Onawa, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 31° -32° (1912) 69° (1944) 0.63" 7.2"
February 17° 37° -30° (1905) 71° (1987) 0.67" 6.9"
March 27° 50° -23° (1960) 91° (1986) 2.11" 7.6"
April 38° 64° 4° (1975) 97° (1910) 3.1" 1.4"
May 50° 74° 23° (1967) 106° (1934) 4.12" 0"
June 59° 84° 36° (1935) 106° (1946) 4.36" 0"
July 63° 87° 38° (1921) 110° (1936) 3.98" 0"
August 61° 85° 24° (1936) 108° (1936) 3.42" 0"
September 52° 78° 23° (1942) 104° (1939) 2.94" 0"
October 40° 66° -1° (1925) 97° (1938) 2.33" 0.6"
November 26° 47° -15° (1937) 82° (2006) 1.59" 2.8"
December 14° 33° -27° (1989) 70° (1998) 0.83" 7.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 21° 43° -16° (1962) 77° (1992) 0.04" NA
Mar 2 22° 43° -10° (1913) 75° (1974) 0.04" NA
Mar 3 22° 43° -6° (2002) 79° (1905) 0.05" NA
Mar 4 22° 44° -20° (1960) 73° (1987) 0.05" NA
Mar 5 23° 44° -23° (1960) 74° (2000) 0.05" NA
Mar 6 23° 45° -10° (1962) 77° (1987) 0.05" NA
Mar 7 24° 45° -13° (1943) 77° (2000) 0.05" NA
Mar 8 24° 46° -8° (1995) 76° (1977) 0.06" NA
Mar 9 24° 46° -2° (1982) 72° (1986) 0.06" NA
Mar 10 25° 47° -6° (1948) 76° (1967) 0.06" NA
Mar 11 25° 47° -21° (1948) 70° (1967) 0.06" NA
Mar 12 25° 48° -12° (1998) 78° (1910) 0.06" NA
Mar 13 26° 48° -3° (1975) 72° (1914) 0.06" NA
Mar 14 26° 49° -7° (1960) 76° (2007) 0.07" NA
Mar 15 26° 49° -5° (1912) 80° (1935) 0.07" NA
Mar 16 27° 50° -6° (1900) 80° (1930) 0.07" NA
Mar 17 27° 50° 0° (1902) 78° (1930) 0.07" NA
Mar 18 28° 51° -10° (1923) 77° (1968) 0.07" NA
Mar 19 28° 51° -8° (1923) 80° (1910) 0.07" NA
Mar 20 28° 52° -2° (1951) 75° (1911) 0.08" NA
Mar 21 29° 52° -5° (1951) 85° (1907) 0.08" NA
Mar 22 29° 53° -2° (1955) 83° (1939) 0.08" NA
Mar 23 29° 53° 3° (1965) 87° (1910) 0.08" NA
Mar 24 30° 54° -2° (1952) 87° (1967) 0.08" NA
Mar 25 30° 54° 3° (1952) 84° (1907) 0.08" NA
Mar 26 30° 55° -2° (1965) 88° (1907) 0.08" NA
Mar 27 31° 55° 2° (1955) 84° (1905) 0.08" NA
Mar 28 31° 55° 10° (1926) 88° (1986) 0.09" NA
Mar 29 32° 56° 5° (1969) 91° (1986) 0.09" NA
Mar 30 32° 57° 5° (1987) 87° (1968) 0.09" NA
Mar 31 32° 57° 5° (1924) 89° (1978) 0.09" NA
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