Roy, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 33° -38° (1949) 59° (2003) 1.1" 5.8"
February 22° 39° -30° (1985) 65° (1986) 0.97" 4.2"
March 29° 50° -11° (1985) 78° (1986) 1.35" 3.1"
April 35° 60° 15° (1997) 87° (1992) 1.2" 0.7"
May 42° 69° 21° (1972) 92° (2003) 1.6" 0.4"
June 49° 78° 29° (1995) 103° (1988) 0.95" 0"
July 54° 86° 36° (1997) 102° (1975) 0.61" 0"
August 54° 86° 33° (1992) 103° (1994) 0.6" 0"
September 45° 75° 22° (1970) 95° (1990) 0.84" 0"
October 36° 62° 8° (2002) 87° (1987) 0.95" 0.9"
November 27° 44° -12° (1976) 72° (2006) 1.2" 2.1"
December 19° 34° -23° (1990) 62° (1995) 1.06" 7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 25° 44° -9° (1993) 62° (1992) 0.04" NA
Mar 2 25° 44° -11° (1960) 61° (1992) 0.04" NA
Mar 3 26° 45° -3° (1985) 66° (1994) 0.04" NA
Mar 4 26° 45° -11° (1985) 64° (1987) 0.04" NA
Mar 5 26° 46° -2° (1984) 64° (1986) 0.04" NA
Mar 6 26° 46° 5° (1955) 60° (1950) 0.04" NA
Mar 7 27° 46° -3° (1985) 60° (1954) 0.04" NA
Mar 8 27° 47° 6° (1969) 61° (1972) 0.04" NA
Mar 9 27° 47° 0° (1969) 68° (1972) 0.04" NA
Mar 10 27° 48° 4° (1969) 66° (1972) 0.04" NA
Mar 11 28° 48° -3° (1969) 65° (1989) 0.04" NA
Mar 12 28° 48° 0° (1969) 69° (2007) 0.05" NA
Mar 13 28° 49° -3° (1969) 70° (2003) 0.05" NA
Mar 14 28° 49° -1° (1969) 69° (1994) 0.05" NA
Mar 15 28° 49° 5° (1969) 72° (1994) 0.05" NA
Mar 16 29° 50° 7° (1985) 70° (2007) 0.05" NA
Mar 17 29° 50° 10° (2002) 73° (2007) 0.05" NA
Mar 18 29° 51° 2° (1971) 72° (2007) 0.05" NA
Mar 19 29° 51° 15° (1971) 70° (1997) 0.05" NA
Mar 20 30° 51° 4° (1955) 70° (1997) 0.05" NA
Mar 21 30° 52° 7° (1952) 70° (2004) 0.05" NA
Mar 22 30° 52° 2° (1952) 70° (2004) 0.05" NA
Mar 23 30° 52° 11° (1964) 71° (2004) 0.04" NA
Mar 24 30° 53° 12° (1996) 71° (1956) 0.04" NA
Mar 25 31° 53° 9° (1965) 71° (1999) 0.04" NA
Mar 26 31° 53° 11° (1996) 68° (1960) 0.04" NA
Mar 27 31° 54° 14° (1955) 73° (1986) 0.04" NA
Mar 28 31° 54° 10° (1975) 78° (1986) 0.04" NA
Mar 29 31° 54° 13° (1987) 72° (1978) 0.04" NA
Mar 30 32° 55° 13° (1980) 74° (1986) 0.04" NA
Mar 31 32° 55° 15° (1977) 72° (2003) 0.04" NA
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