Grantsdale, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 34° -36° (1937) 63° (1989) 1.11" NA
February 20° 41° -39° (1899) 71° (1995) 0.86" NA
March 26° 50° -14° (1955) 82° (1941) 0.91" NA
April 32° 58° 1° (1936) 90° (1936) 1.05" NA
May 39° 66° 0° (1901) 102° (1936) 1.75" NA
June 45° 74° 24° (1924) 100° (1933) 1.62" NA
July 49° 83° 31° (1971) 105° (1895) 1" NA
August 48° 82° 19° (1895) 103° (1969) 1.14" NA
September 40° 71° 10° (1895) 98° (1998) 1.07" NA
October 31° 59° -1° (1935) 90° (1901) 0.78" NA
November 23° 42° -24° (1955) 76° (1999) 1.11" NA
December 17° 34° -31° (1972) 66° (1957) 1.14" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 36° 62° 21° (1954) 83° (2000) 0.05" NA
May 2 36° 63° 22° (1954) 85° (1985) 0.05" NA
May 3 36° 63° 25° (1907) 88° (1903) 0.05" NA
May 4 36° 63° 26° (1922) 86° (1966) 0.05" NA
May 5 37° 63° 22° (1981) 86° (1966) 0.05" NA
May 6 37° 64° 18° (1903) 86° (1992) 0.05" NA
May 7 37° 64° 27° (1922) 86° (1987) 0.05" NA
May 8 37° 64° 23° (1999) 89° (1901) 0.05" NA
May 9 38° 64° 24° (1933) 85° (1994) 0.05" NA
May 10 38° 65° 21° (1946) 89° (1940) 0.05" NA
May 11 38° 65° 25° (1973) 89° (1993) 0.05" NA
May 12 38° 65° 24° (1985) 90° (1993) 0.06" NA
May 13 39° 66° 25° (1953) 92° (1931) 0.06" NA
May 14 39° 66° 0° (1901) 90° (1931) 0.06" NA
May 15 39° 66° 27° (1986) 99° (1934) 0.06" NA
May 16 39° 66° 26° (1974) 88° (1988) 0.06" NA
May 17 40° 67° 27° (1974) 86° (2007) 0.06" NA
May 18 40° 67° 28° (1965) 88° (1901) 0.06" NA
May 19 40° 67° 26° (1974) 89° (1954) 0.06" NA
May 20 40° 67° 30° (1903) 89° (1958) 0.06" NA
May 21 40° 68° 28° (1931) 89° (1919) 0.06" NA
May 22 41° 68° 25° (1960) 90° (1919) 0.06" NA
May 23 41° 68° 27° (1930) 90° (2001) 0.06" NA
May 24 41° 68° 30° (1975) 93° (2001) 0.06" NA
May 25 41° 69° 28° (1904) 91° (1928) 0.06" NA
May 26 41° 69° 27° (1930) 94° (1936) 0.06" NA
May 27 42° 69° 28° (1973) 95° (1936) 0.06" NA
May 28 42° 69° 27° (1922) 92° (1919) 0.06" NA
May 29 42° 70° 29° (1951) 93° (1936) 0.06" NA
May 30 42° 70° 30° (1979) 102° (1936) 0.06" NA
May 31 42° 70° 25° (1917) 94° (1986) 0.06" NA
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