Fallon, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -45° (1954) 65° (2002) 0.31" NA
February 10° 36° -41° (1982) 73° (1992) 0.24" NA
March 20° 47° -35° (1962) 79° (2007) 0.43" NA
April 31° 60° -5° (1986) 93° (1952) 1.06" NA
May 42° 71° 14° (1954) 102° (1988) 1.92" NA
June 52° 81° 30° (1979) 110° (1988) 2.15" NA
July 57° 89° 38° (1987) 111° (2002) 1.55" NA
August 55° 88° 28° (1988) 111° (1995) 1.29" NA
September 43° 76° 15° (1989) 106° (1983) 1.28" NA
October 31° 62° -9° (1991) 94° (1989) 0.94" NA
November 18° 43° -31° (1985) 79° (1987) 0.44" NA
December 32° -43° (1983) 69° (1979) 0.24" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 37° 66° 19° (1989) 90° (1987) 0.05" NA
May 2 37° 66° 20° (1979) 89° (1955) 0.05" NA
May 3 37° 67° 14° (1954) 89° (1985) 0.05" NA
May 4 38° 67° 18° (2002) 90° (1986) 0.05" NA
May 5 38° 67° 22° (1954) 89° (1986) 0.05" NA
May 6 39° 68° 22° (1985) 86° (1966) 0.05" NA
May 7 39° 68° 21° (1959) 92° (1992) 0.06" NA
May 8 39° 68° 22° (1984) 92° (1992) 0.06" NA
May 9 40° 69° 23° (1968) 91° (1987) 0.06" NA
May 10 40° 69° 20° (1979) 93° (1977) 0.06" NA
May 11 40° 69° 18° (1968) 92° (1977) 0.06" NA
May 12 41° 70° 25° (1953) 93° (1958) 0.06" NA
May 13 41° 70° 17° (2004) 99° (2001) 0.06" NA
May 14 41° 70° 20° (2004) 98° (2001) 0.06" NA
May 15 42° 71° 30° (1958) 90° (1987) 0.06" NA
May 16 42° 71° 30° (1976) 92° (1984) 0.06" NA
May 17 43° 72° 25° (2002) 93° (1988) 0.06" NA
May 18 43° 72° 31° (1979) 95° (1972) 0.06" NA
May 19 43° 72° 29° (2000) 94° (2006) 0.06" NA
May 20 44° 73° 25° (1968) 92° (1964) 0.07" NA
May 21 44° 73° 30° (1989) 97° (1964) 0.07" NA
May 22 44° 73° 30° (1969) 98° (1980) 0.07" NA
May 23 45° 74° 26° (1959) 101° (1980) 0.07" NA
May 24 45° 74° 30° (2002) 93° (1951) 0.07" NA
May 25 45° 74° 29° (1995) 93° (1977) 0.07" NA
May 26 46° 74° 27° (1984) 90° (1958) 0.07" NA
May 27 46° 75° 30° (1984) 97° (1969) 0.07" NA
May 28 47° 75° 28° (1952) 97° (1969) 0.07" NA
May 29 47° 75° 34° (1989) 95° (1958) 0.07" NA
May 30 47° 76° 31° (1982) 102° (1988) 0.07" NA
May 31 48° 76° 34° (1985) 98° (1984) 0.07" NA
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