Rock Valley, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -30° (1972) 68° (2002) 0.75" 6.6"
February 14° 35° -27° (1994) 68° (1981) 0.75" 5.4"
March 25° 47° -19° (1960) 87° (1968) 1.97" 6.8"
April 36° 63° -1° (1975) 95° (2007) 3.14" 2.9"
May 48° 75° 17° (1967) 104° (1967) 3.43" 0.3"
June 58° 83° 33° (1989) 105° (1988) 4.45" 0"
July 62° 86° 38° (1972) 103° (1988) 3.77" 0"
August 60° 83° 37° (1986) 101° (1988) 3.48" 0"
September 51° 77° 21° (1984) 102° (1976) 3.27" 0"
October 38° 64° 9° (1972) 92° (2006) 2.37" 1"
November 25° 45° -20° (1959) 79° (1999) 1.54" 4.6"
December 12° 31° -29° (1989) 66° (1998) 0.94" 7.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 19° 40° -16° (1962) 69° (1992) 0.04" 0.2"
Mar 2 20° 40° -5° (1972) 74° (1974) 0.04" 0.3"
Mar 3 20° 40° -6° (1996) 73° (1974) 0.04" 0.2"
Mar 4 21° 41° -18° (1960) 73° (2000) 0.05" 0.2"
Mar 5 21° 41° -19° (1960) 72° (2000) 0.04" 0.3"
Mar 6 21° 42° -13° (1962) 75° (2000) 0.04" 0.2"
Mar 7 22° 42° -11° (1996) 77° (2000) 0.05" 0.2"
Mar 8 22° 43° -14° (1995) 73° (2000) 0.05" 0.3"
Mar 9 23° 43° -10° (1984) 62° (1967) 0.05" 0.2"
Mar 10 23° 44° -7° (1979) 70° (1967) 0.05" 0.2"
Mar 11 23° 44° -8° (1984) 66° (1990) 0.05" 0.3"
Mar 12 24° 45° -12° (1998) 67° (1990) 0.06" 0.2"
Mar 13 24° 45° -15° (1975) 69° (1996) 0.05" 0.2"
Mar 14 24° 46° -8° (1975) 69° (1996) 0.07" 0.3"
Mar 15 25° 46° -6° (1979) 72° (1966) 0.06" 0.2"
Mar 16 25° 47° -5° (1962) 77° (1966) 0.06" 0.3"
Mar 17 26° 47° -5° (1962) 70° (1966) 0.07" 0.2"
Mar 18 26° 48° -4° (1965) 75° (1968) 0.07" 0.2"
Mar 19 26° 48° -3° (1965) 73° (1976) 0.07" 0.2"
Mar 20 27° 49° 0° (1965) 70° (1976) 0.07" 0.2"
Mar 21 27° 49° 0° (1964) 66° (1990) 0.07" 0.2"
Mar 22 27° 50° 5° (1960) 78° (1988) 0.08" 0.2"
Mar 23 28° 51° -2° (1974) 76° (2003) 0.07" 0.2"
Mar 24 28° 51° -6° (1974) 82° (1967) 0.07" 0.2"
Mar 25 28° 52° 5° (1964) 78° (2004) 0.08" 0.2"
Mar 26 29° 52° -2° (1965) 79° (1968) 0.08" 0.3"
Mar 27 29° 53° 7° (1965) 78° (1963) 0.08" 0.1"
Mar 28 29° 53° 4° (1970) 76° (1986) 0.08" 0.2"
Mar 29 30° 54° -1° (1969) 83° (1986) 0.09" 0.2"
Mar 30 30° 55° -1° (1969) 87° (1968) 0.1" 0.2"
Mar 31 30° 55° 12° (1969) 86° (1968) 0.09" 0.2"
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