Roundup, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 15° 40° -41° (1969) 70° (1953) 0.34" 4.7"
February 18° 44° -52° (1936) 75° (1932) 0.33" 2.9"
March 24° 53° -33° (1932) 82° (2004) 0.71" 4.2"
April 32° 62° -9° (1936) 91° (1980) 1.51" 0.6"
May 42° 72° 10° (1954) 100° (1934) 2.27" 0.1"
June 50° 80° 31° (1979) 106° (2002) 2.65" 0"
July 56° 90° 36° (1955) 111° (2002) 1.88" 0"
August 54° 89° 30° (1992) 108° (1961) 1.12" 0"
September 44° 77° 15° (1985) 102° (1983) 1.18" 0.1"
October 34° 63° -10° (1919) 95° (1943) 1.02" 0.6"
November 24° 48° -36° (1959) 78° (1933) 0.45" 2.7"
December 15° 39° -44° (1983) 70° (1980) 0.7" 5.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 29° 57° -1° (1935) 82° (1955) 0.04" 0"
Apr 2 29° 58° -9° (1936) 77° (1990) 0.04" 0.1"
Apr 3 29° 58° -2° (1920) 79° (1943) 0.04" 0"
Apr 4 29° 58° 2° (1936) 80° (2000) 0.04" 0"
Apr 5 30° 58° -2° (1936) 82° (1944) 0.05" 0.1"
Apr 6 30° 59° 9° (1935) 82° (1969) 0.04" 0"
Apr 7 30° 59° 15° (2007) 83° (1930) 0.05" 0"
Apr 8 30° 59° 7° (1982) 82° (1943) 0.04" 0"
Apr 9 31° 60° 9° (1973) 82° (1996) 0.05" 0.1"
Apr 10 31° 60° 16° (1922) 82° (1996) 0.05" 0"
Apr 11 31° 60° 0° (1940) 84° (2003) 0.05" 0"
Apr 12 31° 61° 1° (1997) 81° (1976) 0.05" 0"
Apr 13 32° 61° 9° (1933) 86° (1915) 0.05" 0.1"
Apr 14 32° 61° 5° (1986) 83° (2008) 0.05" 0"
Apr 15 32° 62° 10° (1973) 83° (1962) 0.05" 0"
Apr 16 32° 62° 15° (1951) 82° (1984) 0.05" 0"
Apr 17 32° 62° 17° (1964) 86° (1984) 0.05" 0"
Apr 18 33° 63° 15° (1945) 82° (1946) 0.05" 0"
Apr 19 33° 63° 10° (1951) 87° (1962) 0.06" 0.1"
Apr 20 33° 64° 16° (1966) 91° (1980) 0.05" 0"
Apr 21 34° 64° 9° (2008) 85° (1980) 0.06" 0"
Apr 22 34° 64° 16° (1951) 82° (2009) 0.05" 0"
Apr 23 34° 65° 11° (1931) 88° (1943) 0.06" 0"
Apr 24 34° 65° 19° (1931) 85° (1962) 0.05" 0"
Apr 25 35° 65° 9° (1960) 87° (1952) 0.06" 0"
Apr 26 35° 66° 19° (1960) 88° (1946) 0.06" 0"
Apr 27 35° 66° 18° (1950) 88° (1952) 0.05" 0.1"
Apr 28 36° 67° 17° (1954) 89° (1952) 0.06" 0"
Apr 29 36° 67° 19° (1954) 87° (1915) 0.05" 0"
Apr 30 36° 67° 10° (1950) 86° (1968) 0.06" 0"
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