67° 14° (1954) 94° (2001) 1.73" NA
June 47° 75° 24° (1969) 100° (2002) 2.3" NA
July 52° 83° 31° (1958) 104° (2007) 1.49" NA
August 50° 82° 28° (1992) 105° (1961) 1.11" NA
September 40° 71° 13° (1972) 97° (1963) 0.97" NA
October 28° 58° -17° (1991) 89° (1992) 0.55" NA
November 15° 41° -31° (1959) 75° (1999) 0.38" NA
December 31° -52° (1983) 64° (1987) 0.48" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 34° -33° (1985) 60° (1969) 0.01" NA
Dec 2 34° -35° (1985) 55° (1979) 0.02" NA
Dec 3 33° -28° (1970) 64° (1987) 0.01" NA
Dec 4 33° -37° (1972) 59° (1987) 0.01" NA
Dec 5 33° -30° (1950) 54° (1963) 0.02" NA
Dec 6 33° -38° (1972) 60° (1987) 0.01" NA
Dec 7 32° -32° (1956) 59° (1987) 0.01" NA
Dec 8 32° -44° (1972) 59° (1990) 0.02" NA
Dec 9 32° -38° (1977) 59° (1979) 0.01" NA
Dec 10 32° -32° (1961) 56° (1993) 0.01" NA
Dec 11 31° -33° (1961) 55° (2004) 0.02" NA
Dec 12 31° -32° (1961) 56° (1998) 0.01" NA
Dec 13 31° -30° (1963) 58° (1998) 0.01" NA
Dec 14 31° -28° (1948) 57° (2002) 0.01" NA
Dec 15 31° -32° (2009) 61° (1962) 0.02" NA
Dec 16 30° -35° (1979) 63° (1980) 0.01" NA
Dec 17 30° -42° (1964) 59° (1980) 0.02" NA
Dec 18 30° -38° (1955) 54° (1954) 0.02" NA
Dec 19 30° -29° (1983) 58° (2004) 0.01" NA
Dec 20 30° -32° (1949) 56° (1954) 0.02" NA
Dec 21 30° -42° (1989) 58° (1954) 0.02" NA
Dec 22 30° -44° (1990) 54° (1954) 0.02" NA
Dec 23 30° -27° (1983) 52° (1999) 0.02" NA
Dec 24 29° -52° (1983) 52° (2003) 0.02" NA
Dec 25 29° -42° (1983) 53° (1956) 0.01" NA
Dec 26 29° -30° (1996) 55° (1980) 0.02" NA
Dec 27 29° -17° (1965) 56° (1980) 0.02" NA
Dec 28 29° -32° (1968) 61° (1956) 0.02" NA
Dec 29 29° -45° (1968) 63° (1956) 0.02" NA
Dec 30 29° -35° (1968) 52° (1956) 0.01" NA
Dec 31 29° -36° (1992) 52° (1963) 0.02" NA
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