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
Jul 1 53° 86° 39° (1963) 99° (1937) 0.07" 0"
Jul 2 53° 86° 36° (1955) 98° (1985) 0.07" 0"
Jul 3 54° 86° 42° (1921) 101° (1961) 0.07" 0"
Jul 4 54° 87° 37° (1972) 102° (1937) 0.06" 0"
Jul 5 54° 87° 41° (1915) 105° (1937) 0.07" 0"
Jul 6 54° 87° 40° (1934) 108° (2007) 0.07" 0"
Jul 7 54° 88° 41° (1971) 106° (2007) 0.07" 0"
Jul 8 55° 88° 42° (1931) 106° (2002) 0.06" 0"
Jul 9 55° 88° 42° (1981) 105° (2002) 0.07" 0"
Jul 10 55° 89° 44° (1999) 106° (1934) 0.07" 0"
Jul 11 55° 89° 40° (1951) 104° (1973) 0.07" 0"
Jul 12 55° 89° 41° (2008) 109° (2002) 0.07" 0"
Jul 13 55° 90° 43° (1963) 110° (2002) 0.06" 0"
Jul 14 56° 90° 43° (1977) 111° (2002) 0.07" 0"
Jul 15 56° 90° 42° (1963) 111° (2002) 0.06" 0"
Jul 16 56° 90° 43° (1999) 106° (1966) 0.07" 0"
Jul 17 56° 90° 41° (1982) 104° (2003) 0.06" 0"
Jul 18 56° 91° 43° (1950) 105° (1955) 0.06" 0"
Jul 19 56° 91° 42° (1919) 105° (1960) 0.06" 0"
Jul 20 56° 91° 42° (1933) 104° (1960) 0.06" 0"
Jul 21 56° 91° 44° (1942) 106° (1931) 0.05" 0"
Jul 22 57° 91° 45° (1990) 104° (1940) 0.06" 0"
Jul 23 57° 91° 43° (1963) 109° (1980) 0.05" 0"
Jul 24 57° 91° 45° (2004) 106° (2003) 0.06" 0"
Jul 25 57° 91° 43° (1948) 106° (1933) 0.05" 0"
Jul 26 57° 92° 42° (1971) 105° (1931) 0.05" 0"
Jul 27 57° 92° 39° (1921) 107° (1933) 0.05" 0"
Jul 28 57° 92° 40° (1921) 105° (1935) 0.05" 0"
Jul 29 57° 92° 39° (1921) 102° (1933) 0.04" 0"
Jul 30 57° 92° 40° (1921) 105° (2007) 0.05" 0"
Jul 31 57° 92° 40° (1921) 106° (1943) 0.05" 0"
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