Roy, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 35° -41° (1997) 69° (1992) 0.36" 7.1"
February 14° 38° -39° (1996) 72° (1992) 0.31" 5"
March 22° 48° -33° (1989) 81° (2004) 0.68" 6.9"
April 31° 58° -5° (1986) 90° (1980) 1.11" 3"
May 40° 67° 10° (1954) 96° (1980) 2.77" 1.1"
June 49° 76° 29° (1969) 103° (1984) 2.35" 0.1"
July 54° 86° 36° (1972) 105° (2003) 1.76" 0"
August 52° 86° 30° (1992) 107° (1983) 1.26" 0"
September 43° 74° 16° (1985) 103° (1983) 1.15" 0.3"
October 32° 60° -11° (1991) 92° (1992) 0.85" 2.1"
November 20° 46° -29° (1959) 78° (1999) 0.41" 4.7"
December 10° 35° -41° (1989) 69° (1956) 0.49" 6.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 11° 36° -27° (1985) 66° (1992) 0.01" 0.2"
Feb 2 12° 36° -39° (1996) 67° (1962) 0.01" 0.2"
Feb 3 12° 36° -36° (1996) 69° (1962) 0.01" 0.2"
Feb 4 12° 36° -30° (1985) 63° (1991) 0.01" 0.1"
Feb 5 12° 36° -26° (1982) 61° (1984) 0.01" 0.2"
Feb 6 12° 36° -19° (1949) 64° (1987) 0.01" 0.2"
Feb 7 12° 37° -24° (1971) 68° (1954) 0.01" 0.2"
Feb 8 12° 37° -36° (1994) 67° (1954) 0.01" 0.1"
Feb 9 12° 37° -32° (1994) 60° (1970) 0.01" 0.2"
Feb 10 12° 37° -24° (1981) 64° (1951) 0.01" 0.2"
Feb 11 13° 37° -15° (1982) 67° (2005) 0.01" 0.1"
Feb 12 13° 37° -20° (1958) 63° (1983) 0.01" 0.2"
Feb 13 13° 38° -26° (1949) 63° (1996) 0.01" 0.1"
Feb 14 13° 38° -21° (1990) 59° (1981) 0" 0.2"
Feb 15 13° 38° -24° (1979) 54° (1992) 0.02" 0.2"
Feb 16 13° 38° -26° (1956) 62° (1981) 0.01" 0.2"
Feb 17 14° 38° -21° (1993) 60° (1997) 0.01" 0.1"
Feb 18 14° 39° -22° (1959) 59° (1981) 0.01" 0.2"
Feb 19 14° 39° -20° (1959) 67° (1981) 0.01" 0.2"
Feb 20 14° 39° -24° (1959) 69° (1995) 0.01" 0.2"
Feb 21 14° 39° -13° (1957) 66° (1995) 0.01" 0.2"
Feb 22 15° 40° -16° (1957) 64° (2002) 0.01" 0.2"
Feb 23 15° 40° -21° (1965) 65° (1954) 0.02" 0.2"
Feb 24 15° 40° -28° (1960) 71° (1995) 0.01" 0.2"
Feb 25 16° 41° -17° (1994) 70° (1995) 0.01" 0.1"
Feb 26 16° 41° -16° (1993) 66° (1950) 0.01" 0.2"
Feb 27 16° 41° -26° (1960) 72° (1992) 0.02" 0.2"
Feb 28 16° 42° -24° (1962) 71° (1992) 0.01" 0.2"
Feb 29 17° 42° -12° (1996) 71° (1992) 0.01" NA
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