Keystone, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -28° (1996) 65° (1989) 1.05" 6.4"
February 14° 33° -35° (1996) 70° (2000) 1.08" 7.5"
March 26° 46° -23° (1962) 88° (1986) 2.28" 5.7"
April 37° 60° 8° (1982) 95° (1986) 3.63" 2.1"
May 49° 71° 22° (2005) 94° (1956) 4.16" 0"
June 59° 81° 38° (1993) 102° (1988) 4.68" 0"
July 63° 84° 43° (1972) 105° (1955) 4.29" 0"
August 61° 82° 36° (1950) 105° (1988) 4.71" 0"
September 51° 75° 26° (1984) 100° (1955) 3.49" 0"
October 39° 63° 11° (1997) 93° (1963) 2.7" 0.2"
November 26° 45° -10° (1977) 80° (1999) 2.35" 2.2"
December 14° 31° -30° (1985) 69° (1998) 1.39" 7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 19° 39° -23° (1962) 72° (1992) 0.05" NA
Mar 2 20° 39° -7° (1962) 70° (1964) 0.05" NA
Mar 3 20° 40° 0° (1996) 73° (1983) 0.05" NA
Mar 4 21° 40° -11° (2002) 67° (1983) 0.05" NA
Mar 5 21° 41° -15° (1960) 69° (2000) 0.06" NA
Mar 6 21° 41° -13° (1960) 70° (2000) 0.06" NA
Mar 7 22° 42° -6° (1960) 74° (1987) 0.06" NA
Mar 8 22° 42° -5° (1996) 80° (2000) 0.06" NA
Mar 9 23° 43° -5° (1996) 75° (2000) 0.06" NA
Mar 10 23° 43° -3° (1984) 70° (1955) 0.06" NA
Mar 11 24° 44° 0° (1969) 76° (1972) 0.06" NA
Mar 12 24° 44° -7° (1998) 77° (1990) 0.07" NA
Mar 13 24° 44° -8° (1998) 70° (1957) 0.07" NA
Mar 14 25° 45° -5° (1960) 75° (2007) 0.07" NA
Mar 15 25° 45° 1° (1993) 73° (1995) 0.07" NA
Mar 16 26° 46° 4° (1951) 72° (1966) 0.07" NA
Mar 17 26° 46° 5° (1949) 76° (1966) 0.07" NA
Mar 18 27° 47° 6° (1965) 75° (2003) 0.08" NA
Mar 19 27° 47° 4° (1965) 76° (1976) 0.08" NA
Mar 20 27° 48° 5° (1951) 71° (1972) 0.08" NA
Mar 21 28° 48° 0° (1951) 73° (1953) 0.08" NA
Mar 22 28° 49° 12° (1955) 81° (1988) 0.08" NA
Mar 23 29° 49° 5° (1974) 76° (1994) 0.09" NA
Mar 24 29° 50° -2° (1974) 80° (1967) 0.09" NA
Mar 25 29° 50° 3° (1960) 73° (1986) 0.09" NA
Mar 26 30° 51° 5° (1955) 83° (1991) 0.09" NA
Mar 27 30° 51° 7° (1964) 81° (2007) 0.09" NA
Mar 28 30° 52° 8° (1970) 81° (1968) 0.09" NA
Mar 29 31° 52° 6° (1969) 88° (1986) 0.1" NA
Mar 30 31° 52° 6° (1969) 81° (1967) 0.1" NA
Mar 31 32° 53° 10° (1969) 81° (1986) 0.1" NA
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