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
May 1 36° 65° 18° (2002) 86° (1987) 0.06" NA
May 2 36° 65° 11° (1954) 88° (2000) 0.06" NA
May 3 36° 65° 17° (2005) 85° (1957) 0.06" NA
May 4 37° 65° 17° (2005) 88° (1998) 0.06" NA
May 5 37° 66° 19° (1984) 91° (1992) 0.06" NA
May 6 37° 66° 23° (1977) 92° (1992) 0.06" NA
May 7 38° 66° 27° (1984) 88° (1953) 0.07" NA
May 8 38° 67° 27° (2002) 89° (1987) 0.07" NA
May 9 38° 67° 24° (1968) 88° (1987) 0.07" NA
May 10 39° 67° 24° (1968) 89° (1977) 0.07" NA
May 11 39° 68° 20° (1983) 91° (1958) 0.07" NA
May 12 39° 68° 25° (1973) 90° (1993) 0.07" NA
May 13 40° 68° 22° (2004) 90° (1993) 0.07" NA
May 14 40° 69° 23° (2004) 86° (1984) 0.08" NA
May 15 40° 69° 30° (2002) 88° (1984) 0.08" NA
May 16 41° 69° 28° (1986) 87° (1997) 0.08" NA
May 17 41° 69° 29° (2002) 87° (1972) 0.08" NA
May 18 41° 70° 28° (1971) 89° (2006) 0.08" NA
May 19 42° 70° 28° (1968) 91° (1992) 0.08" NA
May 20 42° 70° 28° (1979) 94° (2006) 0.08" NA
May 21 43° 71° 29° (1965) 96° (1980) 0.08" NA
May 22 43° 71° 27° (1992) 95° (1980) 0.08" NA
May 23 43° 71° 28° (2002) 90° (1985) 0.08" NA
May 24 44° 71° 31° (1954) 94° (2006) 0.08" NA
May 25 44° 72° 30° (2002) 91° (1958) 0.08" NA
May 26 44° 72° 28° (1964) 93° (1966) 0.08" NA
May 27 45° 72° 31° (1995) 96° (1966) 0.08" NA
May 28 45° 73° 32° (1982) 93° (1966) 0.08" NA
May 29 45° 73° 31° (1951) 92° (1961) 0.08" NA
May 30 46° 73° 32° (1979) 92° (1986) 0.08" NA
May 31 46° 74° 26° (1982) 92° (1972) 0.08" NA
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