Apostle Islands National Lak, Wisconsin
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 21° -33° (1951) 53° (1973) 1.78" 24.9"
February 27° -34° (1996) 61° (1984) 0.97" 10.3"
March 18° 37° -17° (1989) 78° (1986) 2.2" 13"
April 30° 50° 2° (1995) 89° (1952) 2.25" 4.6"
May 40° 64° 17° (2004) 95° (1969) 3.18" 0.3"
June 49° 72° 22° (1984) 98° (1961) 3.84" 0"
July 56° 77° 36° (1972) 101° (1988) 4.06" 0"
August 55° 75° 34° (1962) 99° (1961) 3.99" 0"
September 46° 66° 27° (1967) 99° (1976) 3.78" 0"
October 36° 54° 15° (1988) 88° (1963) 2.82" 0.5"
November 24° 38° -6° (1958) 76° (1978) 2.86" 11.8"
December 11° 26° -24° (1996) 61° (1982) 1.73" 22.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 51° 71° 35° (1974) 92° (1961) 0.13" NA
Sep 2 51° 71° 39° (1976) 93° (1983) 0.13" NA
Sep 3 51° 70° 40° (1974) 91° (1960) 0.13" NA
Sep 4 50° 70° 39° (1961) 89° (1948) 0.13" NA
Sep 5 50° 70° 39° (1962) 88° (1948) 0.14" NA
Sep 6 49° 69° 41° (1965) 91° (1960) 0.14" NA
Sep 7 49° 69° 39° (1986) 99° (1976) 0.13" NA
Sep 8 49° 69° 34° (1995) 93° (1976) 0.13" NA
Sep 9 48° 68° 32° (1975) 93° (1961) 0.13" NA
Sep 10 48° 68° 33° (1967) 87° (1961) 0.13" NA
Sep 11 48° 68° 33° (1965) 88° (1976) 0.13" NA
Sep 12 47° 67° 35° (1955) 93° (1948) 0.13" NA
Sep 13 47° 67° 29° (1963) 84° (1952) 0.13" NA
Sep 14 47° 66° 33° (1970) 84° (1990) 0.13" NA
Sep 15 46° 66° 29° (1964) 82° (1997) 0.13" NA
Sep 16 46° 66° 35° (1986) 94° (1948) 0.13" NA
Sep 17 46° 65° 28° (1959) 90° (1948) 0.13" NA
Sep 18 45° 65° 37° (1991) 87° (1955) 0.13" NA
Sep 19 45° 65° 35° (1971) 86° (1985) 0.13" NA
Sep 20 45° 64° 29° (1973) 83° (1969) 0.13" NA
Sep 21 44° 64° 32° (1956) 79° (1970) 0.12" NA
Sep 22 44° 64° 31° (1972) 79° (1958) 0.12" NA
Sep 23 44° 63° 29° (1995) 84° (1958) 0.12" NA
Sep 24 44° 63° 28° (1976) 78° (1958) 0.12" NA
Sep 25 43° 63° 32° (1975) 83° (1950) 0.12" NA
Sep 26 43° 62° 29° (1965) 77° (1950) 0.12" NA
Sep 27 43° 62° 27° (1965) 84° (1979) 0.11" NA
Sep 28 42° 62° 30° (1964) 84° (1987) 0.11" NA
Sep 29 42° 62° 27° (1967) 77° (1989) 0.11" NA
Sep 30 42° 61° 31° (1993) 81° (1976) 0.11" NA
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