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
Dec 1 19° 36° -10° (1931) 58° (1958) 0.04" NA
Dec 2 19° 36° -11° (1931) 57° (1958) 0.04" NA
Dec 3 19° 36° -4° (1931) 62° (1956) 0.04" NA
Dec 4 19° 36° -20° (1972) 60° (1965) 0.04" NA
Dec 5 18° 35° -24° (1972) 56° (2007) 0.04" NA
Dec 6 18° 35° -18° (1972) 62° (1939) 0.04" NA
Dec 7 18° 35° -10° (1972) 57° (1962) 0.04" NA
Dec 8 18° 35° -27° (1972) 59° (1938) 0.04" NA
Dec 9 18° 35° -31° (1972) 66° (1957) 0.04" NA
Dec 10 17° 35° -28° (1972) 63° (1939) 0.04" NA
Dec 11 17° 34° -22° (1932) 60° (1980) 0.04" NA
Dec 12 17° 34° -14° (1932) 66° (1921) 0.04" NA
Dec 13 17° 34° -15° (1932) 64° (1921) 0.04" NA
Dec 14 17° 34° -15° (1932) 57° (1929) 0.04" NA
Dec 15 17° 34° -17° (1932) 64° (1980) 0.04" NA
Dec 16 16° 34° -21° (1964) 62° (1980) 0.04" NA
Dec 17 16° 34° -31° (1964) 62° (1980) 0.04" NA
Dec 18 16° 33° -21° (1964) 55° (1966) 0.04" NA
Dec 19 16° 33° -16° (1998) 57° (1966) 0.03" NA
Dec 20 16° 33° -23° (1990) 57° (1950) 0.03" NA
Dec 21 16° 33° -23° (1983) 57° (1933) 0.03" NA
Dec 22 16° 33° -27° (1983) 57° (1933) 0.03" NA
Dec 23 16° 33° -30° (1983) 54° (1950) 0.03" NA
Dec 24 16° 33° -28° (1983) 56° (1919) 0.03" NA
Dec 25 16° 33° -21° (1944) 55° (1919) 0.03" NA
Dec 26 16° 33° -19° (1951) 60° (1980) 0.03" NA
Dec 27 16° 33° -20° (1916) 61° (1980) 0.03" NA
Dec 28 16° 33° -16° (1983) 53° (1965) 0.03" NA
Dec 29 16° 33° -27° (1990) 62° (1917) 0.04" NA
Dec 30 16° 33° -27° (1978) 59° (1962) 0.04" NA
Dec 31 16° 33° -26° (1978) 58° (1917) 0.04" NA
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