Garrison, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -29° (1974) 63° (2002) 1.03" 6.6"
February 15° 33° -30° (1996) 66° (2000) 1.01" 6.8"
March 26° 46° -34° (1962) 88° (1986) 2.09" 5.3"
April 37° 61° 4° (1982) 91° (1952) 3.38" 1.4"
May 49° 72° 22° (2005) 93° (1975) 4.08" 0"
June 58° 81° 36° (1993) 101° (1988) 4.52" 0"
July 62° 84° 44° (1981) 105° (1977) 3.95" 0"
August 60° 82° 36° (1950) 104° (1988) 4.31" 0"
September 51° 75° 23° (1984) 100° (1955) 3.66" 0"
October 40° 63° 10° (1952) 94° (1953) 2.53" 0"
November 27° 45° -10° (1977) 79° (1999) 2.35" 2.5"
December 15° 31° -27° (1985) 68° (1998) 1.33" 7.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 32° 54° 14° (1964) 85° (2003) 0.09" NA
Apr 2 33° 54° 18° (1962) 84° (1981) 0.1" NA
Apr 3 33° 55° 14° (1975) 81° (1981) 0.1" NA
Apr 4 33° 55° 9° (1975) 80° (1988) 0.1" NA
Apr 5 33° 56° 17° (1982) 82° (2000) 0.1" NA
Apr 6 34° 56° 4° (1982) 86° (1991) 0.1" NA
Apr 7 34° 57° 5° (1982) 80° (1991) 0.1" NA
Apr 8 35° 57° 13° (1972) 76° (1971) 0.11" NA
Apr 9 35° 58° 16° (1997) 78° (1977) 0.11" NA
Apr 10 35° 58° 17° (1960) 83° (1977) 0.11" NA
Apr 11 36° 59° 13° (1982) 84° (1968) 0.11" NA
Apr 12 36° 59° 18° (1950) 81° (1977) 0.11" NA
Apr 13 36° 60° 18° (1950) 85° (2006) 0.11" NA
Apr 14 37° 60° 21° (1950) 86° (2003) 0.11" NA
Apr 15 37° 61° 22° (1950) 87° (2002) 0.12" NA
Apr 16 37° 61° 19° (1949) 87° (1964) 0.12" NA
Apr 17 38° 62° 22° (1951) 85° (1958) 0.12" NA
Apr 18 38° 62° 22° (1953) 88° (1948) 0.12" NA
Apr 19 39° 62° 22° (1983) 85° (1994) 0.12" NA
Apr 20 39° 63° 24° (1956) 88° (1987) 0.12" NA
Apr 21 39° 63° 22° (1950) 87° (1987) 0.12" NA
Apr 22 40° 64° 22° (1986) 87° (1960) 0.12" NA
Apr 23 40° 64° 25° (1956) 86° (1960) 0.12" NA
Apr 24 40° 64° 20° (1956) 83° (1954) 0.12" NA
Apr 25 41° 65° 29° (1995) 89° (1949) 0.12" NA
Apr 26 41° 65° 29° (2002) 86° (1962) 0.12" NA
Apr 27 42° 65° 29° (1953) 88° (1981) 0.12" NA
Apr 28 42° 66° 26° (1950) 90° (1970) 0.12" NA
Apr 29 42° 66° 24° (1958) 91° (1952) 0.12" NA
Apr 30 43° 67° 26° (2005) 90° (1952) 0.12" NA
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