Chinook, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -50° (1954) 67° (1984) 0.54" NA
February 34° -44° (1994) 75° (1995) 0.32" NA
March 17° 45° -36° (1960) 82° (2004) 0.56" NA
April 30° 59° -10° (1986) 92° (1980) 0.99" NA
May 41° 69° 11° (1954) 96° (1980) 2.29" NA
June 50° 78° 28° (1979) 104° (1988) 2.29" NA
July 53° 84° 36° (1987) 105° (1960) 1.66" NA
August 51° 84° 29° (1988) 109° (1961) 1.34" NA
September 39° 72° 13° (1995) 104° (1998) 1.43" NA
October 27° 59° -24° (1991) 90° (1992) 0.66" NA
November 13° 40° -38° (1985) 79° (1999) 0.47" NA
December 30° -50° (1989) 66° (1998) 0.51" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 45° 78° 30° (1988) 96° (1960) 0.05" NA
Sep 2 45° 78° 30° (1974) 95° (1955) 0.05" NA
Sep 3 44° 77° 32° (1962) 98° (1998) 0.05" NA
Sep 4 44° 77° 30° (1962) 104° (1998) 0.05" NA
Sep 5 43° 77° 28° (1956) 99° (1967) 0.05" NA
Sep 6 43° 76° 31° (1983) 96° (1988) 0.05" NA
Sep 7 42° 76° 30° (1960) 97° (1957) 0.05" NA
Sep 8 42° 75° 31° (1960) 95° (1981) 0.05" NA
Sep 9 41° 75° 27° (1962) 93° (1998) 0.05" NA
Sep 10 41° 74° 25° (1955) 94° (1998) 0.05" NA
Sep 11 40° 74° 18° (1989) 93° (1958) 0.05" NA
Sep 12 40° 73° 23° (1989) 93° (1958) 0.05" NA
Sep 13 39° 73° 21° (1949) 92° (1948) 0.05" NA
Sep 14 39° 72° 28° (1984) 92° (1948) 0.05" NA
Sep 15 39° 72° 26° (1970) 91° (1948) 0.05" NA
Sep 16 38° 72° 26° (1973) 91° (1998) 0.05" NA
Sep 17 38° 71° 28° (1973) 93° (1998) 0.05" NA
Sep 18 37° 71° 19° (1991) 94° (1966) 0.05" NA
Sep 19 37° 70° 24° (1957) 92° (1981) 0.05" NA
Sep 20 36° 70° 21° (1983) 88° (1960) 0.05" NA
Sep 21 36° 70° 13° (1995) 85° (1966) 0.05" NA
Sep 22 36° 69° 22° (1990) 88° (1966) 0.05" NA
Sep 23 35° 69° 20° (1965) 94° (1992) 0.05" NA
Sep 24 35° 69° 21° (1984) 89° (1994) 0.04" NA
Sep 25 35° 68° 22° (1984) 91° (1952) 0.04" NA
Sep 26 34° 68° 21° (1984) 95° (2001) 0.04" NA
Sep 27 34° 68° 16° (1961) 90° (1962) 0.04" NA
Sep 28 34° 67° 15° (1984) 92° (1967) 0.04" NA
Sep 29 33° 67° 15° (1984) 89° (1967) 0.04" NA
Sep 30 33° 67° 18° (1985) 92° (1963) 0.04" NA
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