Westby, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -4° 17° -45° (1969) 55° (2002) 0.39" NA
February 25° -42° (1962) 66° (1992) 0.26" NA
March 15° 37° -31° (2002) 77° (1978) 0.56" NA
April 28° 53° -18° (1975) 91° (1980) 0.9" NA
May 41° 66° 13° (2005) 102° (1980) 1.76" NA
June 51° 74° 28° (1951) 103° (1988) 3" NA
July 55° 79° 36° (1987) 107° (1975) 2.48" NA
August 52° 79° 29° (1958) 108° (1983) 1.55" NA
September 40° 67° 15° (1961) 103° (1983) 1.41" NA
October 29° 55° -5° (1991) 92° (1992) 0.71" NA
November 14° 34° -26° (1996) 73° (1999) 0.4" NA
December 22° -42° (1983) 55° (1979) 0.41" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 22° 45° -12° (1975) 76° (2004) 0.02" NA
Apr 2 22° 46° -18° (1975) 71° (1988) 0.02" NA
Apr 3 23° 46° -8° (2002) 74° (1991) 0.02" NA
Apr 4 23° 47° -3° (2002) 69° (1992) 0.02" NA
Apr 5 24° 48° -6° (1979) 71° (2000) 0.02" NA
Apr 6 24° 48° 6° (1982) 76° (1991) 0.03" NA
Apr 7 24° 49° 7° (2007) 75° (1971) 0.03" NA
Apr 8 25° 49° 4° (1997) 82° (1977) 0.03" NA
Apr 9 25° 50° 5° (1997) 84° (2005) 0.03" NA
Apr 10 26° 51° 6° (1982) 78° (2003) 0.03" NA
Apr 11 26° 51° 12° (1997) 82° (1949) 0.03" NA
Apr 12 27° 52° 6° (1962) 78° (1988) 0.03" NA
Apr 13 27° 52° 10° (1953) 78° (2003) 0.03" NA
Apr 14 28° 53° 16° (1983) 80° (1963) 0.03" NA
Apr 15 28° 53° 9° (1961) 78° (1981) 0.03" NA
Apr 16 29° 54° 5° (1953) 80° (2006) 0.03" NA
Apr 17 29° 54° 13° (1953) 79° (2006) 0.03" NA
Apr 18 29° 55° 8° (1953) 83° (2005) 0.03" NA
Apr 19 30° 55° 14° (1953) 84° (1952) 0.03" NA
Apr 20 30° 56° 13° (1966) 91° (1980) 0.03" NA
Apr 21 31° 56° 11° (1951) 90° (1980) 0.03" NA
Apr 22 31° 57° 10° (1967) 86° (1989) 0.03" NA
Apr 23 32° 57° 12° (1967) 85° (1990) 0.03" NA
Apr 24 32° 58° 17° (1967) 86° (1962) 0.03" NA
Apr 25 33° 58° 13° (2002) 83° (1952) 0.03" NA
Apr 26 33° 58° 17° (2002) 90° (1952) 0.04" NA
Apr 27 33° 59° 17° (1961) 80° (1952) 0.04" NA
Apr 28 34° 59° 11° (1958) 90° (1952) 0.04" NA
Apr 29 34° 60° 12° (1966) 90° (1949) 0.04" NA
Apr 30 35° 60° 12° (1954) 86° (1968) 0.04" NA
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