Westby, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -3° 19° -45° (1969) 55° (2002) 0.37" NA
February 25° -42° (1962) 66° (1992) 0.28" NA
March 15° 37° -31° (2002) 77° (1978) 0.59" NA
April 28° 55° -18° (1975) 91° (1980) 0.84" NA
May 40° 66° 13° (2005) 102° (1980) 2.04" NA
June 49° 74° 28° (1951) 103° (1988) 2.83" NA
July 54° 80° 36° (1987) 107° (1975) 2.56" NA
August 52° 81° 29° (1958) 108° (1983) 1.58" NA
September 40° 69° 15° (1961) 103° (1983) 1.14" NA
October 28° 54° -5° (1991) 92° (1992) 0.88" NA
November 15° 35° -26° (1996) 73° (1999) 0.5" NA
December 22° -42° (1983) 55° (1979) 0.39" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 -3° 19° -32° (1982) 45° (1964) 0.02" NA
Jan 2 -3° 19° -31° (1966) 47° (1997) 0.02" NA
Jan 3 -3° 19° -33° (1950) 43° (1962) 0.01" NA
Jan 4 -3° 19° -40° (1950) 44° (1984) 0.02" NA
Jan 5 -3° 19° -40° (2005) 43° (1984) 0.02" NA
Jan 6 -3° 19° -37° (2005) 44° (1990) 0.02" NA
Jan 7 -3° 18° -34° (1976) 46° (1963) 0.01" NA
Jan 8 -3° 18° -29° (1977) 47° (2002) 0.02" NA
Jan 9 -3° 18° -35° (1993) 55° (2002) 0.02" NA
Jan 10 -3° 19° -37° (1982) 46° (1990) 0.01" NA
Jan 11 -3° 19° -35° (1974) 46° (1990) 0.02" NA
Jan 12 -3° 19° -33° (1974) 44° (1992) 0.01" NA
Jan 13 -3° 19° -39° (1965) 45° (1996) 0.01" NA
Jan 14 -3° 19° -35° (2005) 43° (1996) 0.02" NA
Jan 15 -3° 19° -42° (2009) 49° (2006) 0.01" NA
Jan 16 -3° 19° -37° (2009) 46° (1961) 0.01" NA
Jan 17 -3° 19° -35° (1954) 45° (1974) 0.02" NA
Jan 18 -3° 19° -40° (1950) 40° (1981) 0.01" NA
Jan 19 -3° 19° -32° (1996) 45° (1974) 0.02" NA
Jan 20 -3° 19° -45° (1954) 42° (1964) 0.01" NA
Jan 21 -3° 19° -39° (1954) 43° (1968) 0.01" NA
Jan 22 -2° 20° -35° (1966) 46° (1981) 0" NA
Jan 23 -2° 20° -35° (1966) 52° (1981) 0.01" NA
Jan 24 -2° 20° -34° (1957) 50° (1973) 0.01" NA
Jan 25 -2° 20° -45° (1969) 45° (1968) 0" NA
Jan 26 -2° 20° -42° (1950) 45° (1982) 0.01" NA
Jan 27 -2° 20° -32° (1997) 45° (2006) 0" NA
Jan 28 -2° 21° -34° (1969) 44° (1988) 0.01" NA
Jan 29 -1° 21° -39° (1951) 46° (1992) 0" NA
Jan 30 -1° 21° -36° (1950) 46° (1992) 0.01" NA
Jan 31 -1° 21° -35° (1996) 45° (1954) 0" NA
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