Grand Portage, Minnesota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -1° 21° -39° (1996) 50° (2006) 1.43" NA
February 26° -43° (1996) 55° (1991) 0.91" NA
March 13° 35° -25° (1989) 65° (2007) 1.53" NA
April 26° 47° -4° (1995) 82° (1965) 2.56" NA
May 36° 59° 18° (1967) 88° (1977) 3.06" NA
June 45° 68° 28° (1998) 95° (1995) 3.53" NA
July 51° 74° 38° (1968) 94° (2006) 3.61" NA
August 51° 74° 34° (1976) 94° (2001) 3.5" NA
September 43° 64° 24° (1965) 86° (1978) 3.49" NA
October 33° 52° 13° (1976) 78° (2003) 3.4" NA
November 21° 38° -17° (1976) 71° (1999) 2.45" NA
December 25° -28° (1967) 52° (1962) 1.75" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 31° 53° 23° (1966) 77° (1998) 0.1" NA
May 2 32° 54° 23° (1966) 74° (1992) 0.1" NA
May 3 32° 54° 18° (1967) 71° (2001) 0.1" NA
May 4 32° 54° 25° (2004) 70° (1999) 0.1" NA
May 5 33° 55° 24° (1967) 72° (1999) 0.1" NA
May 6 33° 55° 22° (1989) 74° (2000) 0.09" NA
May 7 33° 56° 23° (1966) 82° (2000) 0.1" NA
May 8 34° 56° 26° (1966) 75° (1992) 0.1" NA
May 9 34° 56° 22° (1966) 82° (2007) 0.09" NA
May 10 34° 57° 24° (1966) 73° (1993) 0.1" NA
May 11 35° 57° 28° (1963) 84° (1993) 0.1" NA
May 12 35° 57° 24° (2005) 88° (1977) 0.09" NA
May 13 35° 58° 26° (2005) 86° (1977) 0.1" NA
May 14 36° 58° 26° (2005) 73° (2003) 0.1" NA
May 15 36° 59° 27° (2002) 83° (1991) 0.09" NA
May 16 36° 59° 27° (1961) 74° (1991) 0.1" NA
May 17 37° 59° 25° (2002) 76° (2001) 0.1" NA
May 18 37° 60° 24° (2002) 76° (1977) 0.09" NA
May 19 37° 60° 28° (2002) 79° (1996) 0.11" NA
May 20 38° 60° 24° (2007) 82° (1998) 0.1" NA
May 21 38° 61° 28° (2002) 83° (2009) 0.1" NA
May 22 38° 61° 26° (1967) 76° (1964) 0.1" NA
May 23 38° 61° 28° (1963) 71° (1977) 0.1" NA
May 24 39° 62° 30° (1963) 84° (1961) 0.1" NA
May 25 39° 62° 27° (1969) 81° (1966) 0.1" NA
May 26 39° 62° 29° (1969) 79° (1966) 0.1" NA
May 27 40° 63° 28° (1994) 79° (2010) 0.1" NA
May 28 40° 63° 29° (2008) 78° (2003) 0.1" NA
May 29 40° 63° 31° (1964) 81° (1969) 0.1" NA
May 30 41° 63° 30° (1996) 86° (1999) 0.1" NA
May 31 41° 64° 29° (2009) 84° (2006) 0.1" NA
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