Roy, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 32° -41° (1997) 69° (1992) 0.5" 9"
February 13° 38° -39° (1996) 72° (1992) 0.31" 6.1"
March 22° 46° -33° (1989) 81° (2004) 0.81" 8"
April 31° 58° -5° (1986) 90° (1980) 1.14" 6.6"
May 40° 67° 10° (1954) 96° (1980) 2.73" 1.2"
June 48° 77° 29° (1969) 103° (1984) 2.3" 0.1"
July 53° 85° 36° (1972) 105° (2003) 1.97" 0"
August 52° 85° 30° (1992) 107° (1983) 1.53" 0"
September 42° 73° 16° (1985) 103° (1983) 1.22" 0.2"
October 32° 61° -11° (1991) 92° (1992) 0.73" 2.3"
November 20° 44° -29° (1959) 78° (1999) 0.44" 5.3"
December 10° 34° -41° (1989) 69° (1956) 0.5" 8.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 32° -24° (1952) 62° (1964) 0.02" NA
Jan 2 31° -26° (1950) 58° (1992) 0.02" NA
Jan 3 31° -35° (1950) 58° (1992) 0.02" NA
Jan 4 31° -31° (1950) 58° (1984) 0.02" NA
Jan 5 31° -23° (2004) 59° (2001) 0.02" NA
Jan 6 31° -29° (1982) 57° (2003) 0.02" NA
Jan 7 31° -22° (1968) 65° (2003) 0.02" NA
Jan 8 31° -30° (1970) 68° (1958) 0.02" NA
Jan 9 31° -25° (1949) 69° (1953) 0.02" NA
Jan 10 31° -28° (1949) 60° (1992) 0.02" NA
Jan 11 31° -41° (1997) 68° (1953) 0.02" NA
Jan 12 31° -37° (1997) 66° (1987) 0.02" NA
Jan 13 31° -32° (1997) 59° (1996) 0.02" NA
Jan 14 31° -32° (1972) 59° (1973) 0.02" NA
Jan 15 31° -37° (1950) 65° (1973) 0.02" NA
Jan 16 31° -28° (1982) 67° (1974) 0.02" NA
Jan 17 31° -33° (1950) 58° (1974) 0.02" NA
Jan 18 31° -32° (1950) 57° (1991) 0.02" NA
Jan 19 32° -29° (1963) 63° (2005) 0.02" NA
Jan 20 32° -40° (1954) 63° (1992) 0.01" NA
Jan 21 32° -35° (1949) 60° (1981) 0.01" NA
Jan 22 32° -23° (1982) 65° (1981) 0.01" NA
Jan 23 32° -34° (1969) 68° (2005) 0.01" NA
Jan 24 32° -41° (1969) 68° (2005) 0.01" NA
Jan 25 32° -40° (1957) 60° (1953) 0.01" NA
Jan 26 33° -32° (1950) 53° (1998) 0.01" NA
Jan 27 33° -33° (1972) 60° (1986) 0.01" NA
Jan 28 33° -34° (1969) 61° (1992) 0.01" NA
Jan 29 33° -31° (1950) 55° (1992) 0.01" NA
Jan 30 34° -34° (1996) 63° (1992) 0.01" NA
Jan 31 34° -28° (1969) 69° (1992) 0.01" NA
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