Hays, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 31° -41° (1969) 65° (1968) 0.74" NA
February 12° 36° -32° (1989) 67° (1988) 0.5" NA
March 20° 44° -33° (1960) 72° (1966) 1.16" NA
April 30° 56° -9° (1967) 88° (1980) 1.6" NA
May 39° 66° 11° (1967) 90° (1972) 2.72" NA
June 46° 75° 28° (1983) 99° (1988) 2.6" NA
July 50° 81° 34° (1982) 100° (1963) 1.69" NA
August 49° 80° 32° (1988) 107° (1961) 1.14" NA
September 40° 70° 16° (1957) 95° (1988) 1.42" NA
October 31° 59° -14° (1984) 86° (1987) 0.93" NA
November 18° 42° -31° (1985) 78° (1975) 0.86" NA
December 10° 34° -38° (1972) 65° (1980) 0.76" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 13° 36° -24° (1985) 60° (1969) 0.03" NA
Dec 2 13° 36° -30° (1985) 61° (1959) 0.03" NA
Dec 3 13° 36° -20° (1972) 58° (1975) 0.03" NA
Dec 4 12° 36° -29° (1972) 61° (1987) 0.03" NA
Dec 5 12° 36° -15° (1972) 59° (1987) 0.03" NA
Dec 6 12° 35° -30° (1972) 60° (1965) 0.03" NA
Dec 7 12° 35° -31° (1972) 54° (1970) 0.03" NA
Dec 8 12° 35° -38° (1972) 58° (1957) 0.03" NA
Dec 9 11° 35° -34° (1977) 58° (1979) 0.03" NA
Dec 10 11° 35° -18° (1977) 57° (1979) 0.03" NA
Dec 11 11° 34° -19° (1963) 55° (1980) 0.03" NA
Dec 12 11° 34° -21° (1961) 60° (1962) 0.02" NA
Dec 13 11° 34° -20° (1972) 61° (1962) 0.02" NA
Dec 14 11° 34° -27° (1963) 56° (1962) 0.02" NA
Dec 15 10° 34° -29° (1964) 65° (1962) 0.02" NA
Dec 16 10° 33° -31° (1964) 65° (1980) 0.02" NA
Dec 17 10° 33° -35° (1964) 60° (1976) 0.02" NA
Dec 18 10° 33° -28° (1984) 61° (1979) 0.02" NA
Dec 19 10° 33° -19° (1961) 60° (1981) 0.02" NA
Dec 20 10° 33° -15° (1970) 52° (1958) 0.02" NA
Dec 21 10° 33° -23° (1967) 54° (1972) 0.02" NA
Dec 22 32° -22° (1967) 52° (1986) 0.02" NA
Dec 23 32° -14° (1962) 50° (1985) 0.02" NA
Dec 24 32° -25° (1980) 55° (1963) 0.02" NA
Dec 25 32° -21° (1964) 50° (1963) 0.02" NA
Dec 26 32° -18° (1965) 62° (1980) 0.02" NA
Dec 27 32° -23° (1965) 60° (1980) 0.02" NA
Dec 28 31° -30° (1968) 57° (1986) 0.02" NA
Dec 29 31° -36° (1968) 56° (1986) 0.03" NA
Dec 30 31° -31° (1984) 56° (1963) 0.03" NA
Dec 31 31° -30° (1967) 56° (1963) 0.03" NA
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