Lewistown, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 32° -46° (1929) 73° (1981) 0.89" 11.1"
February 15° 36° -42° (1936) 70° (1932) 0.57" 6.4"
March 21° 43° -28° (1945) 88° (1902) 1.16" 11.6"
April 29° 53° -17° (1936) 89° (1939) 1.38" 8.1"
May 38° 63° 11° (1946) 98° (1931) 2.92" 4.7"
June 45° 72° 21° (1914) 105° (1900) 2.93" 0"
July 50° 79° 27° (1903) 105° (1900) 2.1" 0"
August 49° 80° 27° (1910) 103° (1961) 1.89" 0"
September 40° 69° 6° (1926) 99° (1909) 1.38" 1.3"
October 31° 57° -10° (1935) 92° (1905) 1.06" 4.5"
November 20° 42° -30° (1985) 81° (1908) 0.74" 7.2"
December 13° 34° -42° (1983) 74° (1939) 0.83" 9.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 15° 37° -27° (1985) 66° (1988) 0.02" NA
Dec 2 15° 37° -27° (1919) 62° (1907) 0.02" NA
Dec 3 15° 36° -22° (1972) 66° (1907) 0.02" NA
Dec 4 15° 36° -26° (1928) 71° (1907) 0.02" NA
Dec 5 14° 36° -22° (1972) 74° (1939) 0.02" NA
Dec 6 14° 36° -26° (1972) 64° (1939) 0.02" NA
Dec 7 14° 36° -32° (1972) 64° (1939) 0.02" NA
Dec 8 14° 35° -32° (1972) 66° (1930) 0.02" NA
Dec 9 14° 35° -36° (1919) 65° (1915) 0.02" NA
Dec 10 13° 35° -22° (1961) 64° (1990) 0.02" NA
Dec 11 13° 35° -28° (1932) 64° (1939) 0.03" NA
Dec 12 13° 35° -23° (1922) 60° (1924) 0.03" NA
Dec 13 13° 35° -22° (1963) 65° (1960) 0.03" NA
Dec 14 13° 34° -23° (1922) 60° (1924) 0.03" NA
Dec 15 13° 34° -29° (1964) 62° (1962) 0.03" NA
Dec 16 12° 34° -31° (1964) 61° (1980) 0.03" NA
Dec 17 12° 34° -30° (1924) 65° (1925) 0.03" NA
Dec 18 12° 34° -37° (1924) 62° (1979) 0.03" NA
Dec 19 12° 34° -27° (1924) 61° (2004) 0.03" NA
Dec 20 12° 33° -28° (1990) 60° (1900) 0.03" NA
Dec 21 12° 33° -34° (1990) 60° (1900) 0.03" NA
Dec 22 12° 33° -32° (1990) 58° (1994) 0.03" NA
Dec 23 11° 33° -37° (1983) 60° (1994) 0.03" NA
Dec 24 11° 33° -42° (1983) 55° (1994) 0.03" NA
Dec 25 11° 33° -30° (1983) 53° (1995) 0.03" NA
Dec 26 11° 33° -22° (1904) 56° (1972) 0.03" NA
Dec 27 11° 33° -32° (1916) 60° (1980) 0.03" NA
Dec 28 11° 32° -37° (1968) 56° (1919) 0.03" NA
Dec 29 11° 32° -41° (1968) 55° (1986) 0.03" NA
Dec 30 11° 32° -34° (1978) 58° (1904) 0.03" NA
Dec 31 11° 32° -40° (1927) 61° (1926) 0.03" NA
Advertisements
Track Severe Weather on mobile